Stove Builder International Heat Commander II
Stove Builder International Heat Commander II is a non-catalytic forced-air furnace from Stove Builder International with 77% HHV efficiency and a 19,851–64,073 BTU/h output range.
| Appliance type | forced-air-furnace |
|---|---|
| Combustion technology | Non-Catalytic Stove |
| Certified fuel | Cord Wood |
| Covered model numbers | Heat Commander II, Caddy Advanced CR II, Caddy Advanced II, Caddy Advanced L, FC2500, SF2500 |
| Efficiency (HHV) | 77 % |
|---|
| Heat output (low) | 19851 BTU/h |
|---|---|
| Heat output (high) | 64073 BTU/h |
| Firebox volume | 3.6 cu ft |
| Carbon monoxide | 1.3 g/min |
|---|
| 25C tax credit eligible (≥75% HHV) | Yes |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | Yes |
| EPA certification number | 26FAF-25 |
What space does the Stove Builder International Heat Commander II suit?
- The 3.6 cu ft firebox puts it in the large-home, overnight-burn class.
- Certified burning Cord Wood — the test fuel closest to real-world firewood.
Similar forced-air furnaces
Frequently asked questions
Is the Stove Builder International Heat Commander II EPA certified?
Yes, the Stove Builder International Heat Commander II is on the EPA's current list of certified wood heaters (certification number 26FAF-25) and meets the 2020 NSPS Step 2 emission limits.
Does the Stove Builder International Heat Commander II 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 Stove Builder International Heat Commander II's certified efficiency is 77% 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)