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Bosch C 1050 ES NG Tankless Water Heater

Natural Gas Tankless Water Heater Bosch C 1050 ES NG

Brand: Bosch
SKU: C 1050 ES NG
Mfg Number:
  • Fuel Type: Natural Gas
  • Input (BTU): 199000
  • Ignition Type: Electronic
  • Energy Factor: 0.91
Availability: Out of Stock
Product Information
Retail: $3,218.04 Price: $2,758.32
You Save: $459.72 (14.3%)


This C 1050 ES NG model is another top performing, fully condensing natural gas tankless water heater from Bosch. This model offers high flow rates, efficiency and the most advanced features in tankless technology, yet requires only 199,000 BTU/Hr input. Energy Star rated, this tankless water heater offers 10.5 gallons per minute capacity at 35F degree rise. Ideal for residential or commercial applications, this indoor unit features electronic ignition and patented burner design and has exclusive safety and precision controls. This unit can also be used in solar thermal, recirculation applications.

Bosch C 1050 ES NG Tankless Water Heater Specifications
ItemCondensing Water Heater
Gas Connection (In.)3/4
Gas TypeNG
Input (BTU)199,000
Ignition TypeElectronic
Draft Hood Size (In.)3
Energy Factor0.91
Depth (In.)11-1/4
Width (In.)17-7/8
Height (In.)30-1/2
Water Connection (In.)3/4
GPM @ 45F Rise8
GPM @ 90F Rise3.9
Manufacturers Warranty Length15 Year Heat Exchanger And 3 Year Parts
StandardsCSA And ANSIZ21.10.3
ComplianceCertified For Use In Potable Water Applications in CA and VT
IncludesPressure Relief Valve And Mounting Bracket
Green Environmental AttributeCommercial Gas Heater Has Thermal Efficiency Rating = 0.90
Green Certification or Other RecognitionENERGY STAR Rated

Bosch C 1050 ES NG Gas Tankless Water Heater Features:

  • Suitable for indoor and outdoor installations
  • 92%+ thermal efficiency
  • 199,000 BTU maximum input
  • 10.5 gallons per minute capacity at 35F degree rise
  • Minimum activation flow rate of 0.65 gallons per minute
  • Electronic ignition and patented burner design
  • Exclusive safety and precision controls
  • Direct vent, vertically or horizontally with Stainless Steel, PVC, CPVC or ABS-DWV
  • Concentric and twin pipe venting options
  • Can be used in solar thermal, recirculation applications
  • Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
  • Available in NG

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