Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT vs New Buck Corporation (Buck Stove Corp.) 21NC
The Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT is the cleaner burner: 0.3 g/hr certified particulate emissions versus 1.7 g/hr. The Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT is the more efficient unit: 77% versus 70% HHV — more heat from every cord. The New Buck Corporation (Buck Stove Corp.) 21NC produces more peak heat (28,901 vs 15,906 BTU/h), suiting roughly 850–1,150 sq ft. The New Buck Corporation (Buck Stove Corp.) 21NC has the larger firebox (1.4 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 New Buck Corporation (Buck Stove Corp.) 21NC a non-catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT | New Buck Corporation (Buck Stove Corp.) 21NC | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Non-Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 0.3 g/hr | 1.7 g/hr |
| Efficiency (HHV) | 77 % | 70 % |
| Heat output (low) | 10665 BTU/h | 11079 BTU/h |
| Heat output (high) | 15906 BTU/h | 28901 BTU/h |
| Firebox volume | 1.31 cu ft | 1.4 cu ft |
| Carbon monoxide | 0.82 g/min | 6.1 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | No |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 115-18 | 66-16 |
| Covered model numbers | Vermont Castings Intrepid FlexBurn 2115-CAT | 21NC |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT or the New Buck Corporation (Buck Stove Corp.) 21NC?
The Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT: 0.3 g/hr certified particulate emissions versus 1.7 g/hr for the New Buck Corporation (Buck Stove Corp.) 21NC.
Are the Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT and New Buck Corporation (Buck Stove Corp.) 21NC 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.