Hussong Manufacturing Company Kozy Heat Z42
Hussong Manufacturing Company Kozy Heat Z42 is a non-catalytic wood stove from Hussong Manufacturing Company certified at 1.2 g/hr particulate emissions with 66% HHV efficiency and a 12,850–36,231 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 | Non-Catalytic Stove |
| Certified fuel | Cord Wood |
| Covered model numbers | Kozy Heat Z42, Kozy Heat Albany |
| Emission rate | 1.2 g/hr |
|---|---|
| Carbon monoxide | 1.4 g/min |
| Efficiency (HHV) | 66 % |
|---|
| Heat output (low) | 12850 BTU/h |
|---|---|
| Heat output (high) | 36231 BTU/h |
| Firebox volume | 1.92 cu ft |
| 25C tax credit eligible (≥75% HHV) | No |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | No |
| EPA certification number | 214-19 |
What space does the Hussong Manufacturing Company Kozy Heat Z42 suit?
- Its 36,231 BTU/h peak output covers roughly 1,050–1,450 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 1.92 cu ft firebox puts it in the mid-size home class.
- Rough fuel use: about 2 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
- Jotul North America (Jotul U.S.A., Inc.) C550 V2 (1.1 g/hr)
- FPI/Regency Fireplace Products F3500 (0.9 g/hr)
- Blaze King Industries 30.2 Series: Sirocco 30.2 (SC30.2) (0.81 g/hr)
- FPI/Regency Fireplace Products F5200 (2) (0.84 g/hr)
- 509 Fabrications Chinook VCV 2.1.5 (1.3 g/hr)
- Morso Jernstoberi A/S 7110 B (1.1 g/hr)
Frequently asked questions
Is the Hussong Manufacturing Company Kozy Heat Z42 EPA certified?
The Hussong Manufacturing Company Kozy Heat Z42 holds EPA certification number 214-19 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 Hussong Manufacturing Company Kozy Heat Z42's emission rate?
The Hussong Manufacturing Company Kozy Heat Z42 is certified at 1.2 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 Hussong Manufacturing Company Kozy Heat Z42 heat?
Roughly 1,050–1,450 sq ft, estimated from its 36,231 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 Hussong Manufacturing Company Kozy Heat Z42 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 Hussong Manufacturing Company Kozy Heat Z42's certified efficiency is 66% 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)