Best Rheem Tankless Water Heater Reviews

If you are searching for the best tankless water heater, then Rheem is sure to be on your list. From indoor to outdoor, from commercial to industrial, Rheem tankless water heater has been a well-known machine for most people in the United States.

About Rheem

The brand of Rheem is founded in 1925, it is a single leading brand on producing cooling, heating, water heating, commercial refrigerators, and spa heating, etc. Among whole North America, it is the biggest manufacturer of producing tankless water heaters.

Founded by brother Richard and Donald Rheem, the brand Rheem started with producing steel drums and other metal products. It began to produce water heaters, boilers, and tanks in full scale in 1930. In the 1950s, Rheem started its business in HVAC products and from then on, the brand quickly entered into commercial boiler markets. Stepping from industry-leading technology to next-generation energy-efficient, Rheem is on the way to produce the best quality and most energy-efficient tankless water heaters.

In order to help you choose the most suitable product, here we made a detailed best Rheem tankless water heater reviews for you.

Top 6 Rheem Tankless Water Heater of 2019

ProductsPower source
#1. Rheem RTEX-13
rheem rte 18 tankless water heater review
Electric
#2. Rheem RTEX-18
rheem electric tankless water heater
Electric
#3. Rheem RTG-95XLN Outdoor
best rheem gas water heater
Gas
#4. Rheem RTG-64XLN Outdoor
rheem gas hot water heater reviews
Gas
#5. Rheem RTG-84XLN Natural Gas
best rheem gas water heater
Gas
#6. Rheem RTG-95XLP Outdoor
best rheem gas water heater
Propane

Rheem Electric Tankless Water Heaters Reviews

Electric tankless water heaters are powered only by electric, it is normally installed in the bathroom. Rheem Rte 7, Rte 9 and Rte 13 electric tankless water heaters are normally used in the past years.

Followings are two best Rheem electric hot water heaters reviews:

1. Rheem RTEX-13 Tankless Water Heater

Rheem RTEX-13 is one of the most reliable and highest rated tankless water heater on the market of 2019.

rheem rte 18 tankless water heater review
rheem hot water heater reviews

 

 

Features:

  • Energy-efficient and money saver.

Being the best tankless water heater under $500, the price of which is really cheap and affordable. It provides endless hot water and is very efficient. The installation can be easy, takes about 1 hour for the installation process, so it really saves much money in installation cost. Multiple stranded wire makes the connection much easier.

  • Compact shape saves space

The small tankless water heater is able to save much space for you. You can just hang it on the wall in your bathroom, perfect for studio family. The maximum flow rate of it is 4 gallons per minute, so it provides for single bathroom use only.

  • Simple operation

The operation of the machine is quite simple, led light with digital temperature settings are equipped. You can simply dial the button and change the temperature easily. Advanced design makes it able to adjust the temperature with an increment of 1 degree F each time.

  • Smooth water flow

No fluctuation occurs during the using process, you can always enjoy the hot water in using. It takes about 15 seconds for hot water to flow out. The temperature of water keeps the same with no slight drop or fluctuate.

  • Flexible installation spots

This is the best electric tankless water heater, which means it uses electric as the main power. Unlike gas or propane tankless water heater, this gives you more choice on installation spots, you do not need to worry about the ventilation or gas pipe, etc.

Pros:

  1. Less using cost on electricity bill
  2. Money saver on using and installation
  3. No fluctuation during using period
  4. Constantly hot water offer
  5. Perfect for small room use

Cons:

You can use only one faucet or shower a time


2. Rheem RTEX-18 Electric Tankless Water Heater

Rheem RTEX-18 is also a good tankless water heater used for home. It is electrically powered.

rheem electric tankless water heater
Rheem Rte 18 tankless water heater review

 

 

Features:

  • Quiet working condition

In the whole using period, you can hardly hear the working noise and no clicking relays as other propane or gas tankless water heater, so you can enjoy hot water in quiet and satisfying situations.

  • Digital dial control

Temperature lights up once you turn on the valve somewhere, the simple operation on control enables you to increase the water temperature one degree a time. And external digital thermostatic control with LED display makes it easier to use.

  • Small and compact

The shape of RTEX-18 is quite compact and small, you can install it anywhere you want without occupying much space. It is perfect for small and studio family use. As the flow rate is not too large, it is the best tankless water heater for one bathroom and one kitchen faucet only.

  • Used in cold climate

Advanced self-modulation technology is equipped, able to adjust the power so as to meet hot water demand. Even in cold climate or north area, you can still enjoy constantly hot water without obstruction.

  • High-quality standard

Durable copper material protects the heating element, and it has satisfying after-sale service for you.

  • Cheap using costs

It is capable of providing endless hot water for you, the energy efficiency is high and thus saves much-using costs. Electric power design frees you from worrying about ventilation or gas pipe.

  • Easy to install

Installation is super easy, you can even install by yourself, which greatly reduced the high costs on installation. As a good electric tankless water heater around $500, it really worth its price.

Pros:

  1. Durable Copper immersion two heating elements, field Serviceable
  2. Advanced self-modulation technology
  3. External digital dial control with LED light
  4. Small and compact shape
  5. Can be used perfectly in cold areas
  6. Best tankless water heater for tiny house

Cons:

  1. It satisfies the demand of one faucet and one shower simultaneously only
  2. Takes up a few seconds for the water to heat up


Best Rheem Gas Water Heaters Reviews

Natural gas is also an important power for tankless water heaters, which includes 40 gallons and 50 gallons natural gas tankless hot water heaters. In use, you should pay more attention to the ventilation and pipe of gas.

Here we made 4 best Rheem gas tankless water heaters reviews for you:

1. Rheem RTG-95XLN Outdoor Tankless Natural Gas Water Heater

RTG-95XLN is a hot selling type of gas tankless water heater in 2018.

best rheem gas water heater
Rheem tankless gas water heater

Features:

  • Stainless steel heat exchanger

The heat exchanger is made of stainless steel, it provides you more options to connect both vents when water demand is high. The flow rate of it is 9.5 GPM per minute, which meets the high demand for hot water. In using process, there is no fluctuation occurs.

  • Outdoor installation

This gas water heater is installed outside, so you do not need to worry about the ventilation. As the installation process is not so easy, we still suggest you get a professional staff, of course, the installation costs should be taken into consideration.

  • Remote control

It has EcoNet home technology, if you want to control it remotely, just download the app and you can turn in on and off no matter where you are.

  • Compact

The shape of 95XLN is much smaller than the tank water heater, even when it is installed inside, it occupies an only small piece of space, so you can install wherever convenient and suitable.

  • Available for both gas and propane

Both natural gas and propane are available in providing power for the tankless water heater. The consumption of energy 94% high energy efficient saves more money for your bill.

  • Good warranty

Rheem promises to keep 10 years warranty on the heating exchanger, which means you can use it for a long period of time under quality guaranteed.

Pros:

  1. 94% energy rating
  2. App remote control
  3. Compact shape
  4. Stainless steel heat exchanger offers more choice
  5. Outdoor installation, free from ventilation
  6. Standard 10-year warranty

Cons:

Expensive for both products price and installation costs


2. Rheem RTG-64XLN Outdoor Natural Gas Tankless Water Heater

Temperature range of this Rheem natural gas tankless water heater is 100-140 degree F, it is perfect for mid-size home use.

rheem gas hot water heater reviews
Rheem gas water heater reviews

 

 

Features:

  • Large power

It works on power ranging from 11000 to 150000 BTU, so it suits a good range of power input. One of the cool features is that it can be used as commercial tankless water heater when you connect two or more of it together.

  • Perfect for high altitude use

This is the best tankless water heater for high altitude, the power of it is quite large, meet the demand of providing endless hot water even in cold areas or high altitude. Inside the unit is freeze protection, which protects the heat exchanger from frozen for -30 degree F.

  • Easy to use

This unit is installed outside, no ventilation is required, unlike indoor tankless water heater. There is a digital console on the unit, showing the temperature and maintenance code.

  • Environmental friendly

As a gas tankless water heater, the nitrogen oxide emission has always been a major task. In order to solve the problem, Rheem particularly designed the unit into ultra-low Nox type, which meets the requirement of SCAQMD and is the most environmentally friendly product.

  • No cold water sandwich effects

Coldwater sandwich effect is the common problem of tankless water heater, the hot water remains in the pipe after turning the heater off, followed by unheated cold water, causing fluctuation in using process. In order to solve the problem, Rheem starts its hot starting programming, using a small tweak to continue the operation for a moment after turning the unit off.

  • Energy saving

This unit is able to save about 1100 gallons per year, which greatly reduced using cost. The exclusive water-saving settings inside the water heater is also capable of reducing the flow of water through the pipe.

Pros:

  1. For low water flow, hot water is still available
  2. Less using costs
  3. Low Nox design
  4. Large flow rate for a large family or commercial use
  5. 82% energy efficient rating
  6. Suitable for low and high altitude both
  7. No venting required

Cons:

  1. Must be installed by professionals
  2. Must be installed outside


3. Rheem RTG-84XLN Natural Gas Outdoor Tankless Water Heater

This unit of 84XLN is also installed outdoor, no venting system is required and 8 gallons per minute water flow enables middle size family use.

rheem gas tankless water heater reviews
Rheem tankless gas water heater reviews

 

 

Features:

  • Constantly hot water

The flow rate of the unit reaches 8.4 GPM, which is a relatively high flow rate range, it is able to provide endless hot water for you. It meets the demand of using one shower and two kitchen faucets the same time without any fluctuation.

  • Cheap using costs

Hot water flows out of the unit quickly without long waiting time, so there is not much cold water wasted in showering. The high efficient design also saves much money for your bills.

  • Compact size

The same as other Rheem tankless water heater, this 84XLN type is designed compact and small, occupying an only small piece of land and you can install it anywhere that is suitable. The outdoor installation also frees you from worrying about the ventilation.

  • Suitable for big families

With 8 gallons of water flow per minute, this is the perfect one for a big family or home use. You can comfortably enjoy the hot water no matter you are showering or washing dishes.

Pros:

  1. Energy efficient
  2. Suitable for large or big family use
  3. High water flow rate
  4. The outdoor unit, no ventilation required
  5. Endless hot water supply
  6. Short waiting time for hot water

Cons:

Like the other Rheem products, this unit is also suggested to be installed by professionals


Rheem Propane Tankless Water Heater Reviews

Apart from electric and natural gas, propane is another power for a tankless water heater.

Here we made a review of best Rheem propane tankless water heater on the market for you:

Rheem RTG-95XLP Outdoor Tankless Propane Water Heater

Quite the same as RTG-95XLN, this is powered by propane instead of natural gas. It is more powerful and meets the higher flow rate demand.

best rheem gas water heater
Rheem tankless gas water heater

 

 

Features:

  • Low Nox design

This unit is used outdoor, having no worry of ventilation but still, it lets out more nitrogen oxide and does harm to the environment. The low Nox design of the unit greatly solves the problem.

  • Large flow rate

The flow rate of the unit is 9.5 gallons per minute, which is the highest among other Rheem products, able to meet the demand of large family use easily. It works on power ranging from 11,000 to 199,900 BTU.

  • Hot water supply

The temperature of hot water the unit can offer is 120 degrees F, which meets the demand in the north area or cold climate. It is said to be capable of raising the temperature up to 140 degrees F with a minimal change on the remote control. You need to buy extra remote control if you need.

Rheem Outdoor Tankless Water Heaters Reviews

Outdoor tankless water heater refers to the units installed outdoor, one worth mention advantage of outdoor water heater is its no ventilation requirements. You do not need venting kits as indoor water heater does. Normally outdoor tankless water heaters are gas or propane types.

Here we made an outdoor tankless water heater reviews for you:

1. Rheem RTG-95XLN Outdoor Tankless Natural Gas Water Heater

best rheem gas water heater
Rheem tankless gas water heater

2. Rheem RTG-64XLN Outdoor Natural Gas Tankless Water Heater

rheem gas hot water heater reviews
Rheem gas water heater reviews

3. Rheem RTG-84XLN Natural Gas Outdoor Tankless Water Heater

rheem gas tankless water heater reviews
Rheem tankless gas water heater reviews

4. Rheem RTG-95XLP Outdoor Tankless Propane Water Heater

rheem gas tankless water heater reviews
Rheem tankless gas water heater reviews

Rheem Water Heater Prices

Each type of Rheem tankless water heater prices are different, but the electric one is much cheaper than gas and propane types normally. For electric tankless water heater, the installation is quite easy and you can install by yourself, reducing the installation costs to a large extent.

On the other hand, the gas and propane tankless water heater is more energy-efficient and saves much money on your bills. On choosing a tankless water heater, you should think more about the usage, whether you are using it for a large family or for a tiny house. And then choose the best tankless water heater based on your budget.

If you have interest in all the Rheem products prices and other information, please feel free to check it out on Amazon.

What We Pick Is…

Among all the other tankless water heater of Rheem, we would like to suggest RTEX-13 Electric Tankless Water Heater for you. This unit is listed on the best selling heaters on the market in 2019. The compact and small shape saves more space for you, occupying an only small piece of land in your bathroom.

Unlike a tank water heater, this unit looks simple. Digital dial and console make it easy to use, you can even change the temperature one degree a time. Electric power also gives you more options on installation spots and frees you from dealing with the venting. But because of its small flow rate, it meets the demand of shower and one faucet simultaneously only. Thus it is the best tankless water heater for a tiny home or small house.

If you have any interested in the price and other details of the products, please check it on the Amazon by clicking the button below.

rheem rte 18 tankless water heater review
Rheem hot water heater reviews