A Rheem tankless heater provides you with the convenience and comfort of hot water on-demand. The whole-home tankless water heaters come in natural gas, propane, and electric versions. They are perfect for busy families and homes with luxurious bathrooms or vacation homes.

In addition, our point-of-use electric tankless heaters are ideal for heating a single faucet and shower. Rheem offers a wide range of water heaters. These can be used to heat your entire home or just one location. They also work well for adding garages, outbuildings, or RVs. You can search for the right Rheem electric tankless water heater to meet your needs.

List of the Best Rheem Electric Tankless Water Heater

It can be challenging to look through the several options available when looking for the Best Rheem Tankless Water Heater. We’ve compiled a list of Rheem electric tankless water heaters that will assist you to make the most practical purchase for your office or home.

• Rheem RTEX-36 Residential Electric Tankless Water Heater
• Rheem RTEX-27 Residential Electric Tankless Water Heater
• Rheem RTEX-24 Residential Electric Tankless Water Heater
• Rheem RTEX-18 Residential Electric Tankless Water Heater
• Rheem RTEX-13 Residential Electric Tankless Water Heater
• Rheem RTEX-11 Residential Electric Tankless Water Heater
• Rheem RTEX-8 Residential Electric Tankless Water Heater
• Rheem RTEX-6 Residential Electric Tankless Water Heater
• Rheem RTEX-4 Residential Electric Tankless Water Heater

Tankless Buying Guide

Rheem has the best water heaters, but it is essential to select the right one to ensure you have hot water all the time. These are the four steps to help you choose the right tankless gas water heater or tankless electric water heater.

1. Understand Your Options

There are two main types of tankless water heaters available: electric and gas. These include both propane (LP) and natural gas (LP). They can also be used in whole-home or point-of-use configurations. Although they are more affordable to run, gas tankless water heaters require venting. Outdoor models are a notable exception. Because they don’t require venting and require only a dedicated electrical circuit, electric tankless water heaters are easier to install. The most important thing to consider is where you will use the hot water.

• A point-of-use electric water heater is the best choice for a single place, such as a bathroom, sink, garage, or workshop.
• Choose the water heater that best suits your whole-home application, whether electric, natural gas, or liquid propane.

2. Calculate the Temperature Degree Rise Based On Your Location

The average temperature of the water supply inlet can vary by location, so the ideal tankless water heater might not work in the north. A tankless gas heater may work well at 8,000 feet but not at 12,000 feet.

The degree of rising in your area is the difference between your desired temperature and the inlet temperature (105deg-60deg=45deg).

3. Add Up Your Simultaneous Hot Water Needs

The GPM (gallons per minute) that you and your family require will determine how much water your tankless heater must deliver (e.g., A water heater must be able to provide at least 5.5 GPM (2.0+2.0+1.5=5.5).

4. Check the Specs

Each tankless water heater’s product information page (or spec sheet) lists the gallons per hour at specific degree increases.

• Find the line that corresponds to your degree increase from step 2 on the GPM chart. This will show you how many GPM water heaters will produce at this degree rise.
• Compare the GPM total you require from step 3 to the one in the chart.

5. Consider Unique Features and Benefits

Some features are unique enough that they can only be found on specific models.

• A Rheem tankless water heating system with recirculation is a good choice if you need instant hot water.
• A Rheem outdoor tankless water heater is a great way to make your home more spacious.
• Eco Net Enabled models allow you to control your water temperature and monitor the status of your system remotely.

Tank or a tankless!

Are you still unsure if a tankless water heater would be suitable for your needs? This video will help you decide.

Why go tankless?

The Basics

 Because they heat hot water instantly, tankless water heaters use less energy than traditional tank-type heaters. In addition, these compact, space-saving models are about the same size as a medicine cupboard and can be easily wall-mounted indoors or outdoors, depending on the weather.

Continuous Hot water, Continuous Savings

 Rheem tankless water heaters combine innovative technology and functionality to provide hot water that is affordable and available whenever you need it. A properly sized tankless water heating system will provide hot water no matter how many shower heads or body sprays you use and no matter how deep your whirlpool is.

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