G-Class G2Plus
Currently certified
EPA lists G-Class G2Plus under Polar Furnace Manufacturing Inc. as a currently certified hydronic heater.
The listed emission rate is 0.07 pounds per million BTU.
The listed HHV efficiency is 81 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Currently certified |
| Type | Hydronic Heater |
| Subtype | Non-Catalytic Stove |
| Emission | 0.07 pounds per million BTU |
| HHV efficiency | 81 percent |
| Heat output | 34,835–183,307 BTU/hr |
| Heat output maximum | 183,307 BTU/hr |
| Firebox | 9.27 cu ft |
| CO | 1.7 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-Class G2Plus
Other model lines from this manufacturer
- G Class G3 Previously certified
- G2-G2 Previously certified
- G3-G3 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
- Classic Edge 560.1, CleanFire 500.1 — 0.07 pounds per million BTU
- Classic Edge 865, CleanFire 1800 — 0.07 pounds per million BTU
- ECO-HK 70 Multifuel — 0.07 pounds per million BTU
- G Series G100/G100s — 0.07 pounds per million BTU
- G Series G200-2/G200s — 0.07 pounds per million BTU
HHV efficiency
- G Series G7000 — 81 percent
- G Series G7000 — 81 percent
- P4 Pellet 60 — 81 percent
- PES 25-32 — 81 percent
- Central Boiler Classic Edge 360, WoodMaster– CleanFire 300 — 82 percent
Heat output
- P4 Unit 32 — 109,000 BTU/hr maximum
- PE32 — 109,000 BTU/hr maximum
- Vedolux 30 — 109,529 BTU/hr maximum
- Pellematic 56 — 28,020–191,203 BTU/hr
- Mahoning Skye Series V — 110,000 BTU/hr maximum
Polar Furnace Manufacturing Inc. hub · EPA Certified Wood Heater Database