Residential

  • NEW 66 Direct Vent tankless model available
    • Temperature range from 85° to 140°
    • Great for homes with 2 to 3 bathrooms
    • Same great compact design
    • Gas inputs ranging from 11,000 to 180,000 BTUH, fully modulating
    • Adjustable for optimal use between sea level an 9,840 feet
    • 12-Year heat exchanger warranty
    • 5-Year limited parts warranty
    • 1-Year limited warranty
    • click here to learn more

  • Indoor and Outdoor Models Available (Applies to 53, 66, and 74 units after 7.1.08)
    • Available in Natural Gas and LP Models 12-Year Limited Warranty on Heat Exchanger *
    • 5-Year Limited Warranty on Parts *
    • 1-Year Limited Service Warranty
    • Continuous hot water
    • Energy saving design
    • Compact, space saving design
    • Intelligent electronic controls and sensors
    • Self diagnostic program
    • Digital display shows temperature setting and maintenance codes
    • Exclusive sensing burner technology
    • Exclusive film wrap overheat limiter
    • Built-in electric blower
    • Indoor units use Category III stainless steel vent
    • Indoor models supplied with a 120 Volt power cord
    • Low NOx emissions meet SCAQMD rule 1146 requirements
    • A remote control thermostat is included with all models (100 F - 140 F setpoint range) Requires 18 AWG, 2 conductor thermostat wire for remote control connection. Wire not included.
    • Optional additional remote controls are available.

Manufacturer's Certification Statement for Qualified Energy Property

Spec Sheets
53 Series Models
74 Series Models
New 66 Series Models

Manuals
RTG2-42 Indoor
RTG-53 Indoor and Outdoor
RTG-53 Direct Vent
RTG-66 Direct Vent
RTG - 66X Outdoor
RTG-74 Indoor and Outdoor
RTG-74 Direct Vent

Warranty
If you purchased your water heater before 7.1.08 or purchased a 42 model Rheem tankless water heater, click here.

If your 53, 66, or 74 Rheem tankless water heater was shipped to the distributor after 7.1.08, click here.

If you have any questions regarding your tankless water heater's warranty, please contact customer service at 800-432-8373

Brochures
Wonderfilled Tankless Brochure


Accessories
Available Accessories

Accessory Manuals
RTG-53X Recess Box
RTG-74X Recess Box
RTG-53 Pipe Cover
RTG-66 Pipe Cover - Coming Soon
RTG-74 Pipe Cover
EZ-Link Instructions
Direct Vent Sweet Termination
*If the water heater is installed anywhere other than a single family dwelling, such as a commercial application, or in any system in which the water is recirculated, the applicable warranty periods will be limited to one (1) year.