Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) vs Hearthstone Quality Home Heating Products Lincoln 8060
Both stoves carry the same certified emission rate: 1.1 g/hr. They tie on efficiency at 79% HHV. The Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) produces more peak heat (31,581 vs 20,507 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 1 cu ft), which generally means longer burns between reloads.
| Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) | Hearthstone Quality Home Heating Products Lincoln 8060 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Hybrid | Hybrid |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.1 g/hr | 1.1 g/hr |
| Efficiency (HHV) | 79 % | 79 % |
| Heat output (low) | 13876 BTU/h | 14545 BTU/h |
| Heat output (high) | 31581 BTU/h | 20507 BTU/h |
| Firebox volume | 1.32 cu ft | 1 cu ft |
| Carbon monoxide | 0.52 g/min | 0.6 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 | 335-22 |
| Covered model numbers | Green Mountain 40 Series: Green Mountain 40 (8640), Craftsbury 2 (8392), Hipster 14 (AMB8240) | Lincoln 8060, Green Mountain 20 (8620), Dorset (8330) |
Frequently asked questions
Which burns cleaner, the Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) or the Hearthstone Quality Home Heating Products Lincoln 8060?
They are tied: both are certified at 1.1 g/hr of particulates.
Are the Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) and Hearthstone Quality Home Heating Products Lincoln 8060 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.