Hearth and Home Technologies Quadra-Fire 43M-ACC-C vs Kuma Stove And Iron Works K-181 Series: Aspen LE-1
The Kuma Stove And Iron Works K-181 Series: Aspen LE-1 is the cleaner burner: 1.1 g/hr certified particulate emissions versus 1.6 g/hr. The Kuma Stove And Iron Works K-181 Series: Aspen LE-1 is the more efficient unit: 78% versus 74% HHV — more heat from every cord. The Hearth and Home Technologies Quadra-Fire 43M-ACC-C produces more peak heat (36,757 vs 29,153 BTU/h), suiting roughly 1,050–1,450 sq ft. The Hearth and Home Technologies Quadra-Fire 43M-ACC-C has the larger firebox (2.26 vs 1.821 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Hearth and Home Technologies Quadra-Fire 43M-ACC-C is a non-catalytic stove and the Kuma Stove And Iron Works K-181 Series: Aspen LE-1 a catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Hearth and Home Technologies Quadra-Fire 43M-ACC-C | Kuma Stove And Iron Works K-181 Series: Aspen LE-1 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Non-Catalytic Stove | Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.6 g/hr | 1.1 g/hr |
| Efficiency (HHV) | 74 % | 78 % |
| Heat output (low) | 13239 BTU/h | 12764 BTU/h |
| Heat output (high) | 36757 BTU/h | 29153 BTU/h |
| Firebox volume | 2.26 cu ft | 1.821 cu ft |
| Carbon monoxide | 1.9 g/min | 0.45 g/min |
| 25C tax credit eligible (≥75% HHV) | No | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 247-20 | 346-23 |
| Covered model numbers | Quadra-Fire 43M-ACC-C, 43ST-ACC-C, Discovery-III-C, FF-WP-300 | K-181 Series: Aspen LE-1, Tamarack LE-1, Aberdeen LE-1, and Alpine LE-1 |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies Quadra-Fire 43M-ACC-C or the Kuma Stove And Iron Works K-181 Series: Aspen LE-1?
The Kuma Stove And Iron Works K-181 Series: Aspen LE-1: 1.1 g/hr certified particulate emissions versus 1.6 g/hr for the Hearth and Home Technologies Quadra-Fire 43M-ACC-C.
Are the Hearth and Home Technologies Quadra-Fire 43M-ACC-C and Kuma Stove And Iron Works K-181 Series: Aspen LE-1 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.