RSF / Industrial Chimney Company, Incorporated
EPA lists 3 currently certified model lines and 9 previously certified model lines for RSF / Industrial Chimney Company, Incorporated.
The lowest listed emission rate among those currently certified lines is 0.7 grams per hour, on OPEL PLUS Series: Opel+ 2C, Opel+ 3C, Opel+ 4C, Opel+ Keystone, Opel+ K….
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
Models are grouped under the manufacturer name EPA published.
Evidence used for this hub: No retail-brand mapping is recorded. The hub title is the EPA manufacturer string.
EPA manufacturer string: RSF / Industrial Chimney Company, Incorporated.
Currently certified
| Model line | EPA manufacturer | Status | Emission (g/hr) | HHV efficiency | Heat output | Firebox | Fuel |
|---|---|---|---|---|---|---|---|
| OPEL PLUS Series: Opel+ 2C, Opel+ 3C, Opel+ 4C, Opel+ Keystone, Opel+ Keystone-AK | RSF / Industrial Chimney Company, Incorporated | Currently certified | 0.7 | 70% | 11,723–27,034 BTU/hr | 2.32 cu ft | Crib Wood |
| Focus 320 SBR, Onyx SBR | RSF / Industrial Chimney Company, Incorporated | Currently certified | 1.4 | 66% | 21,131–22,563 BTU/hr | 2.1 cu ft | Crib Wood |
| RSF 3600B Series: Pearl 3600B, Perle 3600B, Focus 3600B, Focus 3600Bi | RSF / Industrial Chimney Company, Incorporated | Currently certified | 1.7 | 70% | 11,757–25,406 BTU/hr | 1.6 cu ft | Crib Wood |
Previously certified
| Model line | EPA manufacturer | Status | Emission (g/hr) | HHV efficiency | Heat output | Firebox | Fuel |
|---|---|---|---|---|---|---|---|
| Delta Fusion | RSF / Industrial Chimney Company, Incorporated | Previously certified | 1.3 | 60% | 33,721–34,057 BTU/hr | 4.04 cu ft | Crib Wood |
| RSF 3600 Series: Pearl 3600, Perle 3600, Focus 3600, Focus 3600i, Focus 3600s | RSF / Industrial Chimney Company, Incorporated | Previously certified | 1.5 | 74% | 13,138–44,135 BTU/hr | 1.57 cu ft | Cord Wood |
| RSF Opel2C, Opel3C, Opel4C | RSF / Industrial Chimney Company, Incorporated | Previously certified | 2.5 | Not listed | 13,400–30,100 BTU/hr | Not listed | Crib Wood |
| RSF Focus 320+; Onyx2+ | RSF / Industrial Chimney Company, Incorporated | Previously certified | 3.1 | 64% | 11,200–28,400 BTU/hr | Not listed | Not listed |
| Opel 2000C, OPEL AP | RSF / Industrial Chimney Company, Incorporated | Previously certified | 3.7 | Not listed | 10,600–49,700 BTU/hr | Not listed | Not listed |
| TOPAZ/CHAMELEON (Without Fan), FOCUS 250, PEARL/PERLE | RSF / Industrial Chimney Company, Incorporated | Previously certified | 4 | Not listed | 11,100–25,700 BTU/hr | Not listed | Crib Wood |
| ONYX AP | RSF / Industrial Chimney Company, Incorporated | Previously certified | 4.5 | Not listed | 11,800–35,600 BTU/hr | Not listed | Not listed |
| ONYX, Focus 320 | RSF / Industrial Chimney Company, Incorporated | Previously certified | 4.5 | Not listed | 11,800–35,600 BTU/hr | Not listed | Crib Wood |
| TOPAZ/CHAEMELON (With Fan), FOCUS 250, PEARL/PERLE | RSF / Industrial Chimney Company, Incorporated | Previously certified | 5.5 | Not listed | 9,500–25,800 BTU/hr | Not listed | Not listed |