Best Gas Tankless Water Heaters Reviews | Guide

Best Gas Tankless Water heaters 2020

Tankless water heaters are great blessings of technology. Back then, people used to use tank water heaters for their use at home for bathing and other home chores that require hot or warm water. One of the most significant characteristics is that they do not occupy extra space at your house and are pretty adjustable. They are affordable, slim, and sleek, and automatic.

Tankless water heaters are basically liked for their instant water supply of freshwater at the required moment. When you turn the heater and the faucet ON, the water flows from the pipes and provides you with an instant supply of gallons of water.


Product images




Rheem RTGH-95DVLN Tankless Gas Water Heater


9.5 GPM

Rinnai RUC98IN Tankless Gas Water Heater


9.8 GPM

Eccotemp i12-NG Tankless Gas Water Heater



Takagi T-H3-DV-N Tankless Gas Water Heater


10 GPM

Noritz NRC66DVNG Gas Water Heater


6.6 GPM

Best  Tankless Gas Water Heaters List and Reviews

We have two kinds of tankless water heaters, Electric tankless water heaters, and Gas tankless water heaters. While using gas tankless water heaters, you can save so much of your bills. Let’s have a look at the best and top reviewed tankless water heaters.

1.  Rheem RTGH-95DVLN Gas Tankless Water Heater:

Best Gas Tankless Water heaters
Rheem RTGh-95DVLN tankless gas water heater

This product is our top pick of today as Rheem tankless gas water heater has placed itself among one of the most significant products. It is reliable and has introduced us to many new advanced features. You can have hot or warm On-Demand water whenever you want. This water heater is 94% energy and can help you save your bills. Not only this, but it also has a feature of freezing protection so the change of temperature outside should not affect the system of the heater.

Let’s have a look at its features with all advantages and disadvantages.

This tankless water heater offers the highest flow rate of 9.5 GPM. This number refers to the fact that you can run two to three showers with laundry, dishwashing, and other home chores without having a slight problem of water shortage which is exciting for big households and families. Isn’t it?

The venting of the Rheem tankless heater can be placed both indoor and outdoor. This heater is equipped with advanced qualities and has the ability to keep the heater’s system at check. If there arises a problem related to venting or gas supply, it will automatically warn the user to take precautionary measures.

This water heater is easy to use as it has a sleek body with advanced features which makes it easy-going.


  • High flow rate
  • Perfect for big families
  • Easy to be installed
  • Freezing protection


  • A bit expensive
  • Little noisy

2.  Rinnai RUC98IN Gas Tankless Water Heater:

The second product in our list is Rinnai which is a gas-powered indoor tankless water heater that has secured 4.5 stars out of 5 on Amazon. This water heater is energy efficient and one of the most popular ones in the market.

Best tankless gas water heaters
Rinnai RUC98IN tankless gas water heater

This has a small size as tankless water heaters do not have tanks to store water in. You can place it anywhere in your house and it will supply fast hot water when you will turn ON the tap.

Rinnai provides us with 9.8 gallons of water per minute which means you can open faucets, 2 to 3 showers, can do laundry and other house chores without facing any shortage of water. Isn’t it amazing?

This unit comes with advanced features through which you can set the temperature of your choice to water and it will provide instant hot on-demand water



  • Friendly for big households
  • Advanced features
  • Size friendly
  • Consumes less energy


  • Temperature can be dropped for a few seconds during multiple uses

3.  Eccotemp i12-NG Gas Tankless Water Heater:

Eccotemp is a friendly name when you visit the market in search of quality products with numbered features. With the pretty sleek and slim size, it can be placed anywhere in your house.

best tankless gas water heaters
Ecotemp 12-NG tankless gas water heater

Eccotemp is not as powerful as our top picks but we also need to know about products that can be placed in small houses with one single-family or apartment. It has a flow rate of 4.8 gallons of water per minute. It is pretty affordable and can be used for small residences with one or two bathrooms and other home chores.

It is designed to use indoor as it contains LED Display and automatic controls. The LED has made it pretty easy to understand and use the system.

Tankless water heaters do not occupy much space than the tank water heaters which required to have a separate corner in your house.



  • Stylish design
  • Good flow rate
  • Automatic temperature control


  • Only for small houses

4. Takagi T-H3-DV-N Gas Tankless Water Heater:

The Takagi tankless water heater has a compact design and offers a continuous flow of water which makes it easy to be used in big households rather than small. It also offers a warranty of 15 years and is not noisy at all. The only thing that might be troublesome will be that it requires professional hands for venting.

best tankless gas water heater
Takagi T-H3-DV-N tankless gas water heater

By providing an insane amount of 10 gallons of water per minute, Takagi is your go-to product if you own a big house and searching for a tankless water heater. It is a perfect product for both commercial and residential use.

As other hyped products, it comes with advanced technology including a self-modulating heat mechanism and anti-freezing capacity which informs and alarms the owner before any disaster.

This product as other tankless water heaters has a pretty small size and weighs only 60 pounds which means that it can be installed anywhere in the house.



  • Ideal for large families
  • Does not make noise
  • Size


  • Complicated installation

5.  Noritz NRC66DVNG Gas Tankless Water Heater:

best gas tankless water heater
Nortiz NRC66DVNG gas water heater

One of the most significant features this water heater has is when there is a power outage and you are in need of water, you can turn ON the battery it offers which makes it more appealing than its competitors.

It has a body made of Copper which is much thicker than the bodies of traditional water heaters. It offers 6.6 gallons per minute as maximum. It serves the buyer’s safety features including flame sensors, freeing sensors, and temperature control. It also offers 12 years of warranty so if you find any problem, you can contact the company.



  • Ideal product for smaller families
  • Provides temperature controller


  • Creates little noise when turned ON


The only thing a little challenging is the installation of these heaters at your house but this is not worrisome as you can take the help of a professional to get it done. Tankless water heaters are easy to use with various characteristics and qualities including the instant supply of on-demand water, space savers, and is energy efficient. We all want a product which can help us in many ways and this product has qualities of its own.

Frequently Asked Questions FAQs

How much money can I save with a gas tankless water heater?

Depending on the product you are buying and the budget you are storing, you can save 6% to 60% of your energy bills as it does not consume much energy all the time but only when needed. Here the question arises that how? The answer to this question is that it does not have a tank to store water in it, neither does it require to be turned ON 24/7. It only works when it is required.

Do high altitudes affect my gas tankless water heaters?

It is told to us by many people and has some truth inside it too. When you place your heater for any altitude over 4000 feet, it will start to lose its efficiency the higher you place.

Will one gas tankless water heater be enough to heat my entire home?

Well, tankless water heaters are a one-time investment so you should invest your money in a product that can benefit you and your family entirely. You should have a look at all the products we have discussed as most of our products are offering flow rates for big households. Yes, one right choice can benefit you for a long time.


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