Blaze King Industries King KE40
Blaze King Industries King KE40 is a catalytic wood stove from Blaze King Industries certified at 1.1 g/hr particulate emissions with 81% HHV efficiency and a 11,690–34,985 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 | Crib Wood |
| Covered model numbers | King KE40 |
| Emission rate | 1.1 g/hr |
|---|---|
| Carbon monoxide | 0.6 g/min |
| Efficiency (HHV) | 81 % |
|---|
| Heat output (low) | 11690 BTU/h |
|---|---|
| Heat output (high) | 34985 BTU/h |
| Firebox volume | 4.35 cu ft |
| 25C tax credit eligible (≥75% HHV) | Yes |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | No |
| EPA certification number | 220-19a |
What space does the Blaze King Industries King KE40 suit?
- Its 34,985 BTU/h peak output covers roughly 1,000–1,400 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 4.35 cu ft firebox puts it in the large-home, overnight-burn class.
- Rough fuel use: about 1.6 cords per season at the midpoint of its output range (8 burn-hours/day, 150-day season, 22 MMBtu/cord — see methodology).
- Certified burning Crib Wood .
Similar wood stoves
- Innovative Hearth Products T2100GLS (1.5 g/hr)
- Woodstock Soapstone Company Progress Hybrid 209b (0.46 g/hr)
- FPI/Regency Fireplace Products I2450M (1.4 g/hr)
- Blaze King Industries Princess PE32 (2) (0.55 g/hr)
- Jotul North America (Jotul U.S.A., Inc.) F445 (0.49 g/hr)
- United States Stove Company US2000 Model Line: AW2020 (1.6 g/hr)
Frequently asked questions
Is the Blaze King Industries King KE40 EPA certified?
The Blaze King Industries King KE40 holds EPA certification number 220-19a 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 Blaze King Industries King KE40's emission rate?
The Blaze King Industries King KE40 is certified at 1.1 grams of particulates per hour (tested with crib 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 Blaze King Industries King KE40 heat?
Roughly 1,000–1,400 sq ft, estimated from its 34,985 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 Blaze King Industries King KE40 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 Blaze King Industries King KE40's certified efficiency is 81% 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)