Kuma Stove And Iron Works K-181 Series: Aspen LE-1 vs Pacific Energy Fireplace Products Limited True North TN20 Series B
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 73% HHV — more heat from every cord. The Pacific Energy Fireplace Products Limited True North TN20 Series B produces more peak heat (29,208 vs 29,153 BTU/h), suiting roughly 850–1,150 sq ft. The Pacific Energy Fireplace Products Limited True North TN20 Series B has the larger firebox (1.996 vs 1.821 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Kuma Stove And Iron Works K-181 Series: Aspen LE-1 is a catalytic stove and the Pacific Energy Fireplace Products Limited True North TN20 Series B a non-catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Kuma Stove And Iron Works K-181 Series: Aspen LE-1 | Pacific Energy Fireplace Products Limited True North TN20 Series B | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Non-Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1.1 g/hr | 1.6 g/hr |
| Efficiency (HHV) | 78 % | 73 % |
| Heat output (low) | 12764 BTU/h | 13931 BTU/h |
| Heat output (high) | 29153 BTU/h | 29208 BTU/h |
| Firebox volume | 1.821 cu ft | 1.996 cu ft |
| Carbon monoxide | 0.45 g/min | 0.77 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | No |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 346-23 | 80-17 |
| Covered model numbers | K-181 Series: Aspen LE-1, Tamarack LE-1, Aberdeen LE-1, and Alpine LE-1 | True North TN20 Series B, TN Insert Series B |
Frequently asked questions
Which burns cleaner, the Kuma Stove And Iron Works K-181 Series: Aspen LE-1 or the Pacific Energy Fireplace Products Limited True North TN20 Series B?
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 Pacific Energy Fireplace Products Limited True North TN20 Series B.
Are the Kuma Stove And Iron Works K-181 Series: Aspen LE-1 and Pacific Energy Fireplace Products Limited True North TN20 Series B 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.