Hearthstone Quality Home Heating Products Green Mountain 80 8680 vs Travis Industries Answer NexGen Hybrid (2)
The Hearthstone Quality Home Heating Products Green Mountain 80 8680 is the cleaner burner: 0.67 g/hr certified particulate emissions versus 1.4 g/hr. The Hearthstone Quality Home Heating Products Green Mountain 80 8680 is the more efficient unit: 81% versus 80% HHV — more heat from every cord. The Travis Industries Answer NexGen Hybrid (2) produces more peak heat (38,594 vs 33,396 BTU/h), suiting roughly 1,100–1,550 sq ft. The Hearthstone Quality Home Heating Products Green Mountain 80 8680 has the larger firebox (3.16 vs 1.4 cu ft), which generally means longer burns between reloads.
| Hearthstone Quality Home Heating Products Green Mountain 80 8680 | Travis Industries Answer NexGen Hybrid (2) | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Hybrid | Hybrid |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 0.67 g/hr | 1.4 g/hr |
| Efficiency (HHV) | 81 % | 80 % |
| Heat output (low) | 15069 BTU/h | 12252 BTU/h |
| Heat output (high) | 33396 BTU/h | 38594 BTU/h |
| Firebox volume | 3.16 cu ft | 1.4 cu ft |
| Carbon monoxide | 0.23 g/min | 1.322 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 | 306-22 |
| Covered model numbers | Green Mountain 80 8680 | Answer NexGen Hybrid |
Frequently asked questions
Which burns cleaner, the Hearthstone Quality Home Heating Products Green Mountain 80 8680 or the Travis Industries Answer NexGen Hybrid (2)?
The Hearthstone Quality Home Heating Products Green Mountain 80 8680: 0.67 g/hr certified particulate emissions versus 1.4 g/hr for the Travis Industries Answer NexGen Hybrid (2).
Are the Hearthstone Quality Home Heating Products Green Mountain 80 8680 and Travis Industries Answer NexGen Hybrid (2) 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.