Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 vs Travis Industries Liberty NexGen-Hybrid
The Travis Industries Liberty NexGen-Hybrid is the cleaner burner: 0.9 g/hr certified particulate emissions versus 1.1 g/hr. The Travis Industries Liberty NexGen-Hybrid is the more efficient unit: 80% versus 78% HHV — more heat from every cord. The Travis Industries Liberty NexGen-Hybrid produces more peak heat (47,138 vs 30,612 BTU/h), suiting roughly 1,350–1,900 sq ft. The Travis Industries Liberty NexGen-Hybrid has the larger firebox (4.14 vs 2.56 cu ft), which generally means longer burns between reloads.
| Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 | Travis Industries Liberty NexGen-Hybrid | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.1 g/hr | 0.9 g/hr |
| Efficiency (HHV) | 78 % | 80 % |
| Heat output (low) | 11219 BTU/h | 11598 BTU/h |
| Heat output (high) | 30612 BTU/h | 47138 BTU/h |
| Firebox volume | 2.56 cu ft | 4.14 cu ft |
| Carbon monoxide | 0.49 g/min | 0.484 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 357-23 | 381-24 |
| Covered model numbers | K-251 Series: Ashwood LE-1, Wood Classic LE-1, Cambridge LE-1, Cascade LE-1 | Liberty NexGen-Hybrid |
Frequently asked questions
Which burns cleaner, the Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 or the Travis Industries Liberty NexGen-Hybrid?
The Travis Industries Liberty NexGen-Hybrid: 0.9 g/hr certified particulate emissions versus 1.1 g/hr for the Kuma Stove And Iron Works K-251 Series: Ashwood LE-1.
Are the Kuma Stove And Iron Works K-251 Series: Ashwood LE-1 and Travis Industries Liberty NexGen-Hybrid 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.