Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) vs Pacific Energy Fireplace Products Limited Summit LE
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 1.8 g/hr. The Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) is the more efficient unit: 79% versus 74% HHV — more heat from every cord. The Pacific Energy Fireplace Products Limited Summit LE produces more peak heat (41,275 vs 31,581 BTU/h), suiting roughly 1,200–1,650 sq ft. The Pacific Energy Fireplace Products Limited Summit LE has the larger firebox (2.5 vs 1.32 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 Pacific Energy Fireplace Products Limited Summit LE a non-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) | Pacific Energy Fireplace Products Limited Summit LE | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Hybrid | Non-Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.1 g/hr | 1.8 g/hr |
| Efficiency (HHV) | 79 % | 74 % |
| Heat output (low) | 13876 BTU/h | 16102 BTU/h |
| Heat output (high) | 31581 BTU/h | 41275 BTU/h |
| Firebox volume | 1.32 cu ft | 2.5 cu ft |
| Carbon monoxide | 0.52 g/min | 0.02 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | No |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 210-19 | 104-17 |
| Covered model numbers | Green Mountain 40 Series: Green Mountain 40 (8640), Craftsbury 2 (8392), Hipster 14 (AMB8240) | Summit LE, Summit Classic LE, Alderlea T6 LE, Summit Insert LE |
Frequently asked questions
Which burns cleaner, the Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) or the Pacific Energy Fireplace Products Limited Summit LE?
The Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640): 1.1 g/hr certified particulate emissions versus 1.8 g/hr for the Pacific Energy Fireplace Products Limited Summit LE.
Are the Hearthstone Quality Home Heating Products Green Mountain 40 Series: Green Mountain 40 (8640) and Pacific Energy Fireplace Products Limited Summit LE 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.