Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C vs New Buck Corporation (Buck Stove Corp.) Model 91
Both stoves carry the same certified emission rate: 1.3 g/hr. The New Buck Corporation (Buck Stove Corp.) Model 91 is the more efficient unit: 80% versus 78% HHV — more heat from every cord. The New Buck Corporation (Buck Stove Corp.) Model 91 produces more peak heat (43,190 vs 25,471 BTU/h), suiting roughly 1,250–1,750 sq ft. The Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C has the larger firebox (3.25 vs 3.07 cu ft), which generally means longer burns between reloads.
| Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C | New Buck Corporation (Buck Stove Corp.) Model 91 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.3 g/hr | 1.3 g/hr |
| Efficiency (HHV) | 78 % | 80 % |
| Heat output (low) | 11974 BTU/h | 14206 BTU/h |
| Heat output (high) | 25471 BTU/h | 43190 BTU/h |
| Firebox volume | 3.25 cu ft | 3.07 cu ft |
| Carbon monoxide | 1.46 g/min | 0.6 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 | 239-19 |
| Covered model numbers | Vermont Castings Defiant 1975-CAT-C | Model 91, Carolina 92 |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C or the New Buck Corporation (Buck Stove Corp.) Model 91?
They are tied: both are certified at 1.3 g/hr of particulates.
Are the Hearth and Home Technologies Vermont Castings Defiant 1975-CAT-C and New Buck Corporation (Buck Stove Corp.) Model 91 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.