• Bosch Tankless Water Heater
  
• Heats Whole House
• BTU 175,000
  
• 85% Efficiency
• Ignition Electronic Voltage120 VAC
• Model Number: GWH 635 ES
  

BTU Input 175,000 (51.2 kw) Energy Factor.85 Average Efficiency87% (recovery efficiency) IgnitionElectronic Voltage120 VAC 50/60 Hz Exhaust Vent Size3" Combustion Air Pipe Size3" Exhaust VentingDiameter: 3 inch Material: Stainless Steel (AL29-4C) sealed Minimum length: 3 ft. Maximum length: 26 ft. (8m) with one 90 degree elbow. Less 2.5 ft. for each additional 90 degree elbow (1.25 ft for each 45 degree elbow) Intake Venting (Room-sealed installation)Diameter: 3 inch Material: PVC, Aluminum or Galvanized Maximum length: 26 ft. (8m) with one 90 degree elbow. Less 2.5 ft. for each additional 90 degree elbow (1.25 ft for each 45 degree elbow) Minimum Flow Rate (gpm).8 gpm (3 l/m) Capacity Activation .8 gpm (3 l/m)90° F rise / 3.2 gpm 80° F rise / 3.5 gpm 70° F rise / 4.0 gpm 60° F rise / 4.7 gpm 50° F rise / 5.7 gpm 45° F rise / 6.35 gpm Weight47 lbs. (21 kg) Optional AccessoriesHorizontal Vent Kit Wireless Remote control

NOTE: Installation of tankless water heaters requires a careful evaluation of gas supply (The burner on this unit can consume more than 4 times the gas as a regular tank style water heater while in operation.)

Learn more about 'Going Tankless'