Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C vs Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT
The Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT is the cleaner burner: 0.3 g/hr certified particulate emissions versus 1.3 g/hr. The Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C is the more efficient unit: 78% versus 77% HHV — more heat from every cord. The Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C produces more peak heat (25,471 vs 15,906 BTU/h), suiting roughly 750–1,000 sq ft. The Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C has the larger firebox (3.25 vs 1.31 cu ft), which generally means longer burns between reloads.
| Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C | Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.3 g/hr | 0.3 g/hr |
| Efficiency (HHV) | 78 % | 77 % |
| Heat output (low) | 11974 BTU/h | 10665 BTU/h |
| Heat output (high) | 25471 BTU/h | 15906 BTU/h |
| Firebox volume | 3.25 cu ft | 1.31 cu ft |
| Carbon monoxide | 1.46 g/min | 0.82 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 212-19 | 115-18 |
| Covered model numbers | Vermont Castings Defiant 1975-CAT-C | Vermont Castings Intrepid FlexBurn 2115-CAT |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C or the Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT?
The Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT: 0.3 g/hr certified particulate emissions versus 1.3 g/hr for the Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C.
Are the Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C and Hearth and Home Technologies Vermont Castings Intrepid FlexBurn 2115-CAT 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.