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Bosch RP27PT Powerstream Pro Electric 240VAC, 120A Thermostatic Point-of-Use Tankless Water Heater

Bosch RP27PT

Bosch whole house tankless water heaters are compact and powerful and can be installed virtually anywhere inside the home. Advantages include endless hot water, reduced electricity costs and substantial space savings.

  • 97% efficiency rating
  • 10-year warranty on heat exchanger
  • Solid copper heat exchanger
  • External temperature control knob
  • Thermal cut-out for safety
  • Flow sensor to provide a constant output temperature
  • Electronic flow switch
  • Provides an ENDLESS supply of hot water
  • Weighs less than 25 pounds and fits virtually anywhere
  • No temperature/pressure relief valve necessary
  • Not recommended for whole house use in climates where average ground water temperature is less than 60F.
  • Warranty - 10 year limited warranty on the heating modules.
  • 1 year limited warranty on other component parts

NOTE: All water heaters of any type MUST be installed by a trained and licensed technician. Failure to do so may result in damage, injury or death. Warranties may be void if installed by non-licensed personnel. We will not be held liable for any damages, injury or death caused by proper or improper installation of hot water heaters.


  • Compact, whole-house tankless heater
  • 90+% efficient with zero stand-by loss
  • Solid copper heat exchanger
  • Electronic flow switch
  • Thermal cut-out protects elements from dry fire damage
  • Built-in flow sensor ensures constant output temperature
  • External temperature control knob
  • 10-Year warranty
Technical Specification RP27PT
 Flow Rates  45°F rise  4.0 gpm
 50°F rise  3.7 gpm
 60°F rise  3.0 gpm
 70°F rise  2.6 gpm
 80°F rise  2.2 gpm
 Thermal Efficiency  94%
 Dimensions  15.5" x  15.25" x 4.5"
 Weight  22 lbs
 Water Fittings  ¾" Male NPT

Electrical Requirement RP27PT
 Volts  240
 Kilowatts  26.85kW
 Amps U.S.A.
 120(3x40  amps)**
  120(1x120 amps)
 Wire Size U.S.A.
 8 Gauge
  (6 conductors & ground)t
  2 Gauge
  (2 conductors & ground)t
 Phase  Single

Warranty Information

10-Year warranty !
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