Hargassner GmbH SMART HV23

Hargassner GmbH SMART HV23 is a non-catalytic hydronic heater from Hargassner GmbH with 73% HHV efficiency and a 10,166–78,335 BTU/h output range.

General
Appliance type hydronic-heater
Combustion technology Non-Catalytic Stove
Certified fuel Cord Wood
Covered model numbers SMART HV23
Efficiency
Efficiency (HHV) 73 %
Heat output
Heat output (low) 10166 BTU/h
Heat output (high) 78335 BTU/h
Firebox volume 3.53 cu ft
Emissions
Carbon monoxide 1.632 g/min
Certification
25C tax credit eligible (≥75% HHV) No
2020 NSPS compliant Yes
Currently in production Yes
EPA certification number 54HH-24

What space does the Hargassner GmbH SMART HV23 suit?

Similar hydronic heaters

Frequently asked questions

Is the Hargassner GmbH SMART HV23 EPA certified?

Yes, the Hargassner GmbH SMART HV23 is on the EPA's current list of certified wood heaters (certification number 54HH-24) and meets the 2020 NSPS Step 2 emission limits.

Does the Hargassner GmbH SMART HV23 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 Hargassner GmbH SMART HV23's certified efficiency is 73% 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.

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