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Rheem Water Heater : How To Easily Choose in 4 Steps

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Rheem water heater models and buyer's guide

Choosing the right rheem water heater can be difficult. If you never shopped water heaters before, you have plenty of choice and options available for both residential and commercial applications.

Rheem is one of the market leader in water heater sales thanks to almost 100 year in that industry.In addition to being a global leader and launching new technologies, Rheem offers good guarantees and an outstanding experience as a customer.

1 – Rheem Gaz VS Electric Water Heater

If you live in the US, chances are that you have easy access to gas to power your water heater and that would be the best / cheapest choice for you. If you live in Eastern Canada, electricity is so cheap that a gas option doesn’t make sense for you.

Gas tank water heaters will supply you with more and hotter hot water for a longer period of time. If you have a large family, this is a lifesaver.

2 – Rheem Tank VS Tankless water heater

Rheem Water Heater
Rheem Water Heater

Rheem offers many types of residential water heater but we can easily isolate them in two categories : Rheem tank type water heaters and Rheem tankless water heater.

A tankless water heater will provide you with instant and infinite hot water, However, you won’t be able to use a lot of appliances that needs hot water at the same time since they are rated for a number of gallons per minute. They are also cheaper to operate since they only heat the water you need. Since installation cost is way higher, many families don’t opt for that option.

Tank water heaters have been on the market way longer and they are easier to install, to maintain and to operate. The downside of a tank water heater is the corrosion happening inside the tank. Thanks to new technologies is now possible to completely stop the corrosion by using a powered anode rod called Corro-Protec. This anode also reduces limescale buildup and prevent premature wear of the tank.

3 – Rheem Water Heater Tank Size

If you decide to go for a rheem tank water heaters, the size of the tank is very important. The best thing to do is calculate the hot water usage of your household and make sure you have a proper sized tank to avoid running out of hot water. If you want to have a very average estimate, here’s a chart :

  • For 1 to 2 people: 30-40 gallons
  • For 2 to 3 people: 40-50 gallons
  • For 3 to 4 people: 50-60 gallons
  • For 5+ people: 60-80 gallons

4 – Rheem Water Heater Warranty


All Rheem equipment comes with a Certificate of Limited Warranty that includes all of the warranty details for each product. This limited warranty can span anywhere between five and 12 years depending on the specific model selected. Some terms even provide a warranty for labor in the first few years.

In addition, customers can select to purchase an extended Protection Plus Plan if they’d like to extend their warranty for another four years. This plan will add four years to your limited warranty. This extended warranty normally cost between $150-$200 and can be purchased across multiple authorized vendors.

Rheem warranty will depend on the series you choose.

SeriesLength of Warranty
Classic6-year Limited
Classic Plus8-year Limited
Prestige12-year Limited
Marathon6-year Limited parts, Lifetime tank

Rheem Sustainability

Today, choosing an eco-responsible business is very important for many consumers. In addition to having quality products, you can be assured that they are manufactured with special attention to the environment.

With their goals for 2025, Rheem stands out from the competition :

  • Launch a line of heating, cooling and water heating products that boast a 50% reduction in greenhouse gas footprint.
  • Reduce greenhouse gas emissions by 50% and achieve zero waste to landfill in our global manufacturing operations.
  • Rheem will train 250,000 plumbers, contractors and key influencers on sustainable products or sustainable installation and recycling best practices.

This commitment demonstrates that Rheem cares about the environmental impact of their products. As of today, Rheem already removed some packaging material that ended up in the garbage, covered 95% of their facility to LED lightning and saved over 234M gal of water.

Technical support

Rheem water heater technical support resources are robust, offering assistance for both commercial and residential users. Its Homeowner Resource Center includes myriad downloadable guides, Frequently Asked Questions, information on relevant rebates, serial number locators and more.

There is also a vast collection of product education resource designed to help homeowners learn as much as possible about their new units. Virtual guides cover such topics as “How Old is My AC?” and “How Old is My Furnace?” If users still need extra support, they can use the online “Find a Pro” tool to help them connect with a local Rheem expert in their area who can do rheem water heater troubleshooting.

Rheem water heater parts are widely available so you don’t have to worry about your water heater breaking and not being able to repair it.

Energy Efficiency

It might sound like a tall claim, but Rheem touts its Hybrid Electric Water Heater as being the quietest, smartest and most energy-efficient model on the market.

In less than three years, users can begin to see a return on their investment thanks to the unit’s 3.55 uniform energy factor. In addition, users can save money on utility costs in the long run thanks to features that offer quick leak detection, service notifications, and other protective alerts.

In addition, Rheem’s other tank-type electric heaters are equally energy-efficient. Most of the models in the line, including the Professional Prestige Series and Professional Classic Plus Series, feature an UEF of 0.90 to 0.93.

Technological Advances

Rheem water heater has long led the way in high-tech water heaters, and its most recent models are no exception. Take the RXTEX-13, for instance. This tank features an on-unit thermostat, along with a digital LED screen that makes it easy to see the exact temperature within. Users can attach the unit to any .5-inch water connection. In addition, Rheem’s gas tank water heaters are some of the most tech-savvy on the market.

The Professional Prestige Series: Powered Damper model, for instance, features EcoNet technology that allows users to integrate it with their home automation, energy management, and on-demand response systems. This brand is synonymous with innovation and continues to roll out product updates and special features designed to accommodate future-focused homeowners and business owners alike.

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