Blaze King Industries Princess PI29 Insert (2) vs New Buck Corporation (Buck Stove Corp.) 21NC
The Blaze King Industries Princess PI29 Insert (2) is the cleaner burner: 1 g/hr certified particulate emissions versus 1.7 g/hr. The Blaze King Industries Princess PI29 Insert (2) is the more efficient unit: 80% versus 70% HHV — more heat from every cord. The Blaze King Industries Princess PI29 Insert (2) produces more peak heat (30,194 vs 28,901 BTU/h), suiting roughly 850–1,200 sq ft. The Blaze King Industries Princess PI29 Insert (2) has the larger firebox (2.63 vs 1.4 cu ft), which generally means longer burns between reloads. Combustion technology differs: the Blaze King Industries Princess PI29 Insert (2) is a catalytic stove and the New Buck Corporation (Buck Stove Corp.) 21NC a non-catalytic stove — see the catalytic vs non-catalytic guide for what that means day to day.
| Blaze King Industries Princess PI29 Insert (2) | New Buck Corporation (Buck Stove Corp.) 21NC | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Non-Catalytic Stove |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1 g/hr | 1.7 g/hr |
| Efficiency (HHV) | 80 % | 70 % |
| Heat output (low) | 9023 BTU/h | 11079 BTU/h |
| Heat output (high) | 30194 BTU/h | 28901 BTU/h |
| Firebox volume | 2.63 cu ft | 1.4 cu ft |
| Carbon monoxide | 0.704 g/min | 6.1 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | No |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 123-18 | 66-16 |
| Covered model numbers | Princess PI29 Insert | 21NC |
Frequently asked questions
Which burns cleaner, the Blaze King Industries Princess PI29 Insert (2) or the New Buck Corporation (Buck Stove Corp.) 21NC?
The Blaze King Industries Princess PI29 Insert (2): 1 g/hr certified particulate emissions versus 1.7 g/hr for the New Buck Corporation (Buck Stove Corp.) 21NC.
Are the Blaze King Industries Princess PI29 Insert (2) and New Buck Corporation (Buck Stove Corp.) 21NC 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.