Woodstock Soapstone Company 210a Ideal Steel Hybrid
Woodstock Soapstone Company 210a Ideal Steel Hybrid is a hybrid (catalytic + secondary burn) wood stove from Woodstock Soapstone Company certified at 0.89 g/hr particulate emissions with 77% HHV efficiency and a 9,324–43,263 BTU/h output range (previously certified, no longer in production).
Previously certified (out of production). This model appears in the EPA Certified Wood Heater Database but is no longer on the current certified list, which usually means it is no longer manufactured. The specifications below are its certified figures, kept for reference and for owners of installed units. Browse currently certified heaters for models sold new today.
| Appliance type | wood-stove |
|---|---|
| Combustion technology | Hybrid |
| Certified fuel | Cord Wood |
| Covered model numbers | 210a Ideal Steel Hybrid |
| Emission rate | 0.89 g/hr |
|---|---|
| Carbon monoxide | 0.27 g/min |
| Efficiency (HHV) | 77 % |
|---|
| Heat output (low) | 9324 BTU/h |
|---|---|
| Heat output (high) | 43263 BTU/h |
| Firebox volume | 3.22 cu ft |
| 25C tax credit eligible (≥75% HHV) | Yes |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | No |
| EPA certification number | 278-20 |
What space does the Woodstock Soapstone Company 210a Ideal Steel Hybrid suit?
- Its 43,263 BTU/h peak output covers roughly 1,250–1,750 sq ft at the 25–35 BTU/h-per-square-foot rule of thumb — see the sizing calculator to adjust for your insulation and climate.
- The 3.22 cu ft firebox puts it in the large-home, overnight-burn class.
- Rough fuel use: about 1.9 cords per season at the midpoint of its output range (8 burn-hours/day, 150-day season, 22 MMBtu/cord — see methodology).
- Certified burning Cord Wood — the test fuel closest to real-world firewood.
Similar wood stoves
- New Buck Corporation (Buck Stove Corp.) Model 91 (1.3 g/hr)
- Morso Jernstoberi A/S 5660 B (1.2 g/hr)
- Hearthstone Quality Home Heating Products WFP100 (1.6 g/hr)
- Stove Builder International HE350 (1.6 g/hr)
- FPI/Regency Fireplace Products I2500 (1 g/hr)
- Travis Industries Rockport NexGen-Hybrid (0.73 g/hr)
Frequently asked questions
Is the Woodstock Soapstone Company 210a Ideal Steel Hybrid EPA certified?
The Woodstock Soapstone Company 210a Ideal Steel Hybrid holds EPA certification number 278-20 but is no longer on the current certified list — it is previously certified, which usually means the model is out of production. Already-installed units are unaffected by that status in most jurisdictions.
What is the Woodstock Soapstone Company 210a Ideal Steel Hybrid's emission rate?
The Woodstock Soapstone Company 210a Ideal Steel Hybrid is certified at 0.89 grams of particulates per hour (tested with cord wood). Real-world emissions depend heavily on fuel moisture and operation — the lab figure assumes seasoned fuel and correct air settings.
How many square feet can the Woodstock Soapstone Company 210a Ideal Steel Hybrid heat?
Roughly 1,250–1,750 sq ft, estimated from its 43,263 BTU/h peak output at 25–35 BTU/h per square foot. Insulation, climate, ceiling height, and floor plan move this figure substantially in both directions.
Does the Woodstock Soapstone Company 210a Ideal Steel Hybrid qualify for a federal tax credit?
No — the federal 25C credit for biomass stoves was terminated for property placed in service after December 31, 2025. The Woodstock Soapstone Company 210a Ideal Steel Hybrid's certified efficiency is 77% HHV, which met the credit's ≥75% HHV threshold while it existed. State and local incentive programs may still apply — check your state energy office and air district.
Sources
- cfpub.epa.gov (retrieved 2026-07-23)