Bosch Greentherm C 1050 ES NG 10.5 GPM 199000 BTU Condensing Natural Gas

SKU: 7736501515
List price: $1,855.00

Condensing technology with 96% efficiency and ENERGY STAR rating Greentherm C 1050 ES has Energy Factor to 0.94, and this tankless water heater is equipped with an automated and fully modulating bypass for unsurpassed DHW temperature stability.

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Condensing tankless water heater is a top performance, fully condensing gas tankless water heater from Bosch. This 199,000 BTU heater is designed for residential applications and can deliver hot water up to 140 degrees F with a 10.5 GPM flow rate.

This Energy Star approved tankless water heater qualifies for the 2013 Federal Tax Credit and can produce enough hot water for 2-3 major applications in most homes.

Unlike traditional non-condensing models, condensing technology captures heat from the exhaust gas and uses it to preheat the incoming cold water. This increases efficiency and reduces emissions -- well ahead of the 2012 Low NOX emissions standards set by SCAQMD (California -- South Coast Air Quality Management District).

This heater features an electronic ignition system and can vent through either 3 inch or 4 inch diameter PVC vent pipe either through the side wall or up through the roof. Two concentric venting options are available including a polypropylene concentric up-and-out side-wall venting option for single units. Two to four units can now be exhausted through a single 6" polypropylene vent pipe.

The Bosch Greentherm model C 1050 ES has an Energy Factor up to 0.94 and is equipped with an automated and fully modulating bypass for unsurpassed DHW temperature stability.

This heater comes with built-in freeze protection and a water filter that is externally accessible, but does not come with a PRV.

The Bosch Greentherm C1050ES is the direct replacement for the Bosch Therm C1050ES and the Bosch GWH C 800 ES.

  • Improved energy factor by 2 points, up to 0.94
  • Benchmark temperature stability achieved with an active bypass
  • Inlet water filter featuring easy external access
  • New venting options
  • Concentric up-and-out venting for single boilers and two to four unit single pipe cascades
  • Introducing the water heater mobile app for sizing and technical documentation downloads

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Greentherm C 1050 ES Specifications
Condensing/Non-Condensing Condensing
Application Residential or Commercial
Max Input (BTU) 199,000
Min Input (BTU) 19,900
Capacity at 35?F Rise (gpm) 10.5
Capacity at 55?F Rise (gpm) 6.7
Intelligent Cascading Yes
Min Flow Rate 0.50 gpm
Temp Range (?F) 100 - 140
Temp Stability (?F) +/- 2
Default Temp (?F) 120
Energy Factor .95
Thermal Efficiency 96%
Installation Options Indoor
Dimensions (w x h x d) 17.875" x 30" x 11"
Weight (lbs.) 74
Inlet Connection 3/4" NPT
Outlet Connection 3/4" NPT
Gas Connection 3/4" NPT
Max Water Pressure 150 psi
Min Water Pressure 30 psi
Min NG Presure 3.5" WC
Condensing Heat Exchanger Aluminum
Venting Options PVC, CPVC, ABS, Cat III, Stainless Steel
Outdoor Kit and Polypropylene
Vent Maximun Run 63'
Energy Star Rated Yes
For models C 1210 ES/ESC : 35?F capacity is based on installation with a mixing valve to overcome typical pressure loss through the water heater and system. -
* 3 Years if used in direct recirculation applications See full details in "Warranty" section
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