Foyers Supreme Fusion 18 18FN
Foyers Supreme Fusion 18 18FN is a non-catalytic wood stove from Foyers Supreme certified at 1.9 g/hr particulate emissions with 67% HHV efficiency and a 10,958–22,421 BTU/h output range.
| Appliance type | wood-stove |
|---|---|
| Combustion technology | Non-Catalytic Stove |
| Certified fuel | Crib Wood |
| Covered model numbers | Fusion 18 18FN |
| Emission rate | 1.9 g/hr |
|---|---|
| Carbon monoxide | 1.8 g/min |
| Efficiency (HHV) | 67 % |
|---|
| Heat output (low) | 10958 BTU/h |
|---|---|
| Heat output (high) | 22421 BTU/h |
| Firebox volume | 1.86 cu ft |
| 25C tax credit eligible (≥75% HHV) | No |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | Yes |
| EPA certification number | 79-17 |
What space does the Foyers Supreme Fusion 18 18FN suit?
- Its 22,421 BTU/h peak output covers roughly 650–900 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 1.86 cu ft firebox puts it in the mid-size home class.
- Rough fuel use: about 1.4 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
- RSF / Industrial Chimney Company, Incorporated Focus 320 SBR (1.4 g/hr)
- STUV AMERICA STUV SIX 76-55 (1.86 g/hr)
- Innovative Hearth Products Ladera CAT WRT3920WS (1.8 g/hr)
- Rais A/S Viva 100 L (CA) USA (1.1 g/hr)
- J. A. Roby Polaris (1.4 g/hr)
- J. A. Roby Cook (1.9 g/hr)
Frequently asked questions
Is the Foyers Supreme Fusion 18 18FN EPA certified?
Yes, the Foyers Supreme Fusion 18 18FN is on the EPA's current list of certified wood heaters (certification number 79-17) and meets the 2020 NSPS Step 2 emission limits.
What is the Foyers Supreme Fusion 18 18FN's emission rate?
The Foyers Supreme Fusion 18 18FN is certified at 1.9 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 Foyers Supreme Fusion 18 18FN heat?
Roughly 650–900 sq ft, estimated from its 22,421 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 Foyers Supreme Fusion 18 18FN 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 Foyers Supreme Fusion 18 18FN's certified efficiency is 67% 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)