Best Gas Water Heater-Energy Efficient Gas Water Heater Reviews

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Water heating is all about raising the temperature of a given volume of water under certain conditions. It has to do with the transfer of heat to the fluid. The heat needed to perform the task is gotten from an energy source, and this energy source can be fuel, electricity, or gas. Here, we would be focusing on the gas water heaters available in several marketplaces. Lets Discuss, best Gas Water heater.

Different types of gases power gas water heaters. While some make use of propane, a few others use butane and natural gas. The choice of a gas depends on its physical and chemical properties. A typical gas water heater comprises a pressure relief valve, a drain valve, a gas burner, a discharge pipe, and a dip tube. It can also have a tank depending on its type – tanked or tankless.

This device provides steady and continuous hot water while being powered by a gas supply. It is designed for use domestically. Our gas water heater reviews help you to choose the best ones. However, some of these types of heaters now find outdoor relevance. Gas water heaters are the most popular type of water heaters in the United States of America and across Europe since natural gas is readily available in these regions.


Eccotemp Natural Gas Tankless Water Heater

Eccotemp propane tankless water heater

This Eccotemp Natural Gas Water Heater makes use of natural gas and has a flow rate of 3.5GPM. It is made for indoor use, and it is perfect for a small apartment or cabin. It features a digital temperature display, and it is very compact. The weight of this gas water heater is 29 pounds, and it has a product dimension of 4 x 15 x 24inches. The electrical specification for this heater is 120V, 1.07A. It has a heat output of 4W. The unit comes with a 2-year limited warranty, and it does not need a battery. The minimum operating water pressure for this heater is 14PSI.


  • Digital temperature display.
  • Compact unit.
  • Space-saving and portable.
  • Easy to clean.
  • Impressive heat output.
  • Fast warming.
  • Very durable.


  • May not function optimally in a bigger home.
  • Water temperature knob is not easy to adjust.
  • Manual operation.

Eccotemp propane tankless water heater

Eccotemp propane tankless water heater

This heater uses propane as a source of energy. Eccotemp propane tankless water heater features a horizontal vent kit, and it is made for indoor use. It is a manually operated gas water heater which means that you have to be in close contact with the heater before any adjustments can be made. It is powered by a safe electronic ignition system and fits perfectly into a standard 120V electrical outlet.

This feature means that there is no energy loss. It has a flow rate of 4.0GPM and works well in a small space. The heater weighs 33 pounds, and it has a product dimension of 29 x 17 x 11 inches. It is rectangular in shape and is backed by a 2-year limited warranty. Maximum operating water pressure is 89PSI, and it does not make use of a battery. The electrical requirement for this gas water heater is 120V, 60Hz, 2A.


  • Compact design.
  • Energy-efficient.
  • Extremely space-saving.
  • Attractive design.
  • Digital temperature display.
  • Minimal noise output.


  • Temperature adjustments can only be made manually.
  • May not work well in freezing weather.

Camplux portable outdoor gas water heater​

Camplux portable outdoor gas water heater

This portable gas water heater has a minimum operating water pressure of 2.8PSI. It has a simple design and a foldable handle so that it can be carried easily. The maximum temperature rise for the heater is 8 degrees Celsius, and the flow rate is 1.58GPM. It also features a flame failure device; oxygen depletion safety gets shut-off to ensure protection and anti-freezing protection. Also, it helps you reduce energy and electricity costs massively, and it has a low water pressure ignition. The thermal efficiency of this gas water heater is 88.5%. It is a gas water heater designed for both indoor and outdoor purposes. Hence, you can take it to the campsite. It has a maximum power output of 34000BTU/hr. Moreover, it weighs 15.43 pounds. This heater has a product dimension of 11.6 x 4.3 x 17.3 inches. It is a wall-mounted unit that makes use of a battery.


  • Sleek design.
  • Carry handle.
  • Portable and space-saving.
  • Suitable for outdoor use.
  • Lightweight and space-saving.
  • Energy saver.


The hose is not durable.

Takagi propane tankless water heater

Takagi propane tankless water heater

This Takagi propane tankless water heater is designed for indoor use. It has a flow rate of 10GPM, and it guarantees instant hot water. Its safety features are computerized, and it is powered by natural gas. This heater can conveniently plug into a 120V electrical outlet, and it weighs 59 pounds. The product dimension is 11.2 x 17.8 x 24.9 inches, and it produces no emissions. It is designed for indoor use only.


  • Energy-saving.
  • Compact.
  • Space-saving.
  • Sleek design.
  • It has computerized safety features.
  • High heat output.


A few issues with its switch and igniter.

Rinnai natural gas tankless water heater, Rinnai RUC98iN​

Rinnai natural gas tankless water heater

This natural gas water heater has a maximum heat output of 199,000BTU/hr. It is to be installed indoors, and it has a PVC and concentric venting option. This unit is to be plugged into a 120V outlet, and it does not make use of a battery. This heater has a flow rate of 9.8GPM and an item weight of 82 pounds. The product dimension is 10 x 18.5 x 26 inches, and it is made from quality materials. It comes with a pressure relief valve.


  • Different venting options.
  • Attractive design.
  • Energy-saving.
  • Impressive safety features.
  • Great tech support.
  • Adequate hot water supply.


No digital control.

Camplux propane gas water heater​

Camplux 10l outdoor tankless propane gas water heater

Camplux propane gas water heater​ helps you save much gas, especially in winter. It has an anti-freeze protective mechanism and overheats the protective device. The maximum power output for this heater is 68,000BTU/hr. And an energy-saving efficiency of 11.5%. With this heater, a continuous supply of hot water is assured. A gas regulator and adapters are included in the package. This unit has a flow rate of 1.6GPM, and it is to be plugged into a 12V outlet. It is rectangular in shape, and it is made from quality iron and copper materials. The maximum operating water pressure for this heater is 110PSI. It weighs 18.08 pounds and a product dimension of 21.6 x 12.9 x 8.3 inches. It is wall-mounted, and it is designed for indoor and outdoor use. The thermal efficiency of this gas water heater is 88.5%.


  • Impressive safety features.
  • Portable and space-saving.
  • High thermal efficiency.
  • Easy to maintain.
  • Reasonable price range.
  • Quiet in operation.


No remote control.

VEVOR 18L Tankless propane hot water heater

VEVOR 18L Propane Hot Water Heater

Tankless propane hot water heater makes use of liquefied petroleum gas as a power source. It features an anti-rust stainless steel case and a clear LED display. To ensure safety, it also has multi-level protection. We are glad to inform you that its made from quality copper and stainless steel material, and tested for safety and quality. It makes use of propane gas, and it can start at low pressure. The flow rate of this heater is 4.8GPM, and it has a power rating of 36kW. It is a sturdy wall-mounted unit. The weight of this heater is 18.9 pounds, and it has a product dimension of 16.5 x 8.7 x 29.5 inches. No battery is included, and no battery is included in the unit. Also, it features a showerhead kit, and it has a capacity of 18L. It has overheat and anti-freeze protection. 


  • Sturdy unit.
  • Fine design.
  • Space-saving and portable.
  • Impressive heat output.
  • Effortless control.
  • Premium quality.


Cannot be operated digitally.

Rinnai indoor tankless water heater ​

Rinnai indoor tankless water heater

Rinnai indoor tankless water heater makes use of natural gas, and it is made for indoor use. It has impressive digital and mobile app features that add to the comfort and convenience of controlling this heater. The flow rate of this heater is 6.5GPM, and it has an item weight of 49.6 pounds. There is no battery included, and it does not need a battery. Product dimension is 13.9 x 8.8 x 23.6 inches. It has a timer that allows you to set how long the heater should work. There is a 10-year warranty on the heat exchanger and a 1-year warranty on labour. Due to its easy control features, it is straightforward to operate this gas water heater.


  • Remote control and mobile application features
  • Lovely design.
  • Sturdy unit.
  • Not hard to maintain.
  • Durable and dependable.
  • Reasonable price


It requires a unique vent system.

Rinnai outdoor tankless water heater

Rinnai outdoor tankless water heater​

This unit made for outdoor use. can be controlled remotely through a mobile application. It does not come with a battery, and it does not require a battery. It has an impressive flow rate, and you will never run out of hot water with this heater. There is a 5-year warranty on its parts and a 10-year warranty on the heat exchanger. The weight of this unit is 47.4 pounds. The product dimension of this gas water heater is 13.8 x 6.8 x 20.9 inches. This water can supply 6.6 gallons of hot water in 60 seconds. It is inexpensive and enjoyable. Installing this unit helps you reduce your electricity and energy bill. It is an outdoor unit.


  • eautiful and attractive design.
  • Not difficult to install.
  • Can be controlled remotely.n.
  • Space-saving and portable.
  • High heat efficiency.
  • Impressive flow rate.
  • Energy-saving.


  • Electrical instructions aren’t easy to comprehend.
  • Not very durable.

Eccotemp gas tankless water heater

Eccotemp gas tankless water heater

This heater makes use of natural gas. It is an outdoor unit with impressive performance levels. This gas water heater does not need venting, and this makes it very easy to install and setup. The unit comes with a temperature and pressure relief valve, and it is CSA certified. It can deliver 6.8 gallons of water in sixty seconds. You may not notice the presence of this heater due to its quietness in operation. It doesn’t waste gas because it only activates when putting into use. It does not make use of batteries. Hence, no battery is included in the package. A 5-year limited warranty backs this gas water heater.

The heater weighs 38 pounds, and it has a product dimension 22 x 15 x 6 inches. It works on a 110V rated electrical output. Note that this heater is designed to be powered by natural gas, and no other type of gasses should be used. This violation may lead to the destruction of the unit. Make sure you consult a professional plumber for the installation of this unit. This decision will help to avert any problem that may arise.


  • Easy to install.
  • Beautiful design.
  • Space-saving and portable.
  • Impressive flow rate.
  • No safety concerns
  • Easy to maintain.


No digital controls.


There is a common saying that learning safety the hard way is terrible. It’s not helpful to learn safety by accident. Instead of this, there are ways to get rid of safety concerns, especially with a gas water heater. Here are a few safety tips:

Ensure proper ventilation:

Fumes should go outdoors and not remain indoors, and this explains why water heater vents should be free of dips. Fumes should be diverted up and out of the house. Hence, the size of the vent and that of the diverter must be the same. Asides that, vents mustn’t be loose, they should be appropriately screwed.

Perform a routine check on temperature/pressure relief valves:

Temperature/pressure relief valves can fail at any time, thereby causing the water heater to explode. You must ensure you check them at least twice a year and when you notice any irregularities, do well to replace them. The consequences of a failed heater are enormous; it can lead to damage to properties, bodily injuries, or death of anybody close to the radiator.

Remove fire hazards near your heater:

Do not bring any combustible or flammable items close to the gas water heater, especially if it has a tank. Things like papers, canisters of gas, and garbage should be kept far away. Leakage can occur at any time, and this will be highly catastrophic.

Install a carbon monoxide monitoring device:

As stated ab initio, fumes should go outdoors and not come inside the house. You may not notice this on time, and it may cause severe damage to your health or even lead to death. Carbon monoxide is very harmful, and it kills several hundreds of people each year. It is a poisonous gas associated with combustion appliances like heaters and burners.

Always check the temperature settings:

Gas water heaters are designed to meet the heating needs of a house based on how big or small it is. For a gas water heater that makes use of a tank, the size of the container must be commensurate with the temperature and pressure output. Usually, it is best not to set the temperature of the water heater above 120°F. Before spending on a water heater, reach out to professionals to check if it is the perfect size for your home.

These are just routine safety tips; if you feel your gas water heater is faulty or needs to be checked, do well to call an assessment or maintenance engineer. Apart from ensuring your safety, the heater will also last longer.


How long does a gas water heater last?

For emphasis, the lifespan of a gas water heater depends on the method and frequency of use. Maintenance also plays a vital role. However, a typical gas water heater should last for about 8 to 12 years.

How much does it cost to replace a gas water heater?

A right water heater should not be expensive, although quality, features, and functionality are the key determinants of price. Also, the brand and name of the manufacturer are crucial as some product manufacturers have carved a niche for themselves in the industry. However, we must point out here that the average cost of a tankless gas water heater is relatively higher than what a tank water heater would cost whether or not installation fees are included.

What are the best gas water heaters?

The best gas hot water heater is those with some or all of the features listed in this text. If you are still not sure of what to buy, you can choose from any of our top ten picks.

Where can I buy a gas water heater?

Anywhere. You can buy a gas water heater anywhere, electrical, and home heating appliances are sold. They are also readily available in online and retail stores. You can also make your purchase from a mall or a supermarket.

Who needs a gas water heater?

The truth is that everybody needs it since everybody makes use of hot water in the cold season. There are no exceptions. Whether young or old, we all make use of hot water to cushion the effect of cold or to sterilize certain things. A gas water heater is not made for persons of a particular age, race, or group. However, we must sound this note of warning. Not everybody should operate a gas water heater. Children and minors should not have access to it for the risk of a burn or inflammation of gas.

How safe is a gas water heater?

For now, there are no safety concerns associated with the use of a gas heater. Gas heaters have passed safety tests and are recommended for use domestically and industrially. However, it must be said that safety begins with you. Installation of this device to the gas outlet should only be done by a professional and when you notice something is wrong, fix it. Do not manage the heater.

How long does it take to install a gas water heater?

It depends on the experience and expertise of the plumber. That said, a gas water heater should not take long to install. Two to three hours is excellent, assuming other things are okay.

Do I need a permit to install a water heater?

You may need local authorities to grant you an approval for installation. Getting a permit is primarily for regulatory and compliance purposes. It also ensures safety.


Gas water heaters have a simple principle of operation. Moreover, the law of operation of a gas heater is very similar to that of an best electric water heater review. The significant difference between the two is that the electric water heater makes use of 2 heating elements while a gas water heater makes use of a gas burner.

A gas water heater makes use of the heat rising principle for the conversion of cold water to hot water. A gas water heater comprises of the following components:

  • A heavy tank made of metal. It can hold 40 to 60 gallons of water effectively. The interior part of the tank has a protective water liner while its exterior is insulated with a non-conducting material like polyurethane foam.
  • Dip tube: Serves as a passage for the entrance of water into the valve. It is located at the top of the tank.
  • Shut-off valve:

Its primary role is to discontinue the flow of water into the pipe. It is located outside the unit.

  • Heat-out pipe: It creates an escape route for hot water. It is an avenue for the passage of hot water out of the heater.
  • Thermostat: It is used for the control of temperature and thermometer.
  • Heating mechanism: A burner and chimney supply heat to the water inside the tank. This system is different from an electric water heater that makes use of a heating element.
  • Drain valve: A drain valve helps to ensure easy maintenance of the gas water heater. It is located near the bottom of the heater, and it creates an avenue for the removal of sediments and impurities.
  • Pressure relief valve:
  • The pressure relief valve of a gas water heater helps to keep the pressure of the radiator within a safe range. It is needed to prevent the explosion of the heater.
  • Sacrificial anode rod: The anode rod fights against corrosion. It helps to prevent rust from building inside the heater. It is usually made from magnesium or aluminum materials.


There are some qualities a right gas water heater should possess, and these are the things that you should go for looking out.

Compact design:

You don’t want to buy a gas water heater that will take up too much space. A right gas water heater should not be bulky. We advise you to go for a space-saving unit. It helps preserve space for other items or devices that you may wish to buy in the future.

Beauty and style:

The first set of gas water heaters produced were just big cylindrical tanks that weren’t attractive or eye-catching. However, times have changed, and new models are being manufactured. The right gas water heater should be colorful and beautiful. Don’t buy something ugly.

Heat and thermal efficiency:

You are making the purchase primarily because you want an adequate ho water supply. A right gas water heater should be able to guaranty that. Watch out for the output rating and thermal efficiency of the heater. It must be perfect or near-perfect.


While we still have some manually operated gas water heaters in the market, there are so many heaters that can be controlled remotely and have a digital setting. This feature brings added comfort and ease of operation because you do not have to stand up all the time to switch on the heater or adjust its temperature.

Gas consumption:

A right gas water heater should not consume too much gas. Please must note that it must be gas efficient. It makes no sense refilling gas cylinders when you haven’t used the heater for long. Fuel economy is key. You will spend less and save more.


You cannot make a correct gas water heater choice if you do not know or have an idea of what the device looks like and what it should do. We believe we’ve been able to take care of that in this article. If you are unsure of what to buy, choose from any of the gas water heaters listed here. These are some of the best and most sought-after heaters in the market today. If you decide otherwise, make sure the heater you choose ticks all the boxes of a suitable gas water heater as outlined here.

Remember, safety is critical. Make sure you maintain your heater correctly. This consciousness will guaranty the prolonged use and security of lives and properties. Also, be sure to contact only a qualified and certified plumber for the installation of the unit. Any error could be costly and disastrous.