Rheem RTGH-90XL Tankless Water Heater Propane 9.0GPM Outdoor

Item#: RTGH-90XLP

Brand: Rheem

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Product Details

  • Part #:RTGH-90XLP
  • Category:Tankless Water Heater
  • Brand:Rheem
  • Weight:82.0000
  • Voltage:120V
  • Power:120 V
  • Energy Source:Propane
  • Energy Factor:.94
  • Flow Rate @ 35 F Rise:9.0 GPM
  • Flow Rate @ 45 F Rise:7.5 GPM
  • Water Connection:3/4 Inch
  • Gas Connection:3/4 Inch
  • Number Of Bedrooms:2-3 Bedrooms
  • Max Heating BTU:180,000

Rheem RTGH-90XLP

11,000 - 180,000 BTU max. 9.0 gal/min at 35 degree F rise max., 7.5 gal/min at 45 degree F rise.

12-Year Limited Warranty on heat exchanger, 5-Year on parts, 1-Year on labor.


  • .94 Energy Factor (EF) with efficient stainless steel condensing heat exchanger
  • 2-Pipe Direct Vent System designed for PVC Pipe
  • up to 35 ft. of 3" PVC Pipe or 5 ft. of 2" PVC Pipe
  • Industry Best! .26 GPM Minimum Flow Rate, .40 GPM Minimum Activation Flow Rate
  • Didgital (UMC-117) remote control and 10 ft of thermostat wire included
  • EZ-Link cable available for high demand applications to connect two tankless units to operate as one
  • Manifold up to 6 units with an optional MIC-6 manifold control board
  • Manifold up to 20 units with the optional MIC-180 plus the MICS-180 manifold control assembly
  • High-altitude capability - up to 9,840 ft elevation above sea level (no chip required)
  • Exclusive! Guardian OFW overheat film wrap
  • All Rheem tankless models aer third-party efficiency listed by GAMA/AHRI
  • Continuous hot water, energy saving and compact, space saving design
  • Intelligent electronic controls designed to increase energy efficiency and safety
  • Self Diagnostic System
  • Digital display shows temperature setting and maintenance codes
  • Built-in electric blower
  • Supplied with a 120 volt power cord (indoor models only)
  • Environmentally friendly Low NOx burner meets SCAQMD rule 1146 requirements
  • Freeze protection to -30 degree F

    *Based on simultaneous showers using 2.5 gallons per minute. Flow rates vary depending on temperature of cold water supply.

    The H90 Condensing Series Tankless models can be converted for Commercial Installations - RTG-20244D ( RTGH-90XLP )


    • Vents with Standard PVC – lower cost, readily available, and easy to install
    • 94% efficient
    • Built-in Condensate Neutralizer – reduces installation cost and time
    • ENERGY STAR® rated
    • Industry-Best Low Activation Flow Rates