Blaze King Industries Princess PI29 Insert (2) vs Woodstock Soapstone Company Absolute Steel Hybrid 211
The Woodstock Soapstone Company Absolute Steel Hybrid 211 is the cleaner burner: 0.5 g/hr certified particulate emissions versus 1 g/hr. The Blaze King Industries Princess PI29 Insert (2) is the more efficient unit: 80% versus 77% HHV — more heat from every cord. The Woodstock Soapstone Company Absolute Steel Hybrid 211 produces more peak heat (45,317 vs 30,194 BTU/h), suiting roughly 1,300–1,800 sq ft. The Blaze King Industries Princess PI29 Insert (2) has the larger firebox (2.63 vs 2.43 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 Woodstock Soapstone Company Absolute Steel Hybrid 211 a hybrid — see the catalytic vs non-catalytic guide for what that means day to day.
| Blaze King Industries Princess PI29 Insert (2) | Woodstock Soapstone Company Absolute Steel Hybrid 211 | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Catalytic Stove | Hybrid |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 1 g/hr | 0.5 g/hr |
| Efficiency (HHV) | 80 % | 77 % |
| Heat output (low) | 9023 BTU/h | 14426 BTU/h |
| Heat output (high) | 30194 BTU/h | 45317 BTU/h |
| Firebox volume | 2.63 cu ft | 2.43 cu ft |
| Carbon monoxide | 0.704 g/min | 0.04 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 123-18 | 33-16 |
| Covered model numbers | Princess PI29 Insert | Absolute Steel Hybrid 211 |
Frequently asked questions
Which burns cleaner, the Blaze King Industries Princess PI29 Insert (2) or the Woodstock Soapstone Company Absolute Steel Hybrid 211?
The Woodstock Soapstone Company Absolute Steel Hybrid 211: 0.5 g/hr certified particulate emissions versus 1 g/hr for the Blaze King Industries Princess PI29 Insert (2).
Are the Blaze King Industries Princess PI29 Insert (2) and Woodstock Soapstone Company Absolute Steel Hybrid 211 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.