Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas Features: • 92% thermal efficiency " .90 energy factor • Condensing heat exchanger for maximum efficiency • Vents vertically or horizontally with 3" PVC, CPVC or ABS-DWV • Concentric and twin pipe venting options • Direct vent, room-sealed combustion • Ability to cascade units for increased flow rates • Suitable for recirculating applications • Outdoor installation using optional kit • Available in natural gas (NG) or liquid propane (LP) • 15-year warranty • Power Input NG: 199,000 BTU/Hr • Maximum Flow to Activate 0.65 gallons per minute (gpm) • Flow Rates:

35°F rise@ 10.1 gpm
45°F rise@ 8.0 gpm
55°F rise@ 6.4 gpm
65°F rise@ 5.5 gpm
77°F rise@ 4.6 gpm
90°F rise@ 3.9 gpm

• Energy Factor NG: .89 • Thermal Efficiency NG: 92% • Dimensions H: 30½" W: 17.875" D: 11¼" • Weight 74 lbs. • Modulating Gas Valve Min Firing Rate: 19,900 BTU/Hr, Max Firing Rate: 199,000 BTU/Hr • Ignition Electronic Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas Specifications: • Gas Connection ¾" Male NPT • Water Connections ¾" Male NPT • NG Gas Pressure Minimum: 4" WC, Maximum: 14" WC • Water Pressure Minimum: 30 PSI, (Well): 40 PSI, Maximum: 150 PSI • Electrical Supply 120V - (plugs in) • Installation Clearance:

Top: 12"
Front: 1"
Back: 0"
Sides: 1"
Floor: 12"

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Product Reviews

Last update: Jun 16, 2009

Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas Reviews

Displaying 1 - 4 of 4 Reviews

[32 of 32 customers found this review helpful]

Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas Review

Excellent top of the line tankless

★★★★★

5.0

"While it is expensive, it is cheaper to install than most other water heaters because I could use PVC pipe. Also, consider getting the concentric vent kit... so you only have to drill one hole in the wall of the house. "

Bottom Line Yes, I would recommend this to a friend

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Jul 12 2008

John

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Homeowner

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[0 of 2 customers found this review helpful]

Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas Review

do not buy bosch

★☆☆☆☆

1.0

"do not buy this product. we have had numerous technicians and plumbers trying to get ours straightened out. we get a gas pressure error all the time from this thing. we've had the gas lines tested and there is no pressure problem - all other gas powered appliances in the house are fine as well. …" Read Full Review »

Bottom Line No, I would not recommend this to a friend

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Jan 24 2009

Uncle Toto

caldwell, nj

I am:

Homeowner

Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas Review

Excellent piece of equipment

★★★★★

5.0

"The product does everything it promises - reliable source of hot water and my gas bill gas dropped "

Bottom Line Yes, I would recommend this to a friend

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Jun 16 2009

Robert

Acton, MA

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[1 of 10 customers found this review helpful]

Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas Review

bosch gwhc800esng worth the money

★★★★★

5.0

"replaced a navien condensing tankless unit that had multiple bad parts from day one, The Bosch gwhc800esn by far is built to last. very simple to install and control it seems to be the best condensing tankless water heater in the industry along with its great warranty. the navien was cheaper but the …" Read Full Review »

Bottom Line Yes, I would recommend this to a friend

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Jan 24 2009

sugarshane

northern california

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Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas

Bosch ProTankless GWH C 800 ES NG Tankless Water Heater, Natural Gas