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.
General
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
Efficiency (HHV)
77 %
Heat output
Heat output (low)
19851 BTU/h
Heat output (high)
64073 BTU/h
Firebox volume
3.6 cu ft
Emissions
Carbon monoxide
1.3 g/min
Certification
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.
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.
