Wolf Steel Napoleon S30
Wolf Steel Napoleon S30 is a catalytic wood stove from Wolf Steel certified at 2.3 g/hr particulate emissions with 75% HHV efficiency and a 12,151–37,829 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 | Catalytic Stove |
| Certified fuel | Cord Wood |
| Covered model numbers | Napoleon S30, Timberwolf T30 |
| Emission rate | 2.3 g/hr |
|---|---|
| Carbon monoxide | 0.65 g/min |
| Efficiency (HHV) | 75 % |
|---|
| Heat output (low) | 12151 BTU/h |
|---|---|
| Heat output (high) | 37829 BTU/h |
| Firebox volume | 3.2 cu ft |
| 25C tax credit eligible (≥75% HHV) | Yes |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | No |
| EPA certification number | 255-20 |
What space does the Wolf Steel Napoleon S30 suit?
- Its 37,829 BTU/h peak output covers roughly 1,100–1,500 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 3.2 cu ft firebox puts it in the large-home, overnight-burn class.
- Rough fuel use: about 1.8 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
- Innovative Hearth Products S210AGL (1.5 g/hr)
- Travis Industries 42 Apex NexGen-Hybrid (1.2 g/hr)
- MF Fire NOVA 2 (1.9 g/hr)
- Woodstock Soapstone Company 210 Ideal Steel Hybrid (2.1 g/hr)
- Morso Jernstoberi A/S 6140 B (0.67 g/hr)
- Pacific Energy Fireplace Products Limited Super LE (1.8 g/hr)
Frequently asked questions
Is the Wolf Steel Napoleon S30 EPA certified?
The Wolf Steel Napoleon S30 holds EPA certification number 255-20 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 Wolf Steel Napoleon S30's emission rate?
The Wolf Steel Napoleon S30 is certified at 2.3 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 Wolf Steel Napoleon S30 heat?
Roughly 1,100–1,500 sq ft, estimated from its 37,829 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 Wolf Steel Napoleon S30 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 Wolf Steel Napoleon S30's certified efficiency is 75% 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)