Best Rheem Tankless Water Heater Reviews & Buying Guide in 2020


Best Rheem Tankless Water Heater Reviews & Buying Guide in 2020 1Since tankless water heaters are now the basic necessity of every household, they are becoming increasingly popular in the market. Due to the rising demand, a whole lot of brands have come up with a diverse range of water heaters. These tankless water heaters feature distinct characteristics and are designed to ease people’s routine tasks by providing them with instant hot water.

Rheem is one of the most trusted and well-known hot tankless water heater brands. This brand has various types of tankless water heater like electric, gas, solar-powered as well as heat pumps are part of Rheem-Ruud HVAC group; which one of the leading manufacturers of cooling and central heating products used in commercial and residential applications.

In the below Rheem tankless water heater reviews explores the popularity of this brand, its models, main features as well as specs of their top tankless water heaters.

History Of Rheem Tankless Water Heater

Nowadays, Rheem is one of the most established brands in the world when it comes to water heating technology.

Rheem Manufacturing Company was established in 1920 and the hot water heaters were among their first products. Then they bought the Ruud Manufacturing Company that later built the first automatic and storage tank-type water heater.

Rheem has its headquarters in the United States, Mexico, and Canada. However, its wide range of products is well-known all over the world.

Rheem is the only company which offers you a complete line of the innovative water heating technology that includes solar water heater products, tankless water heaters, and traditional water heaters.

The company’s tankless heaters are particularly known for their worry-free and convenient performances.

Let’s take a look at the Rheem tankless water heater reviews.

Why Should You Choose Rheem Tankless Water Heaters?

whyRheem Company prides itself on being capable of providing tankless water heaters which are able to meet different hot water needs for different homes. Whether you’ve got a vacation home with numerous luxury bathrooms or you have a modest apartment with 2 bathrooms, there’s always a Rheem tankless heater for you. Rheem usually features 2 lines of the tankless heaters: the Performance Line and the Professional Line.

Rheem understands the need for a compact tankless water heater by most homeowners. After all, one of the obvious benefits of having a tankless water heater is working without the space-consuming and massive water tanks which traditional water heaters usually have. Rheem tankless heaters are approximately the size of the regular medicine cabinet. As a result, they will free up a lot of the floor space irrespective of where you want to install them.

Tankless water heaters normally have the built-in condensing heat exchangers that are made of highly-durable stainless steel. This prevents heat loss and also leads to up to 94 percent thermal efficiency. At the maximum performance, some of the Rheem’s tankless heaters can supply over 9 gallons of the hot water per minute. The company also boasts the self-diagnostic system that allows for easier operation and installation. The temperature setting on the water heaters is shown on its digital display thus enabling you to prevent overheating.

Top 5 Best Rheem Tankless Water Heater Reviews

5 Best Rheem Tankless Water Heater ReviewsRheem is a very solid company that makes some of the best water heaters in the world today. With this Rheem Tankless Water Heater Reviews, you will find the best Tankless water heaters from Rheem so as to choose the one that fits your home needs.

Therefore, if you’re looking for the best Rheem Tankless Heaters, here are the top 5 in the Rheem Tankless Water Heater Reviews:

1. Rheem RTE 13, 4 GPM  Electric Tankless Water Heater

Rheem RTE-13 ReviewRheem Company is one of the leading providers of electric and gas tankless water heaters. The Rheem RTE 13 electric tankless water heater is energy star certified and is widely known for its energy-efficient system.


  • Heat exchanger
  • 4.0 GPM
  • LEDs indicate active element and standby mode
  • Compact design


  • Their warranties are only valid if you install the heater by a licensed technician. This is not so much of a negative side rather it shows that they are really professional.

The company’s electric tankless heater, the Rheem RTE 13 electric tankless water heater has been getting much appreciation and attention from all corners thanks to its space-saving design as well as the ultimate performance.

2. Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Natural Gas Tankless Water Heater Review

Rheem RTGH 95DVLN ReviewRheem RTGH-95DVLN 9.5 is one of the top-notch water heating solutions that run on natural gas and also provides the unlimited supply of hot water to your whole family. It is simple to use a tankless heater that usually comes with its own remote control panel.

Rheem RTGH-95DVLN tankless water heater is an ENERGY STAR rated water heater. This Rheem heater has a two-pipe direct vent system that connects up to 5 feet of 2” PVC pipe or 35 ft of 3” PVC pipe.


  • Energy efficiency
  • Intelligent electronic controls
  • EZ-Link cable available
  • Low Nox model


  • Some of the consumers have reported that the warranty of the heater is not up to the mark. But you need not worry about it, because the durability of this unit is really great.

This is an amazing unit, probably on the best tankless water heaters in the market.

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

Rheem RTG-64XLN 6.4 GPM Low NOx Outdoor Natural Gas Tankless Water Heater ReviewRheem RTG-64XLN is a well-known brand that is popular worldwide for its innovative, budget-friendly, efficient and eco-friendly outdoor/ indoor water heating solutions.

The Rheem RTG-64XLN’s output is around 6.4 gallons per minute and is low on the Nox emissions. With this heater, you can easily get hot water for 2 bathrooms.

Furthermore, you can also use it from approximately 10 feet distance and also through the use of remote control. The fact that this is an outdoor heater that runs using natural gas proves that there are no safety risks which are involved. The Rheem RTG-64XLN is a very reliable outdoor tankless water heater.


  • 6.4 GPM
  • 82% energy efficiency
  • Ultra Low NOx burner
  • Built-in electric blower


  • It is also an outdoor tankless water heater. Therefore, it is not suitable for being used indoors.

People who need hot water instantly whenever the need arises without compromising on the energy utility and consumption bill should have this amazingly efficient heater.

4. Rheem RTG-64XLP 6.4 GPM Low NOX Outdoor Propane Tankless Water Heater Review

Rheem RTG-64XLP 6.4 GPM Low NOX Outdoor Propane ReviewThe Rheem RTG-64XLP tankless water heater is among the most popular Tankless Water Heaters from Rheem Company. This particular model from Rheem has been rated as an Outdoor model and it usually runs on Propane.

It is capable of producing more than 6.4 gallons every minute and the water heater also comes with the Rheem’s warranty. Rheem provides you with an innovative and new tankless water heater that provides a continuous supply of hot water. It is also energy efficient and has a space saving design.


  • 6.4 GPM
  • Next Generation Burner Technology
  • EZ-Link cable available
  • High-altitude capabilities


  • Since it is an outdoor tankless water heater, you cannot use it indoors.

Rheem tankless propane water heater offers you the perfect solution for heating your water while at home. With Rheem RTG-64XLP tankless propane water heater you will never run out of hot water at any time.

5. Rheem RTG-64DVLN Prestige Low NOX Indoor Direct Vent Condensing Natural Gas Tankless Water Heater Review

Rheem RTG-64DVLN ReviewThe Rheem RTG-64DVLN prestige is a Natural Gas powered tankless water heater that has been specifically designed to be used indoors. It is space saving and highly energy efficient. As a result, it’s suitable for both large and small families.

The unit usually comes with the UMC-117 remote control as well as the EZ-link cable that can connect 2 tankless heaters and then let them operate as a single unit. The heater is highly advanced and it’s also equipped with the intelligent electronic controls which optimize its user-friendliness and reliability.


  • 6.4 GPM
  • Concentric Vent System
  • The efficiency rate of 82 percent


  • You may have to re-run the entire gas lines in your house to have this unit work. You might think this is a problem, but it is worthwhile for a heater as good as Rheem RTG-64DVLN Prestige.

Rheem RTG-64DVLN prestige natural gas heater is an affordable and reliable solution for fulfilling all your indoor hot water demands in all kinds of weather.


Rheem tankless water Heater Company carries a wide range of models for almost any home. You can find a very wide selection of their gas-powered models, solar and electric models, heat pumps, tankless and even the storage tank type. All models from this brand are of high efficiency and have an energy factor of more than 0.82 for Energy Star approval.

The Rheem tankless water heaters also provide the convenience and comfort of having continuous supplies of hot water. Their models are great hot water solutions for homes that have busy families as well as homes with luxury bathrooms.

To sum it up, as shown in the above Rheem tankless water Heater reviews, Rheem Company is specialized in producing great tankless water heaters that will meet all the demands of any homeowner.

Best Rheem Tankless Water Heater Comparison Chart


Free Trial








Isolation valves

Compact design

Copper Heat Exchanger

On-unit temperature control with LED indicator

Standard Stand by mode

Warranty: 1 year Parts,10 years Heat exchange, only vaild if installed by a licensed technician

9.5 GPM

Energy Factor of .95

Freeze protection to -30°F

Low Nox Versiond

 Stainless steel as condensing heat exchanger, 2 piped vent 

Built-in electric blower

Intelligent electronic controls for safety and Energy Efficiency

6.4 GPM

82% Energy Efficiency

150,000 BTU

Ultra Low NOx burner

Built-in electric blower

Freeze protection to -30 °F

Intelligent electronic controls

6.4 GPM

High-altitude capabilities

EZ-Link cable available

Low Nox Version

Next Generation Burner Technology

UMC-117 remote control

Propane Tankless Water Heater

6.4 GPM

 82% Energy Efficiency

Concentric Vent System

Corded Electric 

UMC-117 remote control

Lower Nox emission

10-Feet of thermostat wire

Don’t know which heater will fit at your home? Call us anytime and we are ready to assist you.