Best Tankless Gas Water Heater Reviews 2017

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With the tankless water heaters, you will have the option of buying an electric or a gas water heater. The best tankless gas water heater seem to be a better choice for most people and they tend to last longer.

The main benefit of the tankless water heaters is the fact that you will be able to get hot water at any point when you need it. Unlike the conventional tank water heaters, the tankless gas water heater will reduce energy consumption by about 40%.

In comparison to the electric tankless water heaters, the gas models tend to perform better in cold weather and will spend minimal fuel in to heat up the water. They are also said to be more reliable and can last for a very long period of time.

Top Tankless Gas Water Heater Comparison Chart


Best Tankless Gas Water Heater For Maximum Energy Efficiency

There are quite a number of tankless gas water heaters on the market. Finding the ideal one may be a tough decision for an average person. Here are some of the best models reviewed below, for your consideration.


Rinnai RL94eN Natural Gas Tankless Water Heater, 9.4 Gallons Per Minute – Outdoor


Product Quality and Specification:

Best Tankless Gas Water HeaterThis is a Rinnai tankless gas water heater has the capacity to service a standard household with endless supply of hot water. It has an impressive flow rate of 9.4 gallons per minute, which is quite adequate. This tankless gas water heater has a number of amazing features, which you will definitely love, considering the Rinnai tankless water heater price.

The Rinnai RL94eN Natural Gas Tankless Water Heater comes with a digital controller, which is fitted with an error code indicator. As a result, anytime that the gas water heater is not functioning as required, you can easily tell from the error message it shows.

It is Energy Star qualified, which means that it is energy efficient, which make it an ideal choice for heavy duty use. The efficiency and comfort is maximized by the built in LogicTM recirculation program, through the external pump that cycles at specified temperatures and intervals.

Thus particular model can be used on the go, as it is certified for the installation in mobile homes. The temperature lock feature will prevent any unintended adjustment of the water temperature. The enhanced scale detection is a safety feature, which will reduce any cases of severe damage to this rinnai tankless natural gas hot water heater .

Rinnai RL94eN Natural Gas Tankless Water Heater, 9.4 Gallons Per Minute

Price: $$$$ | Type : Outdoor | Power : Natural Gas | GPM: 9.4 Per Min | Origin : Japan | Item Weight : 46 pounds

Rinnai RL94eN Outdoor Natural Gas Tankless Water Heater Features

Rinnai RL94eN

  • The RL94eN is a tankless gas water heater that is made of metal and has a chrome finish; it is no made of any fabrics.
  • The 9.4 GPM rate is sufficient for a standard household. This means that it can produce 9.4 gallons per minute.
  • There is a digital controller unit, which is fitted with an error code indicator.
  • With an 83% thermal efficiency, this Rinnai tankless gas water heater can be used for the whole house and not escalate the energy bills.
  • It is approved for installation on mobile homes, making it quite diverse and practical for various settings.


Rheem RTG-64XLN 6.4 GPM Low NOx Outdoor Tankless Natural Gas Water heater


Product Quality and Specification:

Best Tankless Gas Water Heater reviewsThe RTG-64CLN is a tankless has water heater with a capacity of 6.4 gallons per minute. This is able to provide simultaneous usage on different faucets at the same time. This is one of the greatest advantages that it has over the other models on the market.

As far as the power goes, the Rheem gas tankless water heater requires 150,000 BTUs. It comes with an energy efficiency of 0.82, which is quite impressive and can be installed conveniently at any place that you may choose. The Rheem tankless hot water heater weighs 54 pounds, which means that you can lift it up and support the weight, while installing it.

You may have bumped in to other types of similar water heaters that use propane, but the difference with this Rheem Natural Gas gas tankless water heater is the fact that it is a methane unit. It has a low NOx function, which will eliminate the need of installing sophisticated venting systems.

It is important to note that this is an outdoor water heater and you would have to install it outside your home. Over and above, the Rheem RTG-64XLN 6.4 GPM Low NOx Outdoor Tankless water heater is the perfect solution for any home that requires a steady supply of hot water.

Rheem RTG-64XLN 6.4 GPM Low NOx Outdoor Tankless Natural Gas Water

Price: $$$ | Type : Outdoor | Power : Natural Gas | GPM : 6.4 Per Min | Origin : USA | Item Weight : 54 pounds

Rheem RTG-64XLN Outdoor Tankless Natural Gas Water heater Features

Rheem RTG-64XLN

  • This is a natural gas tankless water heater system, which makes it convenient for heating water through natural gas.
  • It a 6.4 GPM rate, which means that it has the capacity to produce 6.4 gallons per minute. As such, you can easily get hot water from different faucets, at the same time.
  • The Rheem gas tankless water heater is an outdoor water heater, with a Low NOx version, that eliminates the need for having a complex venting system.
  • There is a remote control included for easier operation of the Rheem tankless hot water heater and also a thermostat wire, which is 10 feet long.
  • To run the Rheem natural gas outdoor tankless water heater you will require 150,000 BTUs of power.


Rinnai V65IN 6.6 GPM Indoor Low NOx Tankless Natural Gas Water Heater


Product Quality and Specification:

Tankless Gas Water Heaters reviewsOur final model to review is the V65EN Rinnai gas tankless water heater, which is a whole house unit. This means that from a single unit, you can be able to service the entire house with hot water. This is quite impressive as you would not have to but multiple units for each faucet, as it is the case with most tankless gas water heaters.

This is the best tankless water heater as it has the ability to produce 6.6 gallons per minute of hot water. However, this is highly dependent on the outdoor temperature. When considering the Rinnai tankless water heater cost, it is important to factor in other attributes that really matter. For instance it is worth noting that this model requires 150,000 BTUs as the power supply.

The Rinnai V65IN Indoor Low NOx Tankless Natural Gas Water Heater is light and has a compact design. The best gas tankless water heater reviews focus on the ease of installation, considering the overall weight. This model weighs 48 pounds, which is easy to lift and install. You will be able to enjoy a wide range of benefits from this water heater and end saving on your energy bills. This makes it the best natural gas tankless water heater on the market.

Rinnai V65IN 6.6 GPM Indoor Low NOx Tankless Natural Gas Water Heater

Price : $$$ | Type : Indoor | Power : Natural Gas | GPM : 6.6 Per Min | Item Weight : 49.6 pounds

Rinnai V65IN  Indoor Tankless Natural Gas Water Heater Features

Rinnai V65IN 6.6 GPM

  • The Rinnai gas tankless water heater has the capacity to deliver hot water of up to 6.6 gallons per minute.
  • This model is known as a whole house unit, which saves you the cost of having to install different units on different taps. When you install this model, you can get hot water in the entire house.
  • There is an enhanced scale detection on the Rinnai indoor tankless water heater, which will alleviate the possibility of serious and extensive damage.
  • The Rinnai V65IN tankless water heater is certified for installation in manufactured homes, which are also known as mobile homes.
  • It has an energy factor of .82 for propane and natural gas.


Essential Factors to Consider When Buying Tankless Gas Water Heaters


When you go out looking for a tankless gas water heater, the objective should be to find the best tankless gas water heater. In order to achieve this, here are some key considerations.

Gas, Electric, or Propane:

In warm climates, an electric tankless water heater would be ideal, but for cold regions, you will need a gas tankless water heater. When you choose a tankless gas water heater, you should consider the BTUs as well.

Capacity and Size:

The general size and capacity is determined by the amount of hot water that you need. You should consider the temperature of the region so as to get the right size to heat the water enough, without losing GPM.

Family Size Peak Demand Output Requirement
2 People 45 - 55 Gallons
3 People 55 - 65 Gallons
4 People 65 - 75 Gallons
5 People 75 - 85 Gallons
6 People 85 - 100 Gallons
7 People 100 or More Gallons

GPM- Gallons Per Minute:

When searching for the best tankless gas water heater, you should consider the gallons per minute. This refers to amount of hot water that the system can deliver in a minute. The demand for hot water in your house, is what influences the ideal GPM.

Water Device GPM- Gallons per Minute
Kitchen Faucet 2.5
Low Flow Kitchen Faucet 1.5 – 1.8
Bathroom Faucet 2.2
Shower Head 2.5 – 5.0
Low Flow Showed Head 1.0 – 2.0
Washing Machine 3.0 – 4.0
Dish Washer 2.0 – 3.0

Price and Warranty:

Compare different models so as to buy the one with the best deal as far as the price goes. You should be keen on the warranty period, as this is a strong indicator of the manufacturers’ confidence in the product.

If, your are looking for more information about “How to Choose the Best Water Heater” Check Here

Other Features:

  • When looking for the best tankless water heater, consider the type of display it has. Digital display is far much easier to use.
  • The temperature range is also an essential consideration, according to your preference.
  • It is important to consider the over energy efficiency rating, which will help you cut on the energy costs.
  • Consider the features and technology. The recirculation technology will ensure that you have sufficient hot water, at any given time.


Final Thoughts:

Finding the best tankless gas water heater is not so difficult, when you know what you are looking for. With the information provided above, you should be able to find a tankless water heater, conveniently. We have done the best gas tankless water heater reviews to make the process easier.

In our recommendation, the Rinnai RL94eN Natural Gas Tankless Water Heater stands out from the rest. With the ability to provide up to 9.4 gallons of hot water per minute, you will find this model to be quite useful.

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Hey there, my name is Erik Larry, glad you found your way here. With my great experience with water heaters, you will be able to learn a whole lot on Sweet Home Insider. I have been installing and maintenance the water heaters for a number of years, and as a result, I have gained vast experience in this field. If you have any questions or comments, feel free to get in touch.