RUHBH-FT399
Ruud · Commercial Boiler
ENERGY STAR CertifiedCommercial Boilers →
Thermal Efficiency
96.5%
Input Rate
399MBTU/hr
Turndown Ratio
9.00
Application
Indoor
Ruud RUHBH-FT399: thermal eff 96.5%, around the middle of the range for commercial boilers (category median 96.5%).
Where this model sits
Input399MBTU/hr
300median 7502500
Thermal Eff96.5%
94median 96.598.7
The Ruud RUHBH-FT399 is a 399 MBTU/hr commercial boiler. At 96.5 % it ranks around the middle 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 96.5 %.
Specifications
| Performance | |
|---|---|
| Thermal Efficiency | 96.5% |
| Full-Load Input Rate | 399MBTU/hr |
| Turndown Ratio | 9.00 |
| Configuration | |
| Application | Indoor |
| Control Type | Multi-stage |
| Model Name | RUHBH-FT399 |
| Identifiers | |
| Model Number | RUHBH-FT399 |
| ENERGY STAR ID | ES_1084006_RUHBH-FT399_01292026010131_10218079215 |
| Partner | IBC Technologies Inc. |
| Date Qualified | 2026-03-24 |
| Available From | 2026-04-01 |
| Markets | United States |
Documentation
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