620-9 and 620-10
Previously certified
EPA lists 620-9 and 620-10 under AC Component Specialists as a previously certified forced-air furnace.
The listed emission rate is 0.2 pounds per million BTU.
The listed HHV efficiency is 65 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Previously certified |
| Type | Forced Air Furnace |
| Subtype | Non-Catalytic Stove |
| Emission | 0.2 pounds per million BTU |
| HHV efficiency | 65 percent |
| Heat output | 37,722–112,434 BTU/hr |
| Heat output maximum | Not listed |
| Firebox | Not applicable |
| CO | 1.1 g/min |
| Certified fuel | Wood Pellets |
| Test method | Not listed |
| 2020 NSPS | No |
| Thermal storage | No |
Retail names in the model line
These are the names split from EPA's model cell. They are aliases for this line, not separate listings.
- 620-9 and 620-10
Other model lines from this manufacturer
No other model line in this snapshot uses this manufacturer string.
Nearest model lines by EPA figures
Nearest means the smallest absolute difference on that EPA figure, among other Forced Air Furnace model lines that list it. Ties are ordered by model name.
Emission
- Fire Chief FC1000 and Shelter SF1000 — 0.19 pounds per million BTU
- Fire Chief FC1700, FC1900 and Shelter Furnace SF3100, SF4200 — 0.26 pounds per million BTU
- SF1000E, FC1000E, X1020, L1020 — 0.14 pounds per million BTU
- AirBilo Plus — 0.13 pounds per million BTU
- Fire Chief FC1000E and Shelter SF1000E — 0.12 pounds per million BTU
HHV efficiency
- Fire Chief FC1700, FC1900 and Shelter Furnace SF3100, SF4200 — 64 percent
- 1400E, 1440E, AF1440E, CF1440E, BK1440E, NM1440E, GE1440E, CH1440E, VG1440E, HC1440E, HB1440E, VG1501E, 1551E, AF1500E — 63 percent
- Fire Chief FC1500 and Shelter Furnace SF2600 — 63 percent
- 1660E, AF1660E, CF1660E, SF1660E, BK1660E, NM1660E, GE1660E, CH1660E, VG1660E, HC1660E, and HB1660E — 62 percent
- Caddy Alterna II — 69 percent
Heat output
- AutoPellet Air 28kW — 45,600–98,472 BTU/hr
- Autopellet Air — 29,509–92,178 BTU/hr
- AirBilo Plus — 24,748–88,496 BTU/hr
- 1660EFE, AF1660EFE, CF1660EFE, NM1660EFE, VG1660EFE, HB1660EFE — 27,875–73,849 BTU/hr
- Fire Chief FC1500 and Shelter Furnace SF2600 — 23,905–74,178 BTU/hr
AC Component Specialists hub · EPA Certified Wood Heater Database