United States Stove Company US1520
United States Stove Company US1520 is a non-catalytic forced-air furnace from United States Stove Company with 70% HHV efficiency and a 15,997–53,042 BTU/h output range.
| Appliance type | forced-air-furnace |
|---|---|
| Combustion technology | Non-Catalytic Stove |
| Certified fuel | Cord Wood |
| Covered model numbers | US1520, HB1520, VG1520, WC1520, N35, C2235, SWF1035, SWF1035K, King KWF1520, Comfort Glow CGWF4000, DuraHeat DHWF4000 |
| Efficiency (HHV) | 70 % |
|---|
| Heat output (low) | 15997 BTU/h |
|---|---|
| Heat output (high) | 53042 BTU/h |
| Firebox volume | 3.95 cu ft |
| Carbon monoxide | 4.6 g/min |
|---|
| 25C tax credit eligible (≥75% HHV) | No |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | Yes |
| EPA certification number | 24FAF-22 |
What space does the United States Stove Company US1520 suit?
- The 3.95 cu ft firebox puts it in the large-home, overnight-burn class.
- Certified burning Cord Wood — the test fuel closest to real-world firewood.
Similar forced-air furnaces
Frequently asked questions
Is the United States Stove Company US1520 EPA certified?
Yes, the United States Stove Company US1520 is on the EPA's current list of certified wood heaters (certification number 24FAF-22) and meets the 2020 NSPS Step 2 emission limits.
Does the United States Stove Company US1520 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 US1520's certified efficiency is 70% 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.
Sources
- cfpub.epa.gov (retrieved 2026-07-23)