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  • Rheem RTGH-84XLN 8.4 GPM Outdoor Tankless Low Nox Water Heater (NG)

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Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 60 day money back guarantee
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New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
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Rheem RTGH-84XLN 8.4 GPM Outdoor Tankless Low Nox Water Heater (NG)

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Product Overview

Additional Information


  • 6.6 GPM at a 45 degrees F temperature rise (up to 8.4 GPM at 35 degrees F)
  • Exclusive! Guardian OFW overheat film wrap
  • Digital display on thermostat shows temperature setting and maintenance/error codes
  • Environmentally friendly Low NOx burner meets SCAQMD rule 1146 requirements
  • Built-in electric blower to force exhaust gas to the outside
  • Features freeze protection to -30 degrees F
  • EZ-Link cable connects two like units to operate as one, doubling capacity - now available for high demand applications (cable not included)
  • High altitude chip is required for installation above 9840 ft. (chip not included with unit)
  • CPO recommends that appliances be installed by a licensed professional
  • 8.4 GPM Outdoor Tankless Low Nox Water Heater (NG) - RTGH-84XLN


Application: Outdoor
Flow Rate At 35 Degree F Rise: 8.4 GPM
Flow Rate At 45 Degree F Rise: 6.6 GPM
Flow Rate At 77 Degree F Rise: 3.9 GPM
Gas Connection: 3/4 in.
Gas Input BTU / Hr.: 11,000 - 157,000
Gas Type: Natural Gas
Ignition: Electronic
Minimum Flow To Activate: 0.40 GPM
Water Connection: 3/4 in.


Product Reviews

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  • 8.4 GPM Outdoor Tankless Low Nox Water Heater (NG)


    Can this, or another, unit be used to raise heated water from 120F to 140F for an appliance requiring a water temperature above that supplied by a boiler?
    Asked on 12/12/2014 by FO

    1 answer

    • Staff Reviewer


      Yes, this unit will be able to get to 140F. In fact, the max temperature that this water heater will heat water to is 185F.

      Answered on 3/4/2015 by Sonny from Lawrencville, GA
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