Natural Gas Whole House Indoor Water Heater 8.4 GPM Residential

Item # BCI2143139   |   Model # RTGH-84DVLN   |  Prestige Collection

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Prestige Collection Residential 8.4 GPM Indoor Natural Gas Whole House Water Heater

There are Mid-Efficiency tankless water heaters and there are High-Efficiency tankless water heaters. This is the High-Efficiency version coming in with a 94% Thermal Efficiency rating and featuring a stainless steel condensing heat exchanger. The intelligent electronic controls are designed to increase energy efficiency and safety. Third party efficiency listed by AHRI.

Compact Size

The compact, space saving design is only about the size of a medicine cabinet.


Two-pipe direct vent system designed for PVC pipe, see instructions for details. Self-diagnostic system for easy installation and service. Hot start programming helps minimize fluctuation in water temperature, referred to as "cold water sandwich," during periods of frequent on/off operation. Built-in electric blower.


EZ-Link cable available to connect two tankless units to operate as one. Manifold up to six units with an optional MIC-6 control board or up to twenty with optional MIC-185 and MICS-180 control systems.


  • Digital remote control with 10 foot thermostat wire
  • Freeze protection to -30 degrees F
  • Digital display temperature settings and maintenance codes
  • Guardian overheat film wrap (OFW)
  • Fuel Type: Natural Gas
  • Installation Type: Indoor
  • Recommended for 2-3 bathroom homes


  • Thermal Efficiency: 94%
  • Minimum Activation Flow Rate: 0.4
  • GPM @ 77 degree rise max: 3.9
  • GPM @ 45 degree rise max: 6.6
  • Max GPM: 8.4
  • Altitude Certification: 9840 ft. above sea level
  • Warranty: 12 Year Heat Exchanger - 5 Year Parts

Rheem has been manufacturing water heaters since the 1930's, with coast to coast distribution by 1936. Their product offerings cover commercial and residential heating, cooling, solar water heating systems, conventional storage-style water heaters, tankless water heaters, replacement parts and accessories. Rheem's manufacturing facilities are ISO 9001 certified, with four facilities in the United States. Choose an industry leader that is respected for reliability. Choose Rheem.

Additional Rheem Links

This Rheem item can also be referenced by the following color/finish specific model #:

  • Rheem RTGH-84DVLN

*Discontinued model or finish

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