Hearthstone Quality Home Heating Products Green Mountain 80 8680 vs Pacific Energy Fireplace Products Limited TN25 C
The Hearthstone Quality Home Heating Products Green Mountain 80 8680 is the cleaner burner: 0.67 g/hr certified particulate emissions versus 1.1 g/hr. The Hearthstone Quality Home Heating Products Green Mountain 80 8680 is the more efficient unit: 81% versus 76% HHV — more heat from every cord. The Hearthstone Quality Home Heating Products Green Mountain 80 8680 produces more peak heat (33,396 vs 29,202 BTU/h), suiting roughly 950–1,350 sq ft. The Hearthstone Quality Home Heating Products Green Mountain 80 8680 has the larger firebox (3.16 vs 1.98 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Hearthstone Quality Home Heating Products Green Mountain 80 8680 is a hybrid and the Pacific Energy Fireplace Products Limited TN25 C a catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Hearthstone Quality Home Heating Products Green Mountain 80 8680 | Pacific Energy Fireplace Products Limited TN25 C | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Hybrid | Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 0.67 g/hr | 1.1 g/hr |
| Efficiency (HHV) | 81 % | 76 % |
| Heat output (low) | 15069 BTU/h | 13447 BTU/h |
| Heat output (high) | 33396 BTU/h | 29202 BTU/h |
| Firebox volume | 3.16 cu ft | 1.98 cu ft |
| Carbon monoxide | 0.23 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 | 162-18 | 347-23 |
| Covered model numbers | Green Mountain 80 8680 | TN25 C |
Frequently asked questions
Which burns cleaner, the Hearthstone Quality Home Heating Products Green Mountain 80 8680 or the Pacific Energy Fireplace Products Limited TN25 C?
The Hearthstone Quality Home Heating Products Green Mountain 80 8680: 0.67 g/hr certified particulate emissions versus 1.1 g/hr for the Pacific Energy Fireplace Products Limited TN25 C.
Are the Hearthstone Quality Home Heating Products Green Mountain 80 8680 and Pacific Energy Fireplace Products Limited TN25 C 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.