SF1500
Weil-McLain · Commercial Boiler
ENERGY STAR CertifiedCommercial Boilers →
Thermal Efficiency
95.8%
Input Rate
1500MBTU/hr
Turndown Ratio
6.00
Application
Indoor
Low thermal eff
Weil-McLain SF1500: thermal eff 95.8%, lower than 83% of commercial boilers (category median 96.5%).
Thermal eff: worse than 94% of the 36 comparable models within 10% of this size. Their median is 96.2 %.
Where this model sits
Input1500MBTU/hr
300median 7502500
Thermal Eff95.8%
94median 96.598.7
Lower than 83% of commercial boilers.
The Weil-McLain SF1500 is a 1500 MBTU/hr commercial boiler. At 95.8 % it ranks in the bottom 16% of the 386 certified commercial boilers models. Among similar-sized commercial boilers (within 10% of its size), it is less efficient than the peer median of 96.2 %.
Specifications
| Performance | |
|---|---|
| Thermal Efficiency | 95.8% |
| Full-Load Input Rate | 1500MBTU/hr |
| Turndown Ratio | 6.00 |
| Configuration | |
| Application | Indoor |
| Control Type | Multi-stage |
| Model Name | SF1500 |
| Identifiers | |
| Model Number | SF1500 |
| ENERGY STAR ID | ES_22947_SF1500_07162026160004_106027371 |
| Partner | The Marley Company |
| Date Qualified | 2026-08-04 |
| Available From | 2013-01-01 |
| Markets | United States, Canada |
Documentation
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