Wolf Steel NZ3000H
Wolf Steel NZ3000H is a catalytic wood stove from Wolf Steel certified at 1.4 g/hr particulate emissions with 68% HHV efficiency and a 14,215–42,203 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 | NZ3000H, TZ3000H |
| Emission rate | 1.4 g/hr |
|---|---|
| Carbon monoxide | 0.43 g/min |
| Efficiency (HHV) | 68 % |
|---|
| Heat output (low) | 14215 BTU/h |
|---|---|
| Heat output (high) | 42203 BTU/h |
| Firebox volume | 2.3 cu ft |
| 25C tax credit eligible (≥75% HHV) | No |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | No |
| EPA certification number | 249-20 |
What space does the Wolf Steel NZ3000H suit?
- Its 42,203 BTU/h peak output covers roughly 1,200–1,700 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 2.3 cu ft firebox puts it in the mid-size home class.
- Rough fuel use: about 2.3 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
- Hearth and Home Technologies Vermont Castings Dauntless Flexburn Catalytic Model (1.2 g/hr)
- Travis Industries Rockport NexGen-Hybrid (0.73 g/hr)
- FPI/Regency Fireplace Products I2500 (1 g/hr)
- Hearthstone Quality Home Heating Products WFP100 (1.6 g/hr)
- Stove Builder International HE350 (1.6 g/hr)
- Pacific Energy Fireplace Products Limited Summit LE (1.8 g/hr)
Frequently asked questions
Is the Wolf Steel NZ3000H EPA certified?
The Wolf Steel NZ3000H holds EPA certification number 249-20 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 NZ3000H's emission rate?
The Wolf Steel NZ3000H is certified at 1.4 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 NZ3000H heat?
Roughly 1,200–1,700 sq ft, estimated from its 42,203 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 NZ3000H 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 NZ3000H's certified efficiency is 68% HHV, which did not meet 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)