Jotul North America (Jotul U.S.A., Inc.) F602 V3 vs Stove Builder International 1.4 Series (Osburn 950
The Jotul North America (Jotul U.S.A., Inc.) F602 V3 is the cleaner burner: 1.4 g/hr certified particulate emissions versus 1.8 g/hr. The Jotul North America (Jotul U.S.A., Inc.) F602 V3 is the more efficient unit: 77% versus 74% HHV — more heat from every cord. The Stove Builder International 1.4 Series (Osburn 950 produces more peak heat (26,500 vs 23,415 BTU/h), suiting roughly 750–1,050 sq ft. The Stove Builder International 1.4 Series (Osburn 950 has the larger firebox (1.55 vs 0.79 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Jotul North America (Jotul U.S.A., Inc.) F602 V3 is a catalytic stove and the Stove Builder International 1.4 Series (Osburn 950 a non-catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Jotul North America (Jotul U.S.A., Inc.) F602 V3 | Stove Builder International 1.4 Series (Osburn 950 | |
|---|---|---|
| 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 | 1.8 g/hr |
| Efficiency (HHV) | 77 % | 74 % |
| Heat output (low) | 5994 BTU/h | 12100 BTU/h |
| Heat output (high) | 23415 BTU/h | 26500 BTU/h |
| Firebox volume | 0.79 cu ft | 1.55 cu ft |
| Carbon monoxide | 1.3 g/min | 1.2 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | No |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 380-24 | 289-21 |
| Covered model numbers | F602 V3 | 1.4 Series (Osburn 950, Escape 1200, Gateway 1400, Solution 1.4, Spark II, Fox, Déco Nano, S250, Harmony 1.4, HES140, Blue Ridge 100) |
Frequently asked questions
Which burns cleaner, the Jotul North America (Jotul U.S.A., Inc.) F602 V3 or the Stove Builder International 1.4 Series (Osburn 950?
The Jotul North America (Jotul U.S.A., Inc.) F602 V3: 1.4 g/hr certified particulate emissions versus 1.8 g/hr for the Stove Builder International 1.4 Series (Osburn 950.
Are the Jotul North America (Jotul U.S.A., Inc.) F602 V3 and Stove Builder International 1.4 Series (Osburn 950 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.