Bosch Gas Tankless Water Heaters Therm 940 ES

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

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

Brochure

Owner's Manual

Warranty