Woodstock Soapstone Company Absolute Steel Hybrid 211 vs Woodstock Soapstone Company Progress Hybrid 209b
The Woodstock Soapstone Company Progress Hybrid 209b is the cleaner burner: 0.46 g/hr certified particulate emissions versus 0.5 g/hr. The Woodstock Soapstone Company Progress Hybrid 209b 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 35,222 BTU/h), suiting roughly 1,300–1,800 sq ft. The Woodstock Soapstone Company Progress Hybrid 209b has the larger firebox (2.8 vs 2.43 cu ft), which generally means longer burns between reloads.
| Woodstock Soapstone Company Absolute Steel Hybrid 211 | Woodstock Soapstone Company Progress Hybrid 209b | |
|---|---|---|
| Appliance type | wood-stove | wood-stove |
| Combustion technology | Hybrid | Hybrid |
| Certified fuel | Crib Wood | Crib Wood |
| Emission rate | 0.5 g/hr | 0.46 g/hr |
| Efficiency (HHV) | 77 % | 80 % |
| Heat output (low) | 14426 BTU/h | 15257 BTU/h |
| Heat output (high) | 45317 BTU/h | 35222 BTU/h |
| Firebox volume | 2.43 cu ft | 2.8 cu ft |
| Carbon monoxide | 0.04 g/min | 0.07 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 33-16 | 406-25 |
| Covered model numbers | Absolute Steel Hybrid 211 | Progress Hybrid 209b |
Frequently asked questions
Which burns cleaner, the Woodstock Soapstone Company Absolute Steel Hybrid 211 or the Woodstock Soapstone Company Progress Hybrid 209b?
The Woodstock Soapstone Company Progress Hybrid 209b: 0.46 g/hr certified particulate emissions versus 0.5 g/hr for the Woodstock Soapstone Company Absolute Steel Hybrid 211.
Are the Woodstock Soapstone Company Absolute Steel Hybrid 211 and Woodstock Soapstone Company Progress Hybrid 209b 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.