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Professional Classic RTEX-4


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 threaded for easy


  • Simple Installation
  • Digital temperature display
  • External controls to adjust temperature

in increments of 1°F*



  • Standard Hand Sink – 0.5 GPM
  • Water-Saver Shower Head – 1.5 GPM
  • Washing Machine – 1 to 1.5 GPM
  • Kitchen Sink – 1 to 2 GPM
  • Dishwasher – 1 to 2 GPM


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



  • 5-Year heating chamber and 1-year

parts limited warranty


 RTEX-04 0.9
 RTEX-06  1.5
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