Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) vs Jotul North America (Jotul U.S.A., Inc.) F602 V3
The Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) is the cleaner burner: 1.1 g/hr certified particulate emissions versus 1.4 g/hr. The Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) is the more efficient unit: 79% versus 77% HHV — more heat from every cord. The Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) produces more peak heat (31,581 vs 23,415 BTU/h), suiting roughly 900–1,250 sq ft. The Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) has the larger firebox (1.32 vs 0.79 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) is a hybrid and the Jotul North America (Jotul U.S.A., Inc.) F602 V3 a catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) | Jotul North America (Jotul U.S.A., Inc.) F602 V3 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Hybrid | Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.1 g/hr | 1.4 g/hr |
| Efficiency (HHV) | 79 % | 77 % |
| Heat output (low) | 13876 BTU/h | 5994 BTU/h |
| Heat output (high) | 31581 BTU/h | 23415 BTU/h |
| Firebox volume | 1.32 cu ft | 0.79 cu ft |
| Carbon monoxide | 0.52 g/min | 1.3 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 210-19 | 380-24 |
| Covered model numbers | Green Mountain 40 Series: Green Mountain 40 (8640), Craftsbury 2 (8392), Hipster 14 (AMB8240) | F602 V3 |
Frequently asked questions
Which burns cleaner, the Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) or the Jotul North America (Jotul U.S.A., Inc.) F602 V3?
The Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640): 1.1 g/hr certified particulate emissions versus 1.4 g/hr for the Jotul North America (Jotul U.S.A., Inc.) F602 V3.
Are the Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) and Jotul North America (Jotul U.S.A., Inc.) F602 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.