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Bosch 940 ES NG Tankless Water Heater

Natural Gas Tankless Water Heater Bosch 940 ES NG

Brand: Bosch
SKU: 940 ES NG
Mfg Number:
  • Fuel Type: Natural Gas
  • Input (BTU): 199000
  • Ignition Type: Electronic
  • Energy Factor: 0.83
Availability: Out of Stock
Product Information
Retail: $2,081.52 Price: $1,784.16
You Save: $297.36 (14.3%)


The 940 ES NG is the highest capacity non-condensing model which is designed to meet the demands of busy households, and offers premium features you expect from Bosch. With 83% thermal efficiency and 199,000 BTU maximum input, this natural gas tankless water heater supplies 9.4 gallons per minute of hot water at 35F degree rise. This Bosch model is Energy Star rated and mobile home certified. You can also install it almost anywhere thanks to its sealed combustion and dual-fan technology.

Bosch 940 ES NG Tankless Water Heater Specifications
ItemWater Heater
Gas Connection (In.)3/4
Gas TypeNatural
Input (BTU)199,000
Ignition TypeElectronic
Draft Hood Size (In.)3
Energy Factor0.83
Depth (In.)11-1/4
Width (In.)17-7/8
Height (In.)30-1/2
Water Connection (In.)3/4
GPM @ 45F Rise7.2
GPM @ 90F Rise3.6
Manufacturers Warranty Length15 Year Heat Exchanger And 3 Year Parts
StandardsCSA And ANSI Z21.10.4
ComplianceCertified For Use In Potable Water Applications in CA and VT
IncludesMounting Bracket
Green Environmental AttributeCommercial Gas Heater Has Thermal Efficiency Rating = 0.90
Green Certification or Other RecognitionENERGY STAR Rated

Bosch 940 ES NG Gas Tankless Water Heater Features:

  • Highest capacity non-condensing model
  • 83%+ thermal efficiency
  • 199,000 BTU maximum input
  • 9.4 gallons per minute capacity at 35F degree rise
  • Minimum activation flow rate of 0.5 gallons per minute
  • Electronic ignition and patented burner design
  • Exclusive safety and precision controls
  • Vents vertically or horizontally with 3" or 4" stainless steel
  • 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
  • Mobile home certified

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