United States Stove Company AF700 and CF700M is a non-catalytic forced-air furnace from United States Stove Company with 71% HHV efficiency and a 20,568–64,116 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.
General
Appliance type
forced-air-furnace
Combustion technology
Non-Catalytic Stove
Certified fuel
Cord Wood
Covered model numbers
AF700 and CF700M
Efficiency
Efficiency (HHV)
71 %
Heat output
Heat output (low)
20568 BTU/h
Heat output (high)
64116 BTU/h
Emissions
Carbon monoxide
7.93 g/min
Certification
25C tax credit eligible (≥75% HHV)
No
2020 NSPS compliant
No
Currently in production
No
What space does the United States Stove Company AF700 and CF700M suit?
Certified burning Cord Wood — the test fuel closest to real-world firewood.
Is the United States Stove Company AF700 and CF700M EPA certified?
The United States Stove Company AF700 and CF700M holds EPA certification number n/a 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.
Does the United States Stove Company AF700 and CF700M 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 United States Stove Company AF700 and CF700M's certified efficiency is 71% 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.
