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Rheem Essential
Tankless Water Heaters Tankless Water Heaters
Tankless Water Heaters Tankless Water Heaters

Tankless Water Heaters


Maximize your savings, convenience and hot water with new Rheem® Tankless Water Heaters—and get estimated savings of up to $1,1001 (NG Condensing models only)

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Maximize Hot Water

Load the laundry, start the dishes and still have enough hot water to enjoy a relaxing hot bath

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Enjoy Instant Hot Water

Choose a Tankless Water Heater With Built In Recirculation Pump or add a recirculation pump kit for instant hot water at the faucet

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Minimize Cold Water Bursts

It pumps water through the heat exchanger in an internal loop so it’s ready for back-to-back hot water needs

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Save Energy

Tankless water heaters only produce hot water when you need it, so they save energy and money all the time

Rheem High-Efficiency Tankless Water Heater

Compare Standard Tank-Type &
Rheem Tankless Gas Water Heaters

The Rheem Tankless Water Heater line makes it easy to replace a traditional tank water heater while delivering greater energy efficiency,
exceptional cost savings, water savings and long-term dependability.

  Rheem Tankless Water Heaters Standard 50-Gallon Gas Tank-type
Continuous Hot Water Green Checkmark Not Continuous
Instant Hot Water Green Checkmark Red X
Operating Costs As low as $196/year $293
Size About the size of a carry-on suitcase 60″H x 21″W x 21″D
Installation Location Indoor or Outdoor (w/available accessory) Indoor
Digital Display Green Checkmark Red X
Warranty 12 Years 6 Years
Water Savings Up to 12,000 gallons Red X
Recirculation Built-in options available Accessory Only

Rheem High Efficiency Tankless Water Heater Options

Tankless Water Heater Features

Why choose a Rheem Tankless solution? Rheem Tankless Water Heaters offer the savings, comfort and protection you need.

  • Save Money

    Rheem High Efficiency Tankless Gas Water Heaters save up to $1,100 over 12 years1, and some qualify for rebates

  • Save Space

    Compact sizes and outdoor models increase valuable usable space in your home

  • Save on Installation

    1/2″ gas line compatibility (all models), low-cost PVC venting (High Efficiency models) and built-in condensate neutralizer3 (select High Efficiency models only) save installation time and money4

  • Save Water

    Save up to 12,000 gallons2 of water per year with a Rheem Tankless Water Heater with Built In Recirculation Pump

  • Stay Safe

    Exclusive Overheat Film Wrap shuts down the unit if the heat exchanger overheats for added safety in your home5

  • Protect Your Home

    Available EcoNet® WiFi Kits send mobile maintenance reminders and detect and alert you to water leaks after shutting off water and gas to the unit (indoor models only5).



Rheem Tankless Water Heater Product Photo - Angled
  • Preferred by Plumbers

    More plumbers sell Rheem Tankless Water Heaters than any other tankless brand6

  • Innovation

    Rheem Tankless Water Heaters offer many exclusive, industry-first and industry-best features

  • One Rheem

    Rheem is the only manufacturer offering heating, cooling and water heating equipment, and EcoNet® helps you manage them together—with smart-home systems compatibility

  • A Legacy of Expertise

    Rheem has been a leader in water heating for nearly 100 years

The Rheem Difference

Rheem Tankless Water Heater Product Photo - Angled Left

High Efficiency Hot Water Meets
Highly Efficient Space Heating

The Rheem® Combination Boiler joins the benefits of a tankless water heater with those of a hydronic boiler—all in one one space-saving unit.

The Combi delivers:

  • Up to 9.9 GPM of continuous hot water
  • 95% AFUE hydronic space heating
  • Compatibility with hydronic devices like registers, in-floor radiant heating systems, ceiling panel heaters—even hydronic air handlers


Advanced Protection
Enhanced Control

You can add EcoNet® WiFi Technology to most Rheem Tankless Gas Water Heaters produced 2010 or later, or purchase a Tankless Gas Water Heater with EcoNet Built-in to enjoy:

  • Leak detection with auto shut-off7 – to protect your home and belongings
  • Integration with Smart Home Systems – to control and monitor with your voice
  • Mobile temperature control, alerts and reminders5 – for total control over your home comfort
  • Notifications you can forward to your plumber – for faster, easier repairs

Go Tankless

Ready to enjoy continuous hot water with a Rheem Tankless Water Heater?

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