Kuma Stove And Iron Works K-181 Series: Aspen LE-1 vs Travis Industries Rockport NexGen-Hybrid
The Travis Industries Rockport NexGen-Hybrid is the cleaner burner: 0.73 g/hr certified particulate emissions versus 1.1 g/hr. The Travis Industries Rockport NexGen-Hybrid is the more efficient unit: 80% versus 78% HHV — more heat from every cord. The Travis Industries Rockport NexGen-Hybrid produces more peak heat (42,722 vs 29,153 BTU/h), suiting roughly 1,200–1,700 sq ft. The Travis Industries Rockport NexGen-Hybrid has the larger firebox (2.04 vs 1.821 cu ft), which generally means longer burns between reloads.
| Kuma Stove And Iron Works K-181 Series: Aspen LE-1 | Travis Industries Rockport 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 | 0.73 g/hr |
| Efficiency (HHV) | 78 % | 80 % |
| Heat output (low) | 12764 BTU/h | 12594 BTU/h |
| Heat output (high) | 29153 BTU/h | 42722 BTU/h |
| Firebox volume | 1.821 cu ft | 2.04 cu ft |
| Carbon monoxide | 0.45 g/min | 0.493 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 346-23 | 362-24 |
| Covered model numbers | K-181 Series: Aspen LE-1, Tamarack LE-1, Aberdeen LE-1, and Alpine LE-1 | Rockport NexGen-Hybrid |
Frequently asked questions
Which burns cleaner, the Kuma Stove And Iron Works K-181 Series: Aspen LE-1 or the Travis Industries Rockport NexGen-Hybrid?
The Travis Industries Rockport NexGen-Hybrid: 0.73 g/hr certified particulate emissions versus 1.1 g/hr for the Kuma Stove And Iron Works K-181 Series: Aspen LE-1.
Are the Kuma Stove And Iron Works K-181 Series: Aspen LE-1 and Travis Industries Rockport 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.