G Series G4000
Previously certified
EPA lists G Series G4000 under Heatmaster Furnaces Inc. (SteelTech Inc.) as a previously certified hydronic heater.
The listed emission rate is 0.1 pounds per million BTU.
The listed HHV efficiency is 86 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 | 0.1 pounds per million BTU |
| HHV efficiency | 86 percent |
| Heat output | 16,203–99,840 BTU/hr |
| Heat output maximum | 110,000 BTU/hr |
| Firebox | 8.5 cu ft |
| CO | 1.6 g/min |
| Certified fuel | Cord Wood |
| Test method | Not listed |
| 2020 NSPS | Yes |
| 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.
- G Series G4000
Other model lines from this manufacturer
- G Series G10000 Previously certified
- G Series G7000 Previously certified
- P7000 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
- Central Boiler Classic Edge 760, WoodMaster– CleanFire 700 — 0.1 pounds per million BTU
- EasyPell — 0.1 pounds per million BTU
- G Series G4000 — 0.1 pounds per million BTU
- SMART HV23 — 0.11 pounds per million BTU
- Vedolux 37 — 0.11 pounds per million BTU
HHV efficiency
- Alpha-100 — 86 percent
- Alpha-60 — 86 percent
- BioWin 150 — 86 percent
- BioWin 260 — 86 percent
- Central Boiler Classic Edge 960, WoodMaster CleanFire 900 — 86 percent
Heat output
- G Series G4000 — 16,203–99,840 BTU/hr
- RTB54 (TS) — 58,000 BTU/hr maximum
- PE16 — 57,000 BTU/hr maximum
- S3 Turbo 30 — 12,997–99,594 BTU/hr
- Kedel RTB54 — 60,000 BTU/hr maximum