Alternate Heating Systems SE110 is a non-catalytic hydronic heater from Alternate Heating Systems with 67% HHV efficiency and a 16,286–121,291 BTU/h output range.
General
Appliance type
hydronic-heater
Combustion technology
Non-Catalytic Stove
Certified fuel
Cord Wood
Covered model numbers
SE110
Efficiency
Efficiency (HHV)
67 %
Heat output
Heat output (low)
16286 BTU/h
Heat output (high)
121291 BTU/h
Firebox volume
5.42 cu ft
Emissions
Carbon monoxide
2 g/min
Certification
25C tax credit eligible (≥75% HHV)
No
2020 NSPS compliant
Yes
Currently in production
Yes
EPA certification number
59HH-26
What space does the Alternate Heating Systems SE110 suit?
The 5.42 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 Alternate Heating Systems SE110 EPA certified?
Yes, the Alternate Heating Systems SE110 is on the EPA's current list of certified wood heaters (certification number 59HH-26) and meets the 2020 NSPS Step 2 emission limits.
Does the Alternate Heating Systems SE110 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 Alternate Heating Systems SE110'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.
