FPI/Regency Fireplace Products F2500-1 vs Jotul North America (Jotul U.S.A., Inc.) F35
The Jotul North America (Jotul U.S.A., Inc.) F35 is the cleaner burner: 1.2 g/hr certified particulate emissions versus 1.4 g/hr. The FPI/Regency Fireplace Products F2500-1 is the more efficient unit: 78% versus 69% HHV — more heat from every cord. The Jotul North America (Jotul U.S.A., Inc.) F35 produces more peak heat (59,443 vs 29,795 BTU/h), suiting roughly 1,700–2,400 sq ft. The FPI/Regency Fireplace Products F2500-1 has the larger firebox (2.3 vs 1.57 cu ft), which generally means longer burns between reloads. Combustion technology differs: the FPI/Regency Fireplace Products F2500-1 is a catalytic stove and the Jotul North America (Jotul U.S.A., Inc.) F35 a non-catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| FPI/Regency Fireplace Products F2500-1 | Jotul North America (Jotul U.S.A., Inc.) F35 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Non-Catalytic Stove |
| Certified fuel | Crib Wood | Cord Wood |
| Emission rate | 1.4 g/hr | 1.2 g/hr |
| Efficiency (HHV) | 78 % | 69 % |
| Heat output (low) | 13580 BTU/h | 13533 BTU/h |
| Heat output (high) | 29795 BTU/h | 59443 BTU/h |
| Firebox volume | 2.3 cu ft | 1.57 cu ft |
| Carbon monoxide | 0.51 g/min | 1.35 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | No |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 133-18 | 317-22 |
| Covered model numbers | F2500-1, I2500-1 | F35 |
Frequently asked questions
Which burns cleaner, the FPI/Regency Fireplace Products F2500-1 or the Jotul North America (Jotul U.S.A., Inc.) F35?
The Jotul North America (Jotul U.S.A., Inc.) F35: 1.2 g/hr certified particulate emissions versus 1.4 g/hr for the FPI/Regency Fireplace Products F2500-1.
Are the FPI/Regency Fireplace Products F2500-1 and Jotul North America (Jotul U.S.A., Inc.) F35 both EPA certified?
Yes — both appear on the U.S. EPA's current list of certified wood heaters, and every figure on this page comes from their certification records.