Latest Asked Questions

Among tankless water heaters Bosch GWH C 920 ESC stands out for being cutting edge and top efficient.

The output of the model is 11.2 gallons per minute, which means Bosch GWH C 920 ESC can satisfy all your needs for hot water. The model is not eligible to the Energy Star program, as the input is more than 200,000 BTU/hr. However, 94% efficiency level makes the model a good option.

Bosch GWH C 920 ESC Features:

  • Dimensions: 30 1/2" h x 17-7/8" w x 11 1/4"
  • Power Input: 25,000 BTU/Hr Min 225,000 BTU/Hr Max
  • Max. Temp. of Output Water: 180°F
  • Thermal Efficiency: 94.00%
  • Min. Flow to Activate:" 0.65 gallons per minute (gpm)
  • Ignition: Electronic
  • Modulating Gas Valve
  • Flow Rates:
  1. 35°F rise @ 11.2 gpm
  2. 45°F rise @ 9.2 gpm
  3. 55°F rise @ 7.5 gpm
  4. 65°F rise @ 6.4 gpm
  5. 77°F rise @ 5.4 gpm
  6. 90°F rise @ 4.6 gpm
  • Warranty: heat exchanger (5-year limited warranty), recirculating applications (2-year limited warranty), other parts 2-year.

Accessories:

  • Concentric Termination Kit (#196016)
  • Outdoor Kit (#PTOK)
  • Freeze Protection Kit (7 709 003 574)
  • Wireless Remote (#TSTAT2)
  • External Water Filter (8 703 305 356)
  • Tankless Link Cascading Kit (#TLINK)
  • Isolation Valve Kit (9620LA)

Another Models:

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Choose Units


Choose What You Want To Calculate



Water Heater Power
 kW
Water Flow (Per Minute)
 Gallons
See Table "Typical Flow Rates"
Incoming Water Temperature
 °F
Output Water Temperature
 °F

Fixture Type Gallons (Liters) Per Minute
Lavatory
0.5 (1.9)
Bathtub
2-4 (7.6-15.2)
Shower
1.5-3 (5.7-11.4)
Kitchen Sink
1-1.5 (3.8-5.7)
Pantry Sink
1.5-2.5 (5.7-9.5)
Laundry Sink
2.5-3 (9.5-11.4)
Dishwasher
1-3 (3.8-11.4)

Activity Gallons (Liters) Using
Clothes washing
32 (121)
Showering
20 (76)
Bathing
20 (76)
Automatic dishwashing
12 (45)
Preparing food
5 (19)
Hand dishwashing
4 (15)
Source : ACEEE

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