Hearth and Home Technologies Quadra-Fire 21M-ACC-C vs New Buck Corporation (Buck Stove Corp.) Model 91
The New Buck Corporation (Buck Stove Corp.) Model 91 is the cleaner burner: 1.3 g/hr certified particulate emissions versus 1.7 g/hr. The New Buck Corporation (Buck Stove Corp.) Model 91 is the more efficient unit: 80% versus 76% HHV — more heat from every cord. The New Buck Corporation (Buck Stove Corp.) Model 91 produces more peak heat (43,190 vs 29,322 BTU/h), suiting roughly 1,250–1,750 sq ft. The New Buck Corporation (Buck Stove Corp.) Model 91 has the larger firebox (3.07 vs 1.48 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Hearth and Home Technologies Quadra-Fire 21M-ACC-C is a non-catalytic stove and the New Buck Corporation (Buck Stove Corp.) Model 91 a catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Hearth and Home Technologies Quadra-Fire 21M-ACC-C | New Buck Corporation (Buck Stove Corp.) Model 91 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Non-Catalytic Stove | Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.7 g/hr | 1.3 g/hr |
| Efficiency (HHV) | 76 % | 80 % |
| Heat output (low) | 13585 BTU/h | 14206 BTU/h |
| Heat output (high) | 29322 BTU/h | 43190 BTU/h |
| Firebox volume | 1.48 cu ft | 3.07 cu ft |
| Carbon monoxide | 1.5 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 | 250-20 | 239-19 |
| Covered model numbers | Quadra-Fire 21M-ACC-C, Discovery-1-C, FF-WP-100 | Model 91, Carolina 92 |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies Quadra-Fire 21M-ACC-C or the New Buck Corporation (Buck Stove Corp.) Model 91?
The New Buck Corporation (Buck Stove Corp.) Model 91: 1.3 g/hr certified particulate emissions versus 1.7 g/hr for the Hearth and Home Technologies Quadra-Fire 21M-ACC-C.
Are the Hearth and Home Technologies Quadra-Fire 21M-ACC-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.