Hearth and Home Technologies Quadra-Fire 21M-ACC-C vs Stove Builder International Bistro Series (Bistro
The Hearth and Home Technologies Quadra-Fire 21M-ACC-C is the cleaner burner: 1.7 g/hr certified particulate emissions versus 2 g/hr. They tie on efficiency at 76% HHV. The Stove Builder International Bistro Series (Bistro produces more peak heat (50,200 vs 29,322 BTU/h), suiting roughly 1,450–2,000 sq ft. The Stove Builder International Bistro Series (Bistro has the larger firebox (2.26 vs 1.48 cu ft), which generally means longer burns between reloads.
| Hearth and Home Technologies Quadra-Fire 21M-ACC-C | Stove Builder International Bistro Series (Bistro | |
|---|---|---|
| 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 | 2 g/hr |
| Efficiency (HHV) | 76 % | 76 % |
| Heat output (low) | 13585 BTU/h | 14300 BTU/h |
| Heat output (high) | 29322 BTU/h | 50200 BTU/h |
| Firebox volume | 1.48 cu ft | 2.26 cu ft |
| Carbon monoxide | 1.5 g/min | 1 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 | 337-22 |
| Covered model numbers | Quadra-Fire 21M-ACC-C, Discovery-1-C, FF-WP-100 | Bistro Series (Bistro, Gusto, Pyra, 600, HEC240, IW600) |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies Quadra-Fire 21M-ACC-C or the Stove Builder International Bistro Series (Bistro?
The Hearth and Home Technologies Quadra-Fire 21M-ACC-C: 1.7 g/hr certified particulate emissions versus 2 g/hr for the Stove Builder International Bistro Series (Bistro.
Are the Hearth and Home Technologies Quadra-Fire 21M-ACC-C and Stove Builder International Bistro Series (Bistro 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.