Rheem® Water Heaters

100+ Unique Models for Every Application

As one of the world’s most recognized names in water heating solutions, Rheem has been driving industry innovations for decades. With a full line of gas, electric, tank-type, tankless and point-of-use water heaters, Rheem continues to earn top reliability ratings and industry-wide recognition year after year.

The Rheem Advantage

  • Large line of ENERGY STAR® water heaters
  • Industry-best UEF ratings up to 3.70
  • The only maintenance-free FVIR solution
  • Exclusive leak detection technologies on select models
  • Enhanced-flow brass drain valves
  • All models are low-lead compliant

Browse Our Selection of Rheem Water Heaters

Professional Classic Electric Water Heaters
Professional Classic® Electric Water Heaters
Professional Classic Gas Water Heaters
Professional Classic® Gas Water Heaters
Commercial Water Heaters
Commercial Water Heaters
Marathon Water Heaters
Marathon® Water Heaters

Understanding Rheem® Product Lines

Wholesale Professional Classic®

The full line of Rheem Professional Classic water heaters, available exclusively through wholesale, includes everything from entry-level models to products with advanced energy-saving features and cutting-edge technologies.

Retail Performance® - Exclusively Available in The Home Depot Stores

The Rheem Performance line is available to plumbers and homeowners exclusively through The Home Depot®. Performance models are designed for efficiency and convenience, and are available in three tiers to satisfy any budget. Use your existing Home Depot Pro credit line to shop this product line in stores with the ProPurchase program.


Rheem Marathon nonmetallic water heaters are made to outlast traditional steel water heaters. They are durable, lightweight and warranted not to leak. Marathon water heaters come with a limited lifetime warranty on the tank and a 6-year warranty on the parts.

Wholesale Professional Classic® Retail Performance
BTU (Gas) 38-40K 36K
Gas Valve & Pilot (Gas) Mechanical & Thermocouple Self-Powered & Thermopile
Wattage (Electric) 4,500/4,500 4,500/4,500
Elements (Electric) Stainless/Copper Stainless/Copper
Drain Valve Brass Plastic
Everkleen® Dip Tubes Yes No
Protection Plus® Upgrade Eligible Yes No
Retail Packaging No Yes
Tank/Parts Warranty 6/6 6/6