Hargassner GmbH ECO-HK 120 Multifuel is a non-catalytic hydronic heater from Hargassner GmbH certified at 2.01 g/hr particulate emissions with 88% HHV efficiency and a 53,054–416,833 BTU/h output range.
General
Appliance type
hydronic-heater
Combustion technology
Non-Catalytic Stove
Certified fuel
Wood Pellets
Covered model numbers
ECO-HK 120 Multifuel
Emissions
Emission rate
2.01 g/hr
Carbon monoxide
0.031 g/min
Efficiency
Efficiency (HHV)
88 %
Heat output
Heat output (low)
53054 BTU/h
Heat output (high)
416833 BTU/h
Certification
25C tax credit eligible (≥75% HHV)
Yes
2020 NSPS compliant
Yes
Currently in production
Yes
EPA certification number
27HH-20
What space does the Hargassner GmbH ECO-HK 120 Multifuel suit?
Is the Hargassner GmbH ECO-HK 120 Multifuel EPA certified?
Yes, the Hargassner GmbH ECO-HK 120 Multifuel is on the EPA's current list of certified wood heaters (certification number 27HH-20) and meets the 2020 NSPS Step 2 emission limits.
What is the Hargassner GmbH ECO-HK 120 Multifuel's emission rate?
The Hargassner GmbH ECO-HK 120 Multifuel is certified at 2.01 grams of particulates per hour (tested with wood pellets). Real-world emissions depend heavily on fuel moisture and operation — the lab figure assumes seasoned fuel and correct air settings.
Does the Hargassner GmbH ECO-HK 120 Multifuel 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 ECO-HK 120 Multifuel's certified efficiency is 88% 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.
