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Bosch - Energy Star 83% Tankless Water Heaters

The Bosch 83% tankless water heaters will meet the demands of the busy household and can be installed almost anywhere. Our tankless water heaters offer higher flow rates, sealed combustion, vertical or horizontal venting, and an outdoor installation option.

83% thermal efficiency
Direct vent, vertically or horizontally with AL29-4C stainless steel Category III venting
Exterior Mount
Direct Electronic Ignition no pilot light
Suitable for recirculating applications (3-year warranty)
Solar application-ready
Continuous hot water at up to 9.2 GPM
Heavy duty heat exchanger
Whole House Water Heating Solution
On-Board diagnostics and safety monitoring
Only on when you need It, no standby loss!

MODEL	Max MBtuH	Flow Rate GPM	UEF	Temp. Range	Dimensions HxWxD	Weight Lbs.
Therm 830 ES	175.0	0.50	83.00	100-140	30.5 x 17.875 x 11.25	67
Therm 660 EF	140.0	0.50	83.00	100-160	20.5 x 13.8 x 6.7	36
Therm 660 EFO	140.0	0.50	83.00	100-160	20.5 x 13.8 x 6.7	67
THERM 940 ES	199.0	0.50	83.00	100-140	30.5 x 17.875 x 11.25	67
THERM 940 ESO	199.0	0.50	83.00	100-140	30 x 18 x 11	67

Warranty Information

Heat Exchanger for 180 months - Residential

Heat Exchanger for 60 months - Commercial

Heat Exchanger for 24 months - If used in recirculating applications

All Parts for 60 months - Residential and Commercial

Available Documents

22-5061.pdf (Customer Information)

22-5185.pdf (Tankless Pricing, Pricing)

ProductsWe Carry

Bosch - Energy Star 83% Tankless Water Heaters

Warranty Information

Available Documents

Products
We Carry