Jotul North America (Jotul U.S.A., Inc.) F35 vs Stove Builder International SR-3.2 Series: St-Louis
The Jotul North America (Jotul U.S.A., Inc.) F35 is the cleaner burner: 1.2 g/hr certified particulate emissions versus 1.8 g/hr. The Stove Builder International SR-3.2 Series: St-Louis is the more efficient unit: 76% versus 69% HHV — more heat from every cord. The Stove Builder International SR-3.2 Series: St-Louis produces more peak heat (83,857 vs 59,443 BTU/h), suiting roughly 2,400–3,350 sq ft. The Stove Builder International SR-3.2 Series: St-Louis has the larger firebox (3.15 vs 1.57 cu ft), which generally means longer burns between reloads.
| Jotul North America (Jotul U.S.A., Inc.) F35 | Stove Builder International SR-3.2 Series: St-Louis | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Non-Catalytic Stove | Non-Catalytic Stove |
| Certified fuel | Cord Wood | Crib Wood |
| Emission rate | 1.2 g/hr | 1.8 g/hr |
| Efficiency (HHV) | 69 % | 76 % |
| Heat output (low) | 13533 BTU/h | 29605 BTU/h |
| Heat output (high) | 59443 BTU/h | 83857 BTU/h |
| Firebox volume | 1.57 cu ft | 3.15 cu ft |
| Carbon monoxide | 1.35 g/min | 1.4 g/min |
| 25C tax credit eligible (≥75% HHV) | No | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 317-22 | 398-25 |
| Test method | — | Alternate Test Method Used |
| Covered model numbers | F35 | SR-3.2 Series: St-Louis, Helia, Elevate, Chambly, HEA200 |
Frequently asked questions
Which burns cleaner, the Jotul North America (Jotul U.S.A., Inc.) F35 or the Stove Builder International SR-3.2 Series: St-Louis?
The Jotul North America (Jotul U.S.A., Inc.) F35: 1.2 g/hr certified particulate emissions versus 1.8 g/hr for the Stove Builder International SR-3.2 Series: St-Louis.
Are the Jotul North America (Jotul U.S.A., Inc.) F35 and Stove Builder International SR-3.2 Series: St-Louis 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.