Bosch Gas Tankless Water Heater 940 ES LP


Status: In Stock

was US$1,735.00

now US$1,561.50



At 199,000 maximum BTUs the Bosch 940 ES is our highest capacity non-condensing tankless water heater. The Bosch Therm 940 ES was designed to meet the demands of busy households and offers the premium features you expect from Bosch. This model can be installed almost anywhere thanks to its sealed combustion and dual-fan technology.

It features an electronic ignition system and requires either 3 inch or 4 inch diameter stainless steel vent pipe and can be vented either through the side wall or up through the roof.

This heater is Energy Star rated.

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 Therm 940ES is the direct replacement for the Bosch GWH 715 ES and the Bosch AquaStar 2700ES.



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 and LP models
Also available as an outdoor model, 940 EFO
Mobile home certified



Therm 940 ES Specifications
Condensing/Non-Condensing Non-Condensing
Application Residential or Commercial
Max Input (BTU) 199,000
Min Input (BTU) 19,900
Capacity at 35°F Rise (gpm) 9.4
Capacity at 55°F Rise (gpm) 6.0
Intelligent Cascading Yes
Min Flow Rate 0.50 gpm
Temp Range (°F) 100 - 140
Temp Stability (°F) +/-2
Default Temp (°F) 122
Energy Factor .83
Thermal Efficiency 83%
Installation Options Indoor or Outdoor (for outdoor, kit required)
Dimensions (w x h x d) 17 7/8" x 30½" x 11¼"
Weight (lbs.) 67
Inlet Connection ¾" NPT
Outlet Connection ¾" NPT
Gas Connection ¾" NPT
Max Water Pressure 150 psi
Min Water Pressure 30 psi
Min NG Presure 3.5" WC
Condensing Heat Exchanger n/a
Venting Options Stainless Steel
Vent Maximun Run 61¼'
Energy Star Rated Yes



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