GX Series GX30
Previously certified
EPA lists GX Series GX30 under Hawken Energy as a previously certified hydronic heater.
The listed emission rate is 0.17 pounds per million BTU.
The listed HHV efficiency is 67 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 | 0.17 pounds per million BTU |
| HHV efficiency | 67 percent |
| Heat output | 242,090 BTU/hr maximum |
| Heat output maximum | 242,090 BTU/hr |
| Firebox | Not listed |
| CO | Not listed |
| Certified fuel | Cord Wood |
| 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.
- GX Series GX30
Other model lines from this manufacturer
- GX Series GX 10 Previously certified
- GX Series GX15 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 350 — 0.18 pounds per million BTU
- Classic Edge 750 — 0.18 pounds per million BTU
- E-Classic 1450 — 0.18 pounds per million BTU
- E-Classic 3250 IR — 0.18 pounds per million BTU
- FHG 20/30 — 0.18 pounds per million BTU
HHV efficiency
- G2-G2 — 67 percent
- Pellet Burner Easy 35 — 67 percent
- SE110 — 67 percent
- Vedolux 55 — 67 percent
- Woodmaster CleanFire 400 — 67 percent
Heat output
- Classic Edge 750 — 240,362 BTU/hr maximum
- E-Classic 3250 IR — 245,000 BTU/hr maximum
- ECO-HK 120 Multifuel — 53,054–416,833 BTU/hr
- GT Series GT-6000 — 250,000 BTU/hr maximum
- Pellet Burner Easy 35 — 38,666–429,452 BTU/hr