Rheem RTE18 Electric Point-Of-Use Indoor Water Heater 5 GPM 18 KW Residential / Mobile Home / Recreational

- Item #: BCI2143137

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RTE Collection Residential / Mobile Home / Recreational 5 GPM Indoor Electric Point-Of-Use Water Heater 18 KW

Point-Of-Use tankless water heaters are great for anywhere you need continuous hot water on demand.


  • Apartments
  • Boats
  • Condos
  • Homes
  • Hospitals
  • Laboratories
  • Offices
  • Restaurants
  • Anywhere hot water is needed


  • Compact design fits almost anywhere
  • Standard 1/2" water connections
  • Rugged brass/copper heat exchanger
  • Modulating power
  • On-unit temperature control
  • LED's indicate active element and standby mode


  • Minimum Activation Flow Rate: 0.5
  • Max Flow Rate: 5 GPM
  • Temperature Rise 20 degrees F: 5.0 GPM
  • Temperature Rise 30 degrees F: 4.1 GPM
  • Temperature Rise 40 degrees F: 3.07 GPM
  • Temperature Rise 50 degrees F: 2.46 GPM
  • Temperature Rise 60 degrees F: 2.05 GPM
  • Temperature Rise 70 degrees F: 1.76 GPM
  • Temperature Rise 80 degrees F: 1.54 GPM
  • Temperature Rise 90 degrees F: 1.37 GPM
  • Temperature Rise 100 degrees F: 1.23 GPM
  • Warranty: 10 Year Heat Exchanger - 1 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

Our SKU: Rheem RTE18

This product is listed under the following manufacturer number(s):

  • Rheem RTE18

*Denotes a finish or option that has been discontinued

Rheem RTE18 Product Specifications

Installation Sheet
Specification Sheet
Fuel Type Electric
Indoor Installation Yes
Length 10.5
Maximum Flow Rate 5
Minimum Flow Rate .5
Number of Breakers 2
Outdoor Installation No
Series RTE
Shipping Weight 12
Voltage 240
Warranty 1 Year Parts, 10 Year Heat Exchanger
Water Connection 1/2"
Wattage 18000
Width 11.25

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