Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT vs Hearthstone Quality Home Heating Products Green Mountain 80 8680
The Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT is the cleaner burner: 0.3 g/hr certified particulate emissions versus 0.67 g/hr. The Hearthstone Quality Home Heating Products Green Mountain 80 8680 is the more efficient unit: 81% versus 77% HHV — more heat from every cord. The Hearthstone Quality Home Heating Products Green Mountain 80 8680 produces more peak heat (33,396 vs 15,906 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 1.31 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT is a catalytic stove and the Hearthstone Quality Home Heating Products Green Mountain 80 8680 a hybrid — see the catalytic vs non-catalytic guide for what that means day to day.
| Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT | Hearthstone Quality Home Heating Products Green Mountain 80 8680 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Hybrid |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 0.3 g/hr | 0.67 g/hr |
| Efficiency (HHV) | 77 % | 81 % |
| Heat output (low) | 10665 BTU/h | 15069 BTU/h |
| Heat output (high) | 15906 BTU/h | 33396 BTU/h |
| Firebox volume | 1.31 cu ft | 3.16 cu ft |
| Carbon monoxide | 0.82 g/min | 0.23 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 115-18 | 162-18 |
| Covered model numbers | Vermont Castings Intrepid FlexBurn 2115-CAT | Green Mountain 80 8680 |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT or the Hearthstone Quality Home Heating Products Green Mountain 80 8680?
The Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT: 0.3 g/hr certified particulate emissions versus 0.67 g/hr for the Hearthstone Quality Home Heating Products Green Mountain 80 8680.
Are the Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT and Hearthstone Quality Home Heating Products Green Mountain 80 8680 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.