HTH 01251 AX
Hamilton Engineering · Commercial Boiler
ENERGY STAR CertifiedCommercial Boilers →
Thermal Efficiency
98.1%
Input Rate
1250MBTU/hr
Turndown Ratio
10.00
Application
Outdoor
High thermal eff
Hamilton Engineering HTH 01251 AX: thermal eff 98.1%, better than 95% of commercial boilers (category median 96.5%).
Where this model sits
Input1250MBTU/hr
300median 7502500
Thermal Eff98.1%
94median 96.598.7
Better than 95% of commercial boilers.
The Hamilton Engineering HTH 01251 AX is a 1250 MBTU/hr commercial boiler. At 98.1 % it ranks better than 96% of the 386 certified commercial boilers models.
Specifications
| Performance | |
|---|---|
| Thermal Efficiency | 98.1% |
| Full-Load Input Rate | 1250MBTU/hr |
| Turndown Ratio | 10.00 |
| Configuration | |
| Application | Outdoor |
| Control Type | Multi-stage |
| Model Name | Torus Outdoor WB1251X |
| Identifiers | |
| Model Number | HTH 01251 AX |
| ENERGY STAR ID | ES_1083631_HTH 01251 AX_07212026010147_10218687548 |
| Partner | Mestek, Inc. |
| Date Qualified | 2026-08-04 |
| Available From | 2026-03-16 |
| Markets | United States, Canada |
Documentation
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