Blaze King Industries King KE40 (3) vs Jotul North America (Jotul U.S.A., Inc.) F 500 V3
The Jotul North America (Jotul U.S.A., Inc.) F 500 V3 is the cleaner burner: 0.5 g/hr certified particulate emissions versus 1 g/hr. The Blaze King Industries King KE40 (3) is the more efficient unit: 81% versus 78% HHV — more heat from every cord. The Jotul North America (Jotul U.S.A., Inc.) F 500 V3 produces more peak heat (38,804 vs 38,516 BTU/h), suiting roughly 1,100–1,550 sq ft. The Blaze King Industries King KE40 (3) has the larger firebox (4.55 vs 2.41 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Blaze King Industries King KE40 (3) is a catalytic stove and the Jotul North America (Jotul U.S.A., Inc.) F 500 V3 a hybrid — see the catalytic vs non-catalytic guide for what that means day to day.
| Blaze King Industries King KE40 (3) | Jotul North America (Jotul U.S.A., Inc.) F 500 V3 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Hybrid |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1 g/hr | 0.5 g/hr |
| Efficiency (HHV) | 81 % | 78 % |
| Heat output (low) | 10392 BTU/h | 14001 BTU/h |
| Heat output (high) | 38516 BTU/h | 38804 BTU/h |
| Firebox volume | 4.55 cu ft | 2.41 cu ft |
| Carbon monoxide | 0.49 g/min | 0.5 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 220-19 | 160-18 |
| Covered model numbers | King KE40 | F 500 V3 |
Frequently asked questions
Which burns cleaner, the Blaze King Industries King KE40 (3) or the Jotul North America (Jotul U.S.A., Inc.) F 500 V3?
The Jotul North America (Jotul U.S.A., Inc.) F 500 V3: 0.5 g/hr certified particulate emissions versus 1 g/hr for the Blaze King Industries King KE40 (3).
Are the Blaze King Industries King KE40 (3) and Jotul North America (Jotul U.S.A., Inc.) F 500 V3 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.