Reviews Tankless Water Heaters

Tankless Vs Tank Water Heater Reviews and Buying Guide

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When looking for a new water heater or a replacement for your current system, you need to assess your needs and decide whether to go for a tankless or tank water heater. The two types of heaters provide hot water but have differences in the way they work, cost, and other issues that you need to understand before making your decision. Ideally, you need to check the different systems and decide on whether a tankless or tank water heater is the right option to meet your family’s hot water needs.

The tank heaters usually heat and store the hot water in advance, even when no one is using it at that time. These are ideal for large families or spaces with high hot water demand. On the other hand, the tankless water heater is a compact, smaller capacity unit that heats water on demand. These are suitable for low-demand applications and small households.

Whether looking for a tankless or tank water heater, below are the main factors to consider.

  • Hot water demand/ capacity
  • Purchase price
  • Installation requirements and cost
  • Performance
  • Operating Costs 
  • Energy efficiency
  • Equipment service life

Tankless water heaters

The electric and gas tankless water heaters deliver hot water on demand and do not have a storage tank. These heaters have a wide range of sizes and different features but have limited capacities compared to storage-based systems. As such, the installation procedures and costs vary across different brands, models, energy source, size, outdoor or indoor, etc. For example, the installation of a gas tankless water heater differs from that of an electric model. 

Generally, the tankless water heaters are smaller in size than the tank systems and require less space inside or outside the house, depending on the model. Unlike the tank systems, the tankless water heaters have longer lifespans of over 20 years.

How a tankless water heater works

The tankless unit uses gas or electricity to heat the water instantly when there is a demand. Once a user opens a hot water outlet, the cold input flows through the electric heating element or gas heat exchanger pipes before reaching the sink, shower, or another faucet. However, since it heats the water as it passes through the system, the tankless water heaters have limited capacities. As such, unlike tank-based systems, the tankless supports only a few simultaneous outlets. If the demand for hot water is high, the system may not reach the preferred temperature. And the system will not provide a lot of hot water, fast enough, for everyone to enjoy. 

As the flow rate increase, the temperatures may reduce drastically; hence most models are unsuitable for large households or families. The capacity of a tankless is usually in terms of flow rate, which refers to the number of hot water gallons per minute that it produces.

A gas tankless water heater uses a flame to heat the water flowing through a heat exchanger unit, while an electric system uses a heating element. In practice, the gas tankless water heaters are faster and more energy-efficient. Also, they can work at any time, even when there is no electricity.

Benefits of tankless water heater

  • Higher energy efficiency since it does not need to maintain hot water in storage
  • Has a longer service life
  • Small physical size hence space saving
  • Most manufacturers offer longer warranties for the tankless water heaters

Disadvantages of the tankless water heaters

  • Costly to purchase and install
  • Some models require major changes to your home’s electrical or gas lines and components to support the systems.
  • Savings from higher energy efficiency may not be large enough to balance out the high purchase and installation cost.  
  • Limited capacity and unable to support large families unless you install multiple units.

Is a tankless water heater a good investment?

While tankless water heaters are not ideal for every application, they are good choices in various conditions. For instance, if you have a gas line in your home and can install the tankless with little effort and minimal changes, then a gas-powered tankless heater could be a good choice. Because of the high efficiency, the gas water heater will enable you to save money in the long term.

If you are looking for a hot water solution for low-demand applications such as a sink, or hand washing, you could go for a point of use tankless water heater. These are not only low capacity systems but also very small. The POUs can easily fit in small spaces such as under a sink and similar locations.

Further, you could also install the point of use (POU) water heater near the washing areas, a shower, or another applications area, hence reducing additional piping or modifications. Most often, the small tankless water heaters plugs in to the standard outlets. However, the larger systems may require dedicated gas lines or electrical circuits. Some tankless heaters are even portable, and you can use them in mobile homes, RVs, tiny homes, and similar spaces.

Best Tankless water heaters

The best tankless water heater may depend on your needs. For example, there is the best tankless water heater for RVs, the best electric tankless water heatersthe best gas tankless water heater, the best point of use tankless water heaters for low demand applications, etc. That said, below are some of the best tankless water heaters that we recommend.

EcoSmart ECO 27 Electric tankless water heater

EcoSmart ECO 27 is a compact, energy-efficient, and visually appealing tankless water heater suitable for households with limited utility space. Despite its small physical size, the tankless water heater provides 6 gallons per minute in warm weather and 4 GPM during winter.

The powerful water heater can support multiple showers or applications hence suitable for medium and large households. A digital control allows you to adjust the temperature of the hot water in one-degree steps. 

Rheem RTGH-95DVLN Natural Gas Tankless Water Heater

The Rheem RTGH 95DLN is a high-efficiency, indoor-only natural gas tankless water heater. It is a compact, 9.5 GPM, which is easy to install and maintain.

Rheem RTGH-95DVLN Natural Gas Tankless Water Heater

The tankless heater has inbuilt electronic controls that enable you to adjust the temperature, thus improving comfort, energy efficiency, and safety. Also, the low NOx emissions, condensing heater has a stainless steel heat exchanger and an energy efficiency of 94%. 

GASLAND BE158 Portable Propane Gas Tankless Water Heater

GASLAND BE158 is a portable and energy-efficient propane-powered outdoor tankless water heater. The compact and fast 1.58GPM heater is also lightweight hence easy to carry and install a wide range of outdoor spaces. 

Since it uses gas, you can install it anywhere, even in locations without electricity. Typical application areas include RVs, mobile homes, camping, and other outdoor places where there is a need for hot water.

Tank water heaters

The storage tank systems are the most common water heaters in many households and commercial spaces. A typical unit consists of an insulated tank that stores hot water and makes it available on demand. The heaters use electricity or gas to heat the water which they then store in the tank for immediate or later use. 

Installation procedures and costs of the tank water heaters vary according to size and other factors. However, they are usually easy to install equipment that can also fit is a wide range of indoor spaces including but not limited to a garage, a closet, and other free spaces.

Usually, the tank water heaters have a lifespan of between 10 and 15 years

How do the tank water heaters work

The storage-based water heaters have large hot water tanks with capacities that range between 20 to 80 gallons. In normal operations, the water heaters heat the water in the tanks, either using gas or electricity and then maintain the water at about 120 degrees F. 

When a user opens a tap or shower or any other hot water outlet, the water comes out of the tank. As the volume of hot water decreases, the heater will require some time to heat additional cold water. In this case, you need to wait for some time for the water to get hot.

On energy use, the natural gas tank water heaters are more efficient, hence cheaper to run than the electric counterparts, but are expensive to purchase. If you can get a cheap source for gas, a gas-powered model may be good for you. Additionally, the gas models will also work when there is no electricity.

Due to their large size, the tank water heaters require bigger indoor spaces, as they cannot withstand outdoor environments. 

Benefits of tank water heater

  • They are cheap to purchase and install
  • Easy installation procedure
  • You do not need to modify your electrical system nor add more components to install an electric water heater
  • It is a tried and proven technology

Disadvantages of tank water heater

The tank water heater has a lower energy efficiency because of the standby losses. The stored hot water often loses some heat, and the heater must keep on reheating the water to maintain it at a set temperature. Drawbacks of a tank water heater include

  • It has a short lifespan of between 10 and 15 years.
  • They have a long waiting time for the hot water. For example, if the tank is empty, it will take quite some time to heat the water and make it available.
  • High risk in case there is a malfunction such as a leakage which could result in spillage and damage to your house
  • The standby losses increase with the age of the water heater and are higher for older systems. Consequently, this increases the running heating energy costs.

Is a tank water heater good for you?

Since they are cheaper than other models, they could be a good choice when you have a small budget. Generally, tank systems are less costly than tankless or hybrid water heaters.

If your home does not have gas and runts entirely on electricity, a tank water heater may be the best option. For instance, if you have a standard electric service of about 200A and do not want to upgrade to accommodate an electric tankless water heater which requires more energy and a dedicated circuit. Despite the lower efficiency, the tank water heaters use the standard electrical circuits. 

Even if your home has a gas line, you need to consider the cost of additional plumbing and venting to support a tankless gas water heater. If the potential energy savings from a tankless are insignificant based on your needs, then you may need to go with a tank system.

Our choice for the best storage tank water heaters 

Below are two of the best tank water heaters. One of the heaters is electric while the second one is gas-powered.

A.O Smith Signature 50-gallon gas tank water heater

The A.O Smith Signature 50-gallon system is a tall, reliable, and efficient natural gas tank water heater. It is a 50,000 BTUs heater suitable for households with five or more people. The low NOx tank water heater has an inbuilt electronic gas valve that allows you to control the water temperature even without an external electricity source.

It has a ceramic fused tank that is corrosive resistant and a self-cleaning dip tube to prevent or minimize sediment build-up hence providing you with long service life. Additionally, it has a status LED status indicator for easy diagnostics. 

A.O Smith gas tank water heater

Rheem performance Standard 40 Gallon Electric Water

The Rheem performance water heater is an energy-efficient electric tank water heater with a 6-year limited warranty. The 40-gallon tank water heater with an energy factor EF or 0.96 has an isolated tank design that minimizes heat losses. Rheem Performance is a 240VAC, with a dual 4.5KW copper heating element and a hot water temperature range of 120-160 degrees F   

It has a premium grade anode rod to reduce deterioration and corrosion hence ensures longer service life. The water heater has over-temperature protection that disconnects the electrical power when the temperature exceeds the set threshold.


When looking at the tankless vs. tank water heaters comparison, the tankless seems more attractive. It has benefits such as compact sizes, better energy efficiency, and low operational costs. However, it is more costly to purchase and install than a storage-tank-based system. Unfortunately, the tankless may not be for you if you have a large household with high hot water demands. 

If you have a medium or a situation where there is a regular or high demand for hot water simultaneously, you may consider installing multiple tankless water heaters. However, as the demand increases, you need to determine if the cost of purchasing and running a higher-capacity tank water heater is more cost-effective. If you settle for the tank system, make sure you understand its lifespan and the maintenance costs, such as replacing the anode rods and other parts.

Reviews Tankless Water Heaters

Tankless Water Heater Reviews and Shopping Guide

Disclaimer: This post contains affiliate links for which I earn a commission.

Note: Before starting, click here to open a new tab in Amazon to search for any tools or equipment that you might need.

A tankless water heater provides unlimited hot water while consuming less energy than a storage-based system. The heater, which delivers hot water on demand, enhances your comfort and convenience at lower costs. And there are even compact or portable models for outdoor applications such as RVs, mobile homes, and other temporary spaces.

As the tankless water heaters market continues to grow, so are the manufacturers, types and models. Today, there is a wide variety of water heaters in the market. These often differ in capacity, physical size, energy usage, efficiency, cost, and other features. 

Ideally, when looking for a water heater, you need to ensure that you purchase an energy-efficient, cost-effective, and long-lasting heater. Usually, the three common types of tankless water heaters, based on energy source are; gas-powered, electric, and hybrid that uses surrounding air to heat the water. When looking for a water heater, there are factors such as indoor or outdoor placement, propane or natural gas energy source, remote control, and others that you need to consider. 

Generally, there are also three types of tankless water heaters based on capacity and application. These include 

Each of these could be propane or natural gas-powered, electric or hybrid. That said, we have compiled a list of the best tankless water heater reviews to help you narrow down on the right product. 

Note: Before starting, click here to open a new tab in Amazon to search for any tools or equipment that you might need.

Best tankless water heater reviews

Below are some of the best tankless water heaters that we would recommend. The list includes reviews for the electric, propane, and natural gas water heaters we recommend. Some are for indoor spaces, while others are for outdoor installation. 

Ecosmart ECO 11 

Ecosmart ECO 11
Ecosmart ECO 11 

EcoSmart ECO 11 is a lightweight and reliable tankless electric water heater with great space, energy, and water savings. The 2 gallons per minute tankless heater is ideal for smaller homes or installations with lower demand for hot water. It can support multiple applications such as two sinks and a shower in warm climates. 

Generally, the heater, with a compact, visually appealing, and easy to install design, is attractive due to its cost and space-saving features. However, the Ecosmart ECO 11 is only suitable for light applications that do not require a high flow rate. 

Besides cost and space, the 13 KW, 240 V tankless water heaters use a self-modulating technology that optimizes the heating performance, resulting in energy savings. 

Other features include a digital control that you can use to adjust the hot water temperature in one-degree steps. Finally, the Eco 11 has a durable structure of stainless steel and copper materials, hence no risk of corrosion.  

Prices start from $277

Click here to buy it on Amazon.

Rinnai V65eN Natural gas tankless water heater

Rinnai V465eN is a compact and easy-to-install, outdoor-only, natural gas water heater that allows you to free up or save space in your house. Generally, the reliable Rinnai tankless water heater combines comfort, efficiency, and great value for money. The low-cost, energy-efficient water heater helps you to save space and heating costs.

Rinnai V65eN Natural gas tankless water heater

With a 6.6 GPM, Rinnai V465eN is suitable for small and medium homes or structures with one or two showers. With an electronic ignition, the heater does not have a pilot light – enabling you to save energy.

It has a 150,000 BTU maximum power output and an impressive energy factor of 0.82. Further, the heater has an adjustable temperature range of 98°F to 140°F. 

Besides the above, it has safety features such as enhanced scale detection that minimize buildup, deterioration, and damage. Also, it has a temperature lock that prevents unauthorized adjustments to settings that would result in more energy usage or safety issues such as scalding.

Finally, the manufacturer provides a 10-year warranty on the heat exchanger for residential applications, 5-years on parts, and 1-year on labor.

SIO Green IR-30 Electric tankless water heater

The SIOGreen IR-30 is a compact, infrared-based POU water heater. It uses Quartz infrared heating elements to provide continuous hot water on demand. The easy-to-install, low-maintenance point-of-use tankless water heater has superior energy efficiency. In particular, its low power consumption allows you to save up to 65% on water heating costs and is suitable for various applications. Additionally, it is a long-lasting heater that can reliably give you service for over ten years.

The infrared heating can safely break down the hard water deposits; hence minimize the risks of scale buildup, bacteria, and algae growth. Consequently, it is suitable for hard water and other types that are challenging to heat on other systems.

The Sio Green IR30 is a 3.4KW, 110 volts point-of-use water heater that you can hardwire or plug into a standard outlet.

Unfortunately, the flow rate on the quartz tubes based heater is slower compared to the systems with metallic heating chambers. In particular, when there is a big difference between the cold inlet water and the hot outlet, the flow rate is usually low. 

GASLAND BE158 Outdoor Portable Propane Gas Tankless Water Heater

GASLAND BE158 is a fast and energy-efficient outdoor tankless propane gas water heater. The 1.58GPM heater is a compact, lightweight, and portable water heater that you can carry and install in various outdoor locations, including camping, RVs, and other places where you need hot water.

lightweight portable tankless water heater

Further, it has enhanced safety features such as anti-freezing, flame failure, and overheating protection. Other great features include a low water pressure startup. A 41,000BTU/hr. power output ensures unlimited hot water almost instantly after turning on the tap. You can also adjust the water flow and temperature to suit your preferences. 

Generally, the energy-efficient water heat allows you to save on heating costs. In particular, the main burner and heat exchanger employs advanced combustion technology that results in less burning noise and gas consumption, hence improving comfort while saving you money.

Takagi T-H3-DV-N Natural gas water heater

Takagi T-H3-DV-N is one of the most energy-efficient condensing indoor natural gas tankless water heaters. Suitable for residential and small commercial environments, the heater can support up to four showers in warmer climates and three in cold places.

Major benefits include a decent design, ultra-low NOx emissions, and enhanced safety features such as overheat, surge, and freeze protection. Also, it has inbuilt computerized features to optimize the healing process and efficiency and control the water temperature, hence deliver significant energy savings. It also has troubleshooting diagnostic codes for easy and faster maintenance.

Also, it supports demanding applications such as domestic recirculation or space heating systems. It also has a long-lasting, commercial-grade copper alloy heat exchanger for efficient heat transfer and long service life. Further, you can link the compact, lightweight heater to other heaters to increase capacity and convenience. 

With this model, you can link up to four devices using the Easy Link feature without requiring a Multi-unit controller. If you want to link more units, you can use the Multi-Link option and add up to 20 heaters using a multi-unit controller. As such, Takagi is a highly scalable heater ideal for all sizes of residential and commercial applications.

Finally, you will enjoy a 15-year limited warranty on the heat exchanger for residential installation and 5ys on the parts. For commercial, there is a 5-year limited warranty of the exchanger and 5-year for parts.

One drawback of the Takagi is its challenging installation process. In most cases, you may require a professional installer. But once the system is in place, Takagi is among the best indoor gas water heaters. 

Rheem RTEX-18 electric tankless water heater

The Rheem RTEX-18 is a lightweight, powerful and easy-to-install, electric tankless water heater. Besides its aesthetically pleasing appearance, you can easily mount the compact unit on a small area on the wall. 

Further, it allows has a 360 installation capability that enables you to mount almost anywhere in the house. Moreover, it is a slim heater that you can slide and fit in confined and small spaces hence providing you with a wide selection of installation options. However, the 4.4 GPM, 18 KW requires a 240 Volts supply and two 40 amps circuit breakers. 

Rheem tankless water heater

Ideally, the tankless heater is suitable for multiple applications and can deliver hot water to two showers or faucets simultaneously. It has a self-modulating technology that improves energy efficacy by adjusting the power output depending on the water flow – enabling you to save on electricity bills.

Other than the sleek and aesthetically pleasing design, the Rheem model is reliable, durable, and easy to maintain the tankless water heater. 

Bosch US4 Tronic 3000

Bosch US4 Tronic 3000 is a compact, lightweight, and easy to install mini tank electric water heater. However, the point-of-use electric water heater has a small 4-gallon mini tank, and therefore not purely tankless. In most cases, people refer to it as a semi-tankless or mini-tank water heater. 

It provides unlimited hot water on demand and is ideal for low-demand applications such as sinks, hand washing. The compact, energy-efficient, and easy to install unit can fit in many spaces, including under a bathroom or kitchen sink. In practice, the system supports up to 2 sinks simultaneously. An easy-to-use thermostat allows you to adjust the temperature to suit your preferences.

Usually, the Bosch US4 is a reliable, easy to maintain, and long-lasting water heater that provides unlimited hot water on demand. Its water tank has a glass-lined interior hence no risk of corrosion and deterioration by mineral deposits. You can use the heater as a standalone or in-line with another central hot water source located far away from the application area.

Reviews Tankless Water Heaters

Tankless gas water heater reviews and buying guide

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A gas tankless water heater uses the same heating process as the traditional tank-based gas systems. However, it does not have a storage tank, and will only heat the water when a user needs it, hence significant energy savings. 

In the storage-based systems, the hot water losses some energy during the standby period, and this does not happen in the tankless hence more on savings heating costs.

The heaters require less space while lasting much longer and providing you with unlimited hot water at any time. However, the systems are more costly than the storage-based, and some models may require an expensive vent system and an upgrade of the natural gas line. That said, the savings in energy, operational, and maintenance costs make the tankless system more cost-effective in the long term. 

How a tankless gas water heater works

Once you turn on a hot water tap, the tankless hearer draws the cold water. A flow sensor detects the water and activates the gas burner that then heats the heat exchanger.

The natural or propane gas, depending on the model, flows into the burner upon which a flame or electrical spark ignites it. The heat from the burner heats the heat exchanger, which, in turn, heats the incoming water to the desired or set temperature. Consequently, the system delivers hot water almost instantly. A vent pipe then safely exhausts the combustion gases to the outside.

Turning off the shower, sink, or another faucet, will stop the flow and the gas flame will go off, hence shutting down the heating process. As such, the heater will only operate when there is a need for hot water, and this delivers significant energy savings since there are no losses when on standby.

Benefits of tankless gas water heaters

Tankless gas heaters provide a wide range of operational, financial, and environmental benefits. These include but not limited to;

  • Provides endless hot water on demand
  • Durable with a long service life of about 20 years 
  • Higher energy efficiency and saving on heating costs
  • Less risk of water leaks since there is no storage task
  • Easy and inexpensive maintenance
  • Environmentally friendly 
  • Uses less expensive natural gas or propane for energy 
  • Flexible indoor or outdoor installation options

Disadvantages of tankless gas water heater

Despite the many benefits, the tankless systems have drawbacks such as;

  • Requires expensive stainless steel tubes for venting 
  • Requires annual servicing hence increasing operational costs
  • High up-front costs which could be almost three times that of a storage tank based heater
  • Requires good plumbing work to ensure that the water has enough pressure
  • When there are multiple uses, the budget systems will split the available hot water among the fixtures. in turn, this leads to fluctuating temperatures, inconsistent flows, and some discomfort.

Factors to consider when looking for a tankless gas water heater

There are various issues to factor in when looking for an on-demand gas water heater. Paying attention to these ensures that you acquire a system that best matches your requirements. 

While you may not get the exact features and performance per your expectations, you can settle on a product that ticks most of the boxes. The main things to look for include;

Physical dimensions or size

Space, where you want to install the system, influences the size of the gas heater that you purchase. Ideally, you should get a heater that will fit comfortably in your available or the preferred location. Generally, most gas tankless water heaters are larger than the electric models. The heaters often have an exhaust system that takes up some extra space.

Tankless gas water heater reviews

Type of fuel the heater uses

You have a choice between propane and natural gas. However, propane provides more benefits, including higher efficiency hence low fuel usage. Compared to the natural gas and electric models, propane has fewer emissions and therefore environmentally friendly.

Energy factor

A water heater with a higher energy factor (EF) is more efficient, hence delivers more cost savings. As such, a tankless gas water heater with a high EF value results in lower energy bills.


The type of venting for the tankless gas water heater is another consideration since these also differ from one model to the other. Also, the design, appearance, indoor or outdoor installation, and other factors influence the venting system.

Generally, there are two main types of venting; direct-vent and power-vent. Each of these exhausts to the outside. However, for combustion, the direct pull air from outside and will require two pipes intake and one for exhaust. On the other hand, the power vent uses the indoor air and only requires one exhaust pipe.

This brings about placement issues since a power vent requires larger rooms to provide adequate gas for combustion. Alternatively, a room with vents and an opening to bring in fresh air for combustion is also suitable.

The direct vent types do not require a large room and can be placed in a wide range of smaller spaces. 


To ensure the safety of users and the heater, it is important lookout for a model that has protection against various conditions. That said, this may also vary depending on your location, For example, anti-freeze protection is critical in areas that suffer from freezing but may not be necessary for warmer climates. Other safety features include overheating protection, surge protection, low water flow protection, high water pressure protection, etc. 

Capacity in gallons per minute 

The capacity of the hot water unit depends on your requirements. For single and low-demand applications for small families, you may consider 2-5 gallons per minute. However, if you need more hot water, you need to look for a heater that provides at least 8 gallons per minute.

The warranty period and terms

A longer warranty ensures that the manufacturer has great confidence in the product, and in case anything goes wrong, they will address the issue. Some manufactures may have some conditions to honor the warranty. For example, they insist that you must use a licensed installer. So, even if you have the skills to install the tankless gas heater, doing it by yourself will void the warranty.

Choosing the best tankless gas water heater

Other than the above features, you need to carry out proper research on the models you narrow down on. In particular, you have to pay attention to ease of assembly, mounting, and installation procedures, especially if purchasing online. Although you may have some technical skills to mount the compact heaters, some procedures, such as venting could be beyond your ability and may require professional assistance.

Another thing you need to find out is about the brand, warranty, cost, certifications maintenance, and customer support. For example, the availability of replacement parts as well as the procedure of fixing them yourself. You can check reviews from a wide range of places, including social media, YouTube, shopping websites, and other areas.

Today, there are several reliable brands in the market. However, these differ in the type of gas, size, capacity, and other features. That said, you can get a reliable water heater from established brands such as Camplux, Takagi, Rinnai. Paloma., Noritz, Eccotemp and Gasland.

Best tankless gas water heaters 

Here are some of the best gas tankless water heaters that we recommend. However, the list is not exhaustive.

Rinnai RUC98iN

The Rinnai RUC98iN is a powerful and efficient condensing gas tankless water heater. The 9.8 GPM indoor-only heater has a sleek design and easy access and uses digital control and display. It also emits very little nitrogen oxide (NOx) and therefore environmentally friendly. Additionally, the Rinnai water heater has a high Energy Factor of 0.92, hence reducing heating costs. It is also recirculation pump ready, meaning that if you enable the feature, the heater will provide hot water instantly while allowing you to save on water. An electric ignition system further reduces gas consumption compared to using a pilot light.

Another good feature of the Rinnai is the Wi-Fi capability which allows users to remotely turn the heater on or off, control the output temperature, etc. Additionally, you can use the feature to lock the temperature to ensure that other users do not change to a higher level with energy wastage.

Additionally, the Wi-Fi connectivity allows technicians to access the heater remotely, monitor performance, and carry out diagnostics. As such, a technician can identify the problem remotely and therefore come for the physical repair when prepared, hence saving your time and maintenance costs.

Rinnai RUC98iN gas tankless water heater
Rinnai RUC98iN


The NORITZ NR50OD is a lightweight indoor natural gas-based tankless water heater that delivers endless hot water on demand. Suitable for outdoor applications, the water heater has high energy efficiency with an energy factor of 0.91, hence savings on heating costs. The 120000 BTU, 5 GPM water heaters provide superior hot water delivery and energy savings. 

Further, the NORITZ water heater has very low emissions and is a good choice for indoor applications. It uses advanced carbon reduction technology to ensure the lowest NOx emission compared to other gas heaters.

It comes with a 5-years warranty on internal components, 12 years for the heater, and 1-year labor.

One of the drawbacks is the high purchase cost. 

Takagi T-H3-DV-N indoor natural gas tankless water heater

Takagi T-H3-DV-N indoor natural gas tankless water heater
Takagi T-H3-DV-N indoor natural gas tankless water heater

Takagi T-H3-DV-N is a compact, natural gas tankless water heater that delivers unlimited hot water on demand. You can install the energy-efficient and space-saving heater in various places in your house. The 199,000 BTU, 10GPM heater has several advanced digital features.

Benefits include modern design, being environmentally-friendly, and enhanced safety. Computerized features enable easy temperature control, optimized heating process, significant energy savings, and more. In safety, Takagi includes overheat, surge and freeze protection. It also has diagnostic codes that ease the maintenance procedures. 

However, it is a bit difficult to install and may require a professional installer. But once installed, the Takagi is one of the best gas water heaters. 

The ultra-low NOx emissions heater has a commercial-grade copper alloy heat exchanger, which provides superior heat transfer in addition to being long-lasting. Finally, you get a 15-year warranty in a domestic installation.

Suitable for both residential and commercial applications and can support up to three showers in warm climates.

Click here to buy it on Amazon.

Rheem RTGH-95DVLN Tankless Natural Gas Water Heater

Rheem RTGH 95DLN is a high-efficiency, direct vent natural gas tankless water heater. The 9.5 GPM, indoor-only, water heater is small and easy to install with a 12-year limited warranty. It has inbuilt electronic controls that enhance its safety and energy efficiency. The 199, 900 BTU, low NOx device has a stainless steel condensing heat exchanger, a 94% energy efficiency, and an energy factor (UEF) of 0.93. 


Other features include an inbuilt condensate neutralizer and enhanced water savings. Its low flow activation ensures hot water is available whenever required including times of low demand. Also, it has a hot start programming that reduces the cold water busts while a recirculation pump kit-ready improves water savings.

Rheem RTGH-95DVLN Tankless Natural Gas Water Heater

Click here to buy it on Amazon.

Camplux Pro 26L

Camplux Pro 26L Gas Tankless Water Heater

The Camplux pro 26L is a high-capacity natural gas tankless water heater. With an impressive 6.86 GPM, the large outdoor heater is ideal for high demanding applications. The heater can meet the hot water needs of a large house while supporting up to three showers and a kitchen simultaneously. Its 180000btu/hour output power ensures that water is hot quickly almost at the instant you turn on the tap or faucet.

The easy to install with ultra-low NOx emission includes several safety features such as overheating and freezing protection, flame failure device, low water flow protection, etc. Additionally, it has a simple and aesthetically pleasing design, so you can install it anywhere. The Camplux has a 99 F to 140 F (37-60 C) adjustable temperature range.

The outdoor installation does not require venting hence fewer installation costs in pipes, accessories, and labor. It also has a detached digital control panel which you can install 3.3 feet away from the heater using the provided cable. The remote control allows you to manage the outdoor heater from inside the house.

Click here to buy it on Amazon


Tankless gas water heaters are more efficient since, unlike storage-based systems; they do not continuously heat and store hot water. Additionally, tankless systems have longer lifespans. With regular maintenance, it can serve you for between 15 and 20 years while delivering significant savings on energy, water, and overall operational costs.

Reviews Tankless Water Heaters

Most Expensive Showerheads Reviews and Buyer Guide

Disclaimer: participates in the Amazon affiliate program. If you click on some of the links below, we may receive a commission that is at no cost to you.

Note: Before starting, click here to open a new tab in Amazon to search for any tools or equipment that you might need.

As technology advances, showerheads continue to evolve and include more advanced features.

The most expensive showerheads today come with massage functions and upgraded flow, not to mention the sleek designs.

In short, these shower heads not only look good but also function very well.

From units dripping with elegance to shower functions that mimic the soothing effect of rain, there is a lot that these expensive showerheads have to offer.

Also Read: Best Point of Use Tankless Water Heater

Want a luxury shower head for your bathroom?

A-List of The Most Expensive Shower Heads

Below are some of the most expensive varieties available in the market and the features that make them tick.

1. Speakman Anystream Showerhead

This is a high-pressure shower head with a 360-degree streaming stream that provides evenly distributed water all around.

You can alternate between rain, intense, and flood settings depending on your mood and the results you want to achieve.

The Speakman Anystream is fitted with a plunger that helps intensify the flow.

This makes the showerhead an ideal choice if you have a low water pressure problem.

The flow restrictor is removable, and you can get rid of it if you do not need it.

At just 5 inches in length, this showerhead is perfect if you are looking for a compact yet elegant addition to your bathroom.

Maintenance is non-existent since even the inbuilt plunger self-cleans. With this showerhead, you never have to worry about hard water and sediment buildup.

The showerhead is available in flow rates of 1.75, 2.0, and 2.5 GPM.

2. AquaSpa 48-mode Combo Showerhead

The AquaSpa 48-mode is among the most affordable luxury showerheads in the market.

As the name suggests, this unit comes with two heads, one fixed and the other one handheld.

Thanks to a revolutionary adjustable extension arm, you can move the hand shower forward, back, and lower for easy reach and optimal angle and height.

The two heads deliver a 2.5 GPM water flow, and they both measure 4.2 inches.

Also Read: Best Gas Tankless Water Heaters Reviews and Buyer Guide

Each head also comes with six settings that include mist, rain, water-saving, and massage.

The stainless-steel hose is 6-foot long, allowing enough flexibility in the bathroom.

There are also the heavy-duty brass hose nuts designed to ensure that you enjoy a leak-free connection.

The manufacturer offers the showerhead in chrome, oil-rubbed bronze, and brushed nickel.

You can choose which among these options work for you and goes with the rest of your décor.

3. ELLO&ALLO Stainless-steel Shower Panel

This is a futuristic shower panel that comes with 4 adjustable jet nozzles handheld head, a rainfall head, and a waterfall feature.

Additionally, the shower panel is fitted with an overhead LED temperature display that allows you to customize the water temperature to your liking.

The multi-outlet switches make it easy to control the multiple water effects and combinations.

You can turn two of these settings at the same time, depending on your water pressure.

All this, in addition to the sturdy build and sleek design, sets this shower panel apart making it ideal if you are looking for something unique.

You may have to pay a little more as this is among the most expensive showerheads, but the experience is well worth it.

The manufacturer offers a two-year limited warranty on parts for this panel.

Ensure that the panel is well mounted to ensure that you enjoy the ultimate spa experience.

4. KES XB6210-BK Pressure Balance Showerhead

This showerhead comes fitted with an advanced pressure balance disc cartilage that works to protects you from scalding injury in case there is a change in water pressure.

The extra-long shower arm offers the flexibility you need to enjoy your shower.

The premium brass faucet is designed with durability in mind.

It is also easy to use, not to mention that connecting the unit to your existing setting is quite easy.

The showerhead is large, and the straight water flow delivers that drenching rainfall feel.

In the case of buildup, cleaning the spray holes is also easy.

Since this showerhead comes in a wall-mount design, you do not have to install a complex ceiling mount to fit it.

The package comes complete with a faceplate, handle, rough-in valve, shower arm, showerhead, and flange.

5. G-Promise Luxury handheld showerhead

This G-Promise creation features a metal bracket for worry-free use, a 10-stage filter that removes all the rust and sediment from your water, and a 6-function showerhead.

You can adjust the shower to power rainfall, massage, and water save, among other functions.

The stainless-steel hose is long, flexible, and non-winding, so you enjoy a wider shower range.

This, in addition to the wide variety of shower settings, ensures that you enjoy your shower experience, whatever your mood.

The filter will serve you well for about six months.

Replacing it is easy, and the filters are readily available as long as you know the type and size that you are looking for.

Installing this shower head is easy, and the manufacturer provides well-detailed instructions.

You also get a 10-year warranty with this unit, so you are guaranteed quality and durability.

6. Aolemi Rainfall Showerhead

This Aolemi showerhead comes with an all-metal construction designed to ensure dependability and durability.

The unit is also fitted with an overhead rainfall shower and a handheld spray.

The design is reliable, what with the adjustable slide bar and the flexible hose.

You can easily switch from the hand spray to the top shower using the conveniently placed diverter switches.

Installation is easy.

The unit comes fitted with 2 installation holes, an adjustable adapter in case you need to alter the hole distance, and all other necessary wall mounting hardware.

You have to option of installing the shower at 70 cm or adjusting it all the way to 120 cm.

For best results, ensure that the faucet is installed 80-100 mm above your bathroom floor.

In case you need to extend the shower, the extension tube will make all this possible.

7. GABRYLLY 3-Function Shower System

The GABRYLLY shower features a 3-function handheld head and a one function rain shower head.

With an 8 inches overhead shower and the handheld one, you are guaranteed an excellent experience even when there is low water pressure.

The shower unit is fitted with a balancing valve cartridge so you can adjust the water pressure as necessary.

Thanks to this brass valve, the pressure and water temperatures in both the shower functions are well maintained.

Each unit also comes with a 10-inch ceiling arm, an elbow, a showerhead, and a shower holder.

The elegant finish and sleek look are sure to complement the rest of your décor.

If you are looking for a user-friendly shower head that will deliver consistent service for years, this unit is ideal.

The manufacturer offers a 5 -year guarantee on parts, so you know are getting nothing short of the best quality.

Most Expensive Showerheads Buyer Guide

Fixed Or Handheld

The option you choose will depend on your existing setup. If you don’t have a setup in place, consider the variety you would prefer for your bathroom.

Handheld showerheads offer more flexibility while the fixed type is perfect if you like having your hands free.

If you can’t choose between these two, you also can go for dual showerheads.


You can get a luxury shower head that matches your style. Just take your time to check the options available in the market, and you will find one that does not need to be customized.

Common finishes include nickel, polished brass, oil-rubbed bronze, brushed nickel, and classic chrome.

Some styles are suited for contemporary bathrooms, while others will work well if yours is a traditional theme.


Some showerheads come with multiple nozzles that mimic the spa experience. Others have spray and massage settings that can be customized as required.

If you want to enjoy a shower that feels like standing under the rain, the market has precisely that, and much more.

Just have a rough idea of what experience you want and then concentrate your search along those lines.

From showerheads that will offer immense flexibility to those that will deliver just the right pressure to relax your muscles, you have more than enough options at your disposal.

Technology continues to advance, and with this growth comes highly innovative and efficient products.

There are shower heads that are made with low-pressure water sources in mind.

Check your home’s unique needs and see whether you can find a showerhead that meets most, if not all, of them.

Final thoughts on Most Expensive Showerheads

The most expensive showerheads come with many features that set them apart. Manufacturers are keen to ensure that these luxury pieces not only look great but also function well.

The best varieties marry effective functions and beautiful aesthetics to bespoke pieces that are sure to revolutionize your shower experience.

Suppose you have an opulent interior taste, but you do not have much to spend on showerheads.

In that case, many varieties come with innovative functions but are relatively affordable.

Take your time and ensure that you get a shower head that matches your present and future needs. (Source)

Reviews Tankless Water Heaters

Best Point of Use Tankless Water Heater

Disclaimer: participates in the Amazon affiliate program. If you click on some of the links below, we may receive a commission that is at no cost to you.

Note: Before starting, click here to open a new tab in Amazon to search for any tools or equipment that you might need.

Imagine instantly getting a warm shower as the washing machine is running? That is what you get with a point of use tankless water heater.

If there is a point in your home where you do not get the water flow at the desired temperature, this water heater is all you need.

Below we look at the best point of use tankless water heaters and highlight some of the features that make them tick.

Also Read: Best Gas Tankless Water Heaters Reviews and Buyer Guide

What Is the Best Point of Use Tankless Water Heater?

The best point of use tankless water heater is Rheem Residential Tankless Water Heater.

It comes with an adjustable digital thermostatic control that features an LED display with an accuracy of +/1 degrees.

The unit is equipped with two durable heating elements and a self-modulating power control.

According to the manufacturer, the unit is 99.8% energy efficient and equipped with a water saving shower head delivering 1.5 gallons of water per minute.

A-List of the Best Point of Use Water Heaters

If Rheem Residential Tankless Water Heater above doesn’t sound like the real deal to you, then below are some other great alternatives you can choose from.

Bosch Tronic 3000 T4 Gallon Mini Heater

Bosch Tronic 3000 T4 Gallon Mini Heater

This Bosch heater is perfect if you are looking for a compact water heater that you can conveniently tuck under your sink.

Despite its small size, this heater delivers enough water for a quick shower or wash a few dishes.

Other notable features include a 6.8 GPH rate of recovery, a water pressure range of 150 psi, and 4-gallon water holding capacity.

The heater runs on electricity and requires 12 amps, 120 volts of power.

This unit is fitted with CFC-free foam insulation, so no heat is lost to the outside. It is also lined using glass material for enhanced durability.

You do not necessarily need to mount this mini heater on the wall.

You can leave it on the floor or place it on a shelf, so it is easy to move to any other location where you need hot water.

Click here to buy it on Amazon.

Stiebel Eltron 120V Water Heater

This Stiebel Eltron instant water heater is close to 50% more efficient when compared to most tanked water heaters.

The heater is rated 3000-watts and uses 120 volts power, so you do not need to change to a 240V circuit, and you get hot water immediately you turn the tap on.

This on-point water heater is fitted with a copper heat exchanger that enhances its efficiency.

It also comes with hydraulic controls so it can run quietly, and you can use it without disturbing the rest of your household.

This heater unit also has a flow reducer cum aerator. It is also one of the most affordable units in this list of the best point of use tankless water heater.

If you are looking for an inexpensive yet efficient at point tankless heater for your sink, this unit is ideal.

Also Read: How To Test The Water Heater Thermostat in 10 Simple Steps

Thermoflow UT10 2.6-Gallons water heater

This Thermoflow creation comes with a mini tank that will hold enough water for a shower.

While the 2.6 gallons water tank is not enough to serve your entire home, this unit is a great choice for that sink that doesn’t get enough hot water in your home.

The water heater comes with a 15AMP double-pole breaker, Thermostop function, and 2.6 GPM.

To ensure energy efficiency, the mini tank is fitted with EPS foaming technology.

With the inbuilt thermostat, you can select the temperature you desire.

You also have the option of switching to energy-saving mode or frost protection for those cold days.

The Thermostop circuit in this heater is designed to ensure that your water doesn’t heat above a certain temperature. You are guaranteed of consistent service and safety where scalding is concerned.

Ecosmart P0U 6

Ecosmart P0U 6

This is another reasonably priced tankless water heater you can get for your home if you do not get enough warm water in all areas you would like.

The unit is built with low flow applications in mind and will work well for 1GPM flow or lower.

The tank is so compact that it will fit in a small cabinet, under the sink, or any other area close to the water source.

It is perfect for wet bars, bathrooms, medical offices, and recreational vehicles, to mention but a few.

This Ecosmart POU comes with a digital display, so it is easy to tell the water output temperature.

At a 35 F temperature, the heater can deliver over 1.07 GPM, and this amount will fall as the temperature rises.

Click here to buy it on Amazon.

Camplux ME25

Camplux ME25

The Camplux ME25 comes with a 2.5-gallon capacity, a thermostat function, and freeze protection.

This unit will raise your temperature form 50-140 degrees Fahrenheit.

With a thermostat, you get to easily determine your water temperature.

The higher your choice, the more the energy required to heat the water to that temperature.

Since water is held within the small tank, you do not need to wait to get your water to the temperature you want.

The free-protection feature also makes this a perfect addition in areas that experience extremely cold weather.

This heater can either be wall or floor mounted.

Installation is easy, and you do not need to do a recirculation to have the heater up and running.

If you want the best point of use tankless water heater for your garage, patio, or any outdoor station, the Camplux ME25 is an ideal choice.

Click here to buy it on Amazon.

How Point-of-Use Water Heaters Work

In your home water heating system, water is usually drawn into the heater for heating before you can access it in the hot water tap.

In the case of the tankless point of use heater, the water is heated as the water passes through it towards the tap.

These heaters are called point-of-use because they are fitted under the sink or close to the plumbing fixture.

Since it is tankless, no water is retained inside the tank, making this a more energy-efficient option.

Types of Point-of-use Tankless Water Heaters on the market

There are three points you can install these water heaters in your home. For each of these points, there is a different type made to match the need at this point.

Point of Use Tankless Heater for Shower

This one comes with a higher flow rate when compared to the other varieties.

It is installed as close to the destination as possible to ensure that you get a steady flow of water immediately you turn the shower on.

Keep the number of people who will be using the heater within a certain time in mind when shopping for a point of use heater for the shower/bathroom.

An ideal option should be able to deliver a consistent flow of hot water for four minutes, which is the average time for a quick shower.

Point of Use Tankless Heater for Washing Machine

This is a good addition if you are looking to save on energy.

Since a washing machine requires hot water, this heater will ensure enough of it whenever necessary.

Even if you do only two laundry loads every week, the washing machine point of use will save you anything between 2&5% in energy bills.

To decide which size of these water heaters is ideal for your washing machine, consider your household needs.

A larger heater will ensure that you get instant hot water for each load without overworking your unit.

Point of Use Tankless Heater for Sink

Whenever there is a sink, you can install this heater and enjoy instant and flawless hot water.

This variety can also be installed in outdoor areas where you may occasionally require hot water.

You need to keep your water pressure in mind when shopping for a point of use heater.

Some varieties will not function as efficiently at certain pressures, so you need to be sure that the unit you buy will work for you.

Point-of-Use Tankless Heater Installation

Installing this heater is easy, and if you have all the necessary tools, you can have it working in an hour or less.

The smaller units use 120v while the larger varieties run on 240v, so you need to ensure that you have the right outlet to match your heater.

For propane and natural gas-powered point of use tankless water heaters, you may need to also install a venting facility that takes out the waste gas from your house.

Since your tank’s performance, to a large extent, depends on installation, you may need to get a professional to complete the process for you.

Advantages of a Point of Use Water Heater

Instant Results

Are you busy and don’t have the time to wait for your water to heat? This heater will ensure that you have hot water when you need it.

No Water Wastage

You don’t have to pour gallons of water in order to get your water to the desired temperature.

Since water is heater at the point of use, you get it at your outlet in just a few seconds.

Complement Your Central Heating

If yours is a large house, this heater will ensure that you still get hot water in that tap on the other side of the house.

Decentralizing your heating system will mean that you save on water and reduce/eliminate wait time.

Final Thoughts on Best Point of Use Water Heater

Finding the best point of use tankless water heater can be a lot of work, but we hope that our recommendations will make your work easier.

You can get more than one unit and fit them in different parts of your house.

With this heater, you can kiss, waiting for water to heat before a shower goodbye.

This is a more efficient heating option that will make it easy for you to save on water and power. (Source)

Reviews Tankless Water Heaters

Best Gas Tankless Water Heaters Reviews and Buyer Guide

Disclaimer: participates in the Amazon affiliate program. If you click on some of the links below, we may receive a commission that is at no cost to you.

Note: Before starting, click here to open a new tab in Amazon to search for any tools or equipment that you might need.

Gas tankless gas heaters are increasingly becoming popular. This is because they provide hot water on demand, so no time is spent waiting.

Even better, these heaters are more energy efficient when compared to conventional varieties.

In some cases, homeowners who install these tankless heaters quality for tax incentives of up to $300.

If you are looking to save on energy costs and get enough hot water whenever you want, below are the best gas tankless water heaters available.

Note: Before starting, click here to open a new tab in Amazon to search for any items that you might need.

What is the Best Tankless Gas Water Heater?

The best gas tankless water heater is GASLAND Outdoors BS158 instant propane water heater.

Also Read: How To Test The Water Heater Thermostat in 10 Simple Steps

It’s a CSA approved water heater meeting both US and Canadian standards.

The unit is equipped with anti-freezing protection, flame failure device, and an overheating protection feature that ensures the safety of everyone in the house.

It’s lightweight and compact design makes it easy to carry. Thus, the heater is ideal for use at home, camping and at the beach.

With 41,000btu per hour, this unit provides endless on demand hot water without delays.

The manufacturer has incorporated 11.5% energy saving technology. This feature will save you on energy bills compared to traditional water heaters.

A-List of the Best Tankless Gas Water Heaters?

If GASLAND Outdoors BS158 doesn’t sound like the real deal to you, then there are other great alternatives to choose from. Below is a detailed review guide.

1. Rinnai RUC98iN

Rinnai RUC98iN

The Rinnai RUC98iN is perfect if yours is a large family. The heater is suitable for households where hot water is in high demand.

The fact that it uses natural gas in place of electricity means that it is a much cheaper option.

Thanks to the advanced technology, the heater is ultra-efficient, and you get hot water instantly with minimal, if any, energy wastage in the process.

The RUC98iN comes with a metallic finish making it perfect for appliances with the same color.

In addition, the heater has a sleek and compact design ideal for small spaces and indoor installation.

As far as performance is concerned, this natural gas heater delivers up to 0.96 Energy Factor, 199,000 BTU, AND 95% Thermal Efficiency.

The heater has extremely low emissions, which makes it environmentally friendly.

Click here to buy it on Amazon.

2. Rheem RTGH-95DVLN


Rheem is among the most trusted brands, and for a good reason too.

The manufacturer provides durable and efficient natural gas water heaters in the market.

The RTGH-95DVLN is not any different.

This water heater is designed to provide up to 9.4 gallons of hot water every minute.

Thanks to its stainless-steel condensing water exchanger, this water heater needs less energy to heat water to the desired temperature.

The intelligent electronic controls further enhance the heater’s efficiency and safety.

Like any other good gas tankless water heater, the RTGH-95DVLN is a fraction of the standard heater tank.

At 18.5 x 9.8 x 27.5 inches, this heater is compact enough to be squeezed in the tiniest of places.

You can hide it in a closet or any other small place in your house and still enjoy enough hot water to run your entire household.

The modern, clean design also makes it easy to blend the heater with your décor.

Click here to buy it on Amazon.

3. Takagi T-KJr2-IN-NG

Takagi T-KJr2-IN-NG

The Takagi T-KJr2-IN-NG is ideal for apartments and small homes where hot water demand is not as high. This is the smallest heater made by Takagi.

Despite its small size, this tankless water heater will provide enough water for a family of 3-5 effortlessly.

At its best, the heater can produce up to 6.6 gallons of water every minute.

The fact that it is reasonably priced compared to others on this list makes it a perfect buy if yours is a tight budget.

This Takagi heater is also energy efficient, making it environmentally friendly.

The manufacturer offers a ten-year warranty so you can exchange your heater if it doesn’t deliver as promised.

Also Read: How Does A Tankless Water Heater Work?

Parts are guaranteed for five years, so you can be sure that this is a quality piece that will provide exemplary service for many years to come.

Click here to buy it on Amazon.

4. Rinnai RUC98iP

Rinnai RUC98iP

This is yet another Rinnai creation that features in the list of best gas tankless water heaters. Unlike the RUC98iN that uses natural gas, this model runs on propane.

The heater comes in a metallic finish that will fit anywhere in your house.

Additionally, the heater comes without NOx emissions making it great for the environment.

Other notable features include an energy factor of up to 0.96, a maximum BTU of 199,000, sleek modern design.

The heater comes with both concentric and PVC venting options, so it will easily fit in your home, whichever your venting type.

The manufacturer offers a 12-year guarantee of the heat exchanger, so you can expect your heater to serve you well for many years.

In addition, there is a 5-year warranty on parts and a 1-year labor guarantee with the option of extending it to five years.

Click here to buy it on Amazon

5. Noritz NRC661-DV-NG

Noritz NRC661-DV-NG
Noritz NRC661-DV-NG

Noritz is another reputable brand known for its highly efficient water heaters.

The Noritz NRC661-DV-NG is among the most advanced tankless water heaters and the best value for your money.

This heater will effortlessly provide enough hot water in a two-bathroom home.

The fact that it is reasonably priced makes it ideal for those looking for budget natural gas tankless water heaters.

The Noritz NRC661-DV-NG is compact and measures 6.7″ x 13.8″ x 23.6″. The maximum capacity is 6.6 gallons every minute.

This means that you will get enough hot water to run two showers simultaneously, or take a hot shower as the washing machine runs.

This heater can be installed using a standard 40 PVC pipe for a vent. Installation steps are clear, and any handyman can have it up and running in no time at all.

The Noritz NRC661-DV-NG comes with a 12-year warranty.

Click here to buy it on Amazon.

Best Gas Tankless Water Heaters Buyer Guide

If you are looking to buy the best gas tankless water heater for your home, below are some features to consider.

Household size/Needs

A two bedroomed apartment will have a different GPM output when compared to a four-bedroom house.

If your home has only one bathroom, there is no need to invest in a heater that can simultaneously run multiple bathrooms.

The amount of hot water a heater produces depends on its power.

Your heater power of choice should be able to deliver enough hot water to match your expectations.

For a small house, 10,000 BTUs are adequate. Commercial establishments may require power of up to1,000,000 BTUs.

Flow Rate

While the power ensures that you get water at the right temperature, the flow rate will determine the amount of water you get in your hot water taps.

To determine the proper flow rate for your household, consider the number of devices you want to connect to the heater.

For example, if you want to supply all water-based appliances, you are better with a water heater with 9.0 GPM.

For a single hot water faucet, a 1 GPM flow rate is adequate.


Venting is essential for both tank and tankless water heaters.

A sound venting system ensures that hazardous gases are eliminated from your property.

With a proper venting system, you can also get additional intake from the outside whenever necessary.

The best gas tankless water heaters have two venting points that include:

Direct Venting – this Venting needs an exhaust and intake pipe.

The venting pipe eliminates carbon monoxide, among other hazardous gases, while the intake pipe ensures sufficient air intake for your gas tankless heater.

Power Venting – This Venting necessitates an exhaust pipe and a fresh air circuit.


The energy factor will help you calculate the heater’s energy efficiency and cost of operation. Most water heaters come with the energy factor listed.

A quick look at the product description will let you know how much energy is required to optimally run your unit.

Condensing vs. Non-Condensing

Condensing gas tankless heaters are more energy-efficient and easier to install when compared to the non-condensing varieties.

Also, you can use PVC in place of metal with the condensing water heaters.

The non-condensing varieties, on the other hand, are ideal for outdoor placement. They tend to be smaller, cheaper, and perfect for cabins, camping, and mobile homes.


The best tankless water heaters are not necessarily the most expensive. You can get the perfect unit for your home at a reasonable price.

A heater that is powerful enough to service multiple appliances at the same time will cost more than a small, less powerful unit.

Have your home needs in mind and then narrow your search to gas tankless water heaters within your budget.

How to Size Your Gas Tankless Water Heater?

As highlighted above, it is important to ensure that you get a water heater that will meet your home needs in the present and hear future. (Source)

To properly size your water heater, consider the temperature rise and flow rate.

Temperature Rise

Consider the normal water temperature and the output level you desire. On average, tap water gets to about 50F, and most homeowners are looking for water heaters that can raise this level to 115 degrees.

You need to ensure that the heater you choose is strong enough to heat your water to the additional 55 degrees. A less powerful heater will only slightly raise the temperature, and you will often not get the results that you are looking for.

When it comes to temperature rise, you should never compromise. Doing so will only mean that you have to endure lukewarm baths and water that is not hot enough for your other appliances.

Final Thoughts on Best Gas Tankless Water Heaters

Now you have an idea on the best gas tankless water heaters in the market and some of the features that make them stand out.

If you intend to buy one in the near future, you may want to consider any of the options listed above.

Do not forget to take your needs into account when selecting a unit for your home, as highlighted in the buying guide.

You may need to pay a little more for a powerful gas water heater, but considering these can last up to 30 years, you want a unit that will meet your present and future needs.

If you’re yet to decide the best option, then we’d recommend GASLAND Outdoors BS158