Viessmann boilers
22 boilers listed under Viessmann.
| Model | AFUE | Costs to run |
|---|---|---|
| CU3A-94 | 95.00 | $24.45 per million BTU of heat |
| CU3A-199 | 95.00 | $24.45 per million BTU of heat |
| CU3A-160 | 95.00 | $24.45 per million BTU of heat |
| CU3A-125 | 95.00 | $24.45 per million BTU of heat |
| B2TB-125 | 95.00 | $24.45 per million BTU of heat |
| B2HE-85 | 95.00 | $24.45 per million BTU of heat |
| B2HE-199 | 95.00 | $24.45 per million BTU of heat |
| B2HE-150 | 95.00 | $24.45 per million BTU of heat |
| B2HE-120 | 95.00 | $24.45 per million BTU of heat |
| B1KE-199 | 95.00 | $24.45 per million BTU of heat |
| B1KE-120 | 95.00 | $24.45 per million BTU of heat |
| B1HE-85 | 95.00 | $24.45 per million BTU of heat |
| B1HE-199 | 95.00 | $24.45 per million BTU of heat |
| B1HE-150 | 95.00 | $24.45 per million BTU of heat |
| B1HE-120 | 95.00 | $24.45 per million BTU of heat |
| B2HA-285 | 92.00 | $25.25 per million BTU of heat |
| VR1-91 | 87.00 | Not published |
| VR1-245 | 87.00 | Not published |
| VR1-196 | 87.00 | Not published |
| VR1-161 | 87.00 | Not published |
| VR1-140 | 87.00 | Not published |
| VR1-105 | 87.00 | Not published |
Computed from electricity at 18.34¢/kWh, the EIA average for US in June 2026 and gas at $24.09/Mcf for June 2026. A kilowatt-hour is 3412 BTU. Gas volume is converted to heat at 1.037 million BTU per thousand cubic feet, EIA's published average. This is a rate times a rating, not a prediction of your bill.
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Source: ENERGY STAR certified product data, published by the U.S. EPA and used with attribution. This is a register of certified models, not of every model on the market. ENERGY STAR is a registered mark of the U.S. EPA; this site is not affiliated with or endorsed by EPA or DOE.