Endless Hot Water. Bath, after bath.

These innovative, new tankless gas water heaters provide a continuous supply of hot water from an energy-efficient and space-saving design about the size of a medicine cabinet.

  • UMC-117 remote control is included and can be set up to 140 degrees
  • EZ-Link cable available for high demand applications to connect two tankless units to operate as one
  • Exclusive! Guardian SBT sensing burner technology
  • Exclusive! Guardian OFW overheat film wrap
  • Exclusive! All Rheem models can be linked in up to 20 unit manifold installations by using the optional MIC-180 and MICS-180 manifold control assembly
  • Exterior Mount
  • Natural Gas or Propane
  • Environmentally friendly Low NOx burner
  • Direct electronic ignition - no pilot light
  • On-Board diagnostics and safety monitoring
  • Interior sealed combustion units - do not use interior combustion air
  • Indoor and outdoor models feature freeze protection to -20F
Rheem logo Energy Star

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Model IDModel NameInput Range
Flow Rate
2288RTG-53XN19.0 - 141.0.82100 - 1406.820.5x13.75x6.2536
2290RTG-66XN11.0 - 180.0.82100 - 1408.423.6x13.8x8.854
2293RTG-74XN-119.0 - 199.9.82100 - 1408.525.3x14.9x11.155
  • Heat Exchanger - 12 Years
  • Parts: 5 Years
  • Reasonable Labor: 1 Year