Product Lines We Carry
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 | Configuration | Max MBtuH | Min MBtuH | Flow Rate GPM | UEF | Temp. Range | Dimensions HxWxD | Weight Lbs. |
|---|---|---|---|---|---|---|---|---|
| Therm 830 ES | 175.0 | 0.0 | 0.50 | 83.00 | 100-140 | 30.5 x 17.875 x 11.25 | 67 | |
| Therm 660 EF | 140.0 | 0.0 | 0.50 | 83.00 | 100-160 | 20.5 x 13.8 x 6.7 | 36 | |
| Therm 660 EFO | 140.0 | 0.0 | 0.50 | 83.00 | 100-160 | 20.5 x 13.8 x 6.7 | 67 | |
| THERM 940 ES | 199.0 | 0.0 | 0.50 | 83.00 | 100-140 | 30.5 x 17.875 x 11.25 | 67 | |
| THERM 940 ESO | 199.0 | 0.0 | 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
- View Document (Customer Information)
- View Document (Tankless Pricing, Pricing)