Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 vs Stove Builder International 2.3 Series (Archway 2300
The Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 is the cleaner burner: 1.1 g/hr certified particulate emissions versus 2.3 g/hr. The Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 is the more efficient unit: 78% versus 72% HHV — more heat from every cord. The Stove Builder International 2.3 Series (Archway 2300 produces more peak heat (44,500 vs 30,612 BTU/h), suiting roughly 1,250–1,800 sq ft. The Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 has the larger firebox (2.56 vs 1.95 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 is a catalytic stove and the Stove Builder International 2.3 Series (Archway 2300 a non-catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 | Stove Builder International 2.3 Series (Archway 2300 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Non-Catalytic Stove |
| Certified fuel | Crib Wood | Cord Wood |
| Emission rate | 1.1 g/hr | 2.3 g/hr |
| Efficiency (HHV) | 78 % | 72 % |
| Heat output (low) | 11219 BTU/h | 14200 BTU/h |
| Heat output (high) | 30612 BTU/h | 44500 BTU/h |
| Firebox volume | 2.56 cu ft | 1.95 cu ft |
| Carbon monoxide | 0.49 g/min | 1.1 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | No |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 357-23 | 101-17 |
| Covered model numbers | K-251 Series: Ashwood LE-1, Wood Classic LE-1, Cambridge LE-1, Cascade LE-1 | 2.3 Series (Archway 2300, FW2900, Gateway 2300, Green Mountain Insert 70, Escape 1800, Inspire 2000, Inspire 2000-I, Matrix, Escape 1800-I, Osburn 2000, Osburn 2000-I, Harmony 2.3, Solution 2.3, Solution 2.3-I, CW2900, Destination 2.3-I, Matrix-I, HES240, HEI240, Heritage, Deco Alto, Harmony 2.3-I, Blue Ridge 300P, Blue Ridge 300L, and Blue Ridge 300-I) |
Frequently asked questions
Which burns cleaner, the Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 or the Stove Builder International 2.3 Series (Archway 2300?
The Kuma Stove And Iron Works K-251 Series: Ashwood LE-1: 1.1 g/hr certified particulate emissions versus 2.3 g/hr for the Stove Builder International 2.3 Series (Archway 2300.
Are the Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 and Stove Builder International 2.3 Series (Archway 2300 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.