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Rheem Professional Classic Series RTEX-27

Special Price $599.00 Regular Price $753.41
In stock
Rheem Professional Classic Series RTEX-27 Rheem Indoor Electric Tankless Water Heater -Free Shipping and In Stock at $599 Rheem Electric with 112AMPS Rheem UPC020352685342 Electric Indoor Tankless Water Heaters - Top Selling Electric Tankless Water Heaters

Rheem Professional Classic Series RTEX-27

Professional Classic tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applications

Performance Features

  • On demand, consistent and endless hot water
  • Compact and stylish with digital temperature control in increments of 1°F ranging from 80°F to 140°F*
  • 99.8% Energy efficient
  • Robust copper immersion heating elements with brass top increases durability and are
  • Simple Installation
  • Digital temperature display
  • External controls to adjust temperature in increments of 1°F*


  • Whole-Home – up to 6 GPM
  • Water-Saver Shower Head – 1.5 GPM
  • Standard Shower Head – 2.0 GPM
  • Standard Hand Sink – 0.5 GPM
  • Kitchen Sink – 1 to 2 GPM
  • Bath Tub – = 4 GPM
  • Dishwasher – 1 to 2 GPM
  • Washing Machine – 1 to 1.5 GPM

Average Gallons Per Minute (GPM) based on 2010 Plumbing Standards


*** Can be wired 208V - Subtract 25% performance ***


More Information
Weight 25.0000
Manufacturer Rheem
UPC 020352685342
GTIN 00020352685342
Category Tankless Water Heater
AWG Wire: 8 AWG
Voltage 240V
Required Breaker: 3x40A
Wire Size 8 AWG
Power 27 kW
Amperage 112A
Energy Source Electric
Water Connection 3/4 Inch
Turn On(GPM) 0.3
Flow Range .3-7.0 GPM

File Downloads

(Size: 225.9 KB)
Eemax 1/2" & 3/4" Inline Flow Regulator (Pressure Compensating)
(Size: 1.1 MB)
Rheem RTEX Electric Use and Care Manual
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