Ecotemp furnaces
31 furnaces listed under Ecotemp.
| Model | AFUE | Costs to run |
|---|---|---|
| WFJT060B048A | 97.00 | $23.95 per million BTU of heat |
| WFJT080B048A | 97.00 | $23.95 per million BTU of heat |
| WFJT100C060A | 97.00 | $23.95 per million BTU of heat |
| WFSX060B048B* | 97.00 | $23.95 per million BTU of heat |
| WFSX080B048B* | 97.00 | $23.95 per million BTU of heat |
| WFST060B048A | 96.30 | $24.12 per million BTU of heat |
| WFJT060B048A*H | 96.30 | $24.12 per million BTU of heat |
| WFSX100C060B* | 96.30 | $24.12 per million BTU of heat |
| WFST080B048A | 96.20 | $24.15 per million BTU of heat |
| WFJT080B048A*H | 96.20 | $24.15 per million BTU of heat |
| WFST100C060A | 96.10 | $24.17 per million BTU of heat |
| WFJT100C060A*H | 96.10 | $24.17 per million BTU of heat |
| WFSX120D066B* | 96.10 | $24.17 per million BTU of heat |
| WFST040A030A | 96.00 | $24.20 per million BTU of heat |
| WFSX040A030B* | 96.00 | $24.20 per million BTU of heat |
| WFST060B048A*D | 95.00 | $24.45 per million BTU of heat |
| WFST080B048A*D | 95.00 | $24.45 per million BTU of heat |
| WFJT060B048A*D | 95.00 | $24.45 per million BTU of heat |
| WFJT080B048A*D | 95.00 | $24.45 per million BTU of heat |
| WFJT100C060A*D | 95.00 | $24.45 per million BTU of heat |
| WFSU040B036B | 95.00 | $24.45 per million BTU of heat |
| WFST100C060A*D | 95.00 | $24.45 per million BTU of heat |
| WFSU100C060B | 95.00 | $24.45 per million BTU of heat |
| WFST040A030A*D | 95.00 | $24.45 per million BTU of heat |
| WFSX120D066B*D | 95.00 | $24.45 per million BTU of heat |
| WFSU060B048B | 95.00 | $24.45 per million BTU of heat |
| WFSX040A030B*D | 95.00 | $24.45 per million BTU of heat |
| WFSX060B048B*D | 95.00 | $24.45 per million BTU of heat |
| WFSX080B048B*D | 95.00 | $24.45 per million BTU of heat |
| WFSX100C060B*D | 95.00 | $24.45 per million BTU of heat |
| WFSU080C060B | 95.00 | $24.45 per million BTU of heat |
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.