Woodmaster Mini Boiler
Previously certified
EPA lists Woodmaster Mini Boiler under Northwest Manufacturing Inc as a previously certified hydronic heater.
The listed emission rate is 0.11 pounds per million BTU.
The listed HHV efficiency is 65 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Previously certified |
| Type | Hydronic Heater |
| Subtype | Non-Catalytic Stove |
| Emission | 0.11 pounds per million BTU |
| HHV efficiency | 65 percent |
| Heat output | 101,577 BTU/hr maximum |
| Heat output maximum | 101,577 BTU/hr |
| Firebox | Not applicable |
| CO | Not listed |
| Certified fuel | Wood Pellets |
| Test method | Not listed |
| 2020 NSPS | No |
| Thermal storage | No |
Retail names in the model line
These are the names split from EPA's model cell. They are aliases for this line, not separate listings.
- Woodmaster Mini Boiler
Other model lines from this manufacturer
- Woodmaster CleanFire 400 Previously certified
- Woodmaster Ultra 30 Previously certified
Nearest model lines by EPA figures
Nearest means the smallest absolute difference on that EPA figure, among other Hydronic Heater model lines that list it. Ties are ordered by model name.
Emission
- SMART HV23 — 0.11 pounds per million BTU
- Vedolux 37 — 0.11 pounds per million BTU
- Vedolux 55 — 0.11 pounds per million BTU
- Central Boiler Classic Edge 360, WoodMaster– CleanFire 300 — 0.12 pounds per million BTU
- Central Boiler Classic Edge 760, WoodMaster– CleanFire 700 — 0.1 pounds per million BTU
HHV efficiency
- BioWIN 152 — 65 percent
- BioWIN 152 — 65 percent
- GARN WHS-1500H — 65 percent
- GARN WHS-1500V — 65 percent
- Optimizer 350 — 65 percent
Heat output
- Woodmaster CleanFire 400 — 102,408 BTU/hr maximum
- Woodmaster Ultra 30 — 102,716 BTU/hr maximum
- PES 25-32 — 99,797 BTU/hr maximum
- G Class G3 — 26,235–182,387 BTU/hr
- Classic Edge 560.1, CleanFire 500.1 — 24,564–171,956 BTU/hr
Northwest Manufacturing Inc hub · EPA Certified Wood Heater Database