Hearth and Home Technologies Quadra-Fire 21M-ACC-C vs Stove Builder International 2.1 Series (Destination 1.9
The Stove Builder International 2.1 Series (Destination 1.9 is the cleaner burner: 1.5 g/hr certified particulate emissions versus 1.7 g/hr. The Hearth and Home Technologies Quadra-Fire 21M-ACC-C is the more efficient unit: 76% versus 75% HHV — more heat from every cord. The Stove Builder International 2.1 Series (Destination 1.9 produces more peak heat (31,700 vs 29,322 BTU/h), suiting roughly 900–1,250 sq ft. The Hearth and Home Technologies Quadra-Fire 21M-ACC-C has the larger firebox (1.48 vs 1.03 cu ft), which generally means longer burns between reloads.
| Hearth and Home Technologies Quadra-Fire 21M-ACC-C | Stove Builder International 2.1 Series (Destination 1.9 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Non-Catalytic Stove | Non-Catalytic Stove |
| Certified fuel | Crib Wood | Cord Wood |
| Emission rate | 1.7 g/hr | 1.5 g/hr |
| Efficiency (HHV) | 76 % | 75 % |
| Heat output (low) | 13585 BTU/h | 8500 BTU/h |
| Heat output (high) | 29322 BTU/h | 31700 BTU/h |
| Firebox volume | 1.48 cu ft | 1.03 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 | 299-22 |
| Covered model numbers | Quadra-Fire 21M-ACC-C, Discovery-1-C, FF-WP-100 | 2.1 Series (Destination 1.9, Matrix 1900, CW2100, Green Mountain Insert 50, HEI90, Archway 1500, Blue Ridge 150-I) |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies Quadra-Fire 21M-ACC-C or the Stove Builder International 2.1 Series (Destination 1.9?
The Stove Builder International 2.1 Series (Destination 1.9: 1.5 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 Stove Builder International 2.1 Series (Destination 1.9 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.