O-2/90
Previously certified
EPA lists O-2/90 under Country Flame Technologies, Inc. as a previously certified catalytic wood stove.
The listed emission rate is 3 grams per hour.
EPA does not list an HHV efficiency for this model line.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Previously certified |
| Type | Wood Stove |
| Subtype | Catalytic Stove |
| Emission | 3 grams per hour |
| HHV efficiency | Not listed |
| Heat output | 10,800–34,100 BTU/hr |
| Firebox | Not listed |
| CO | Not listed |
| Certified fuel | Not listed |
| Test method | Not listed |
| 2020 NSPS | 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.
- O-2/90
Other model lines from this manufacturer
- B/A Previously certified
- BBF Previously certified
- BBF-6, BBF-I Previously certified
- Combo Air OC Previously certified
- E-1/90 Previously certified
- E-2 Previously certified
- E1-6, E1-I Previously certified
- Inglenook INGW-02 Previously certified
- NC-6D Previously certified
- O-2 Previously certified
- OV-21 Previously certified
- OV-2100 Previously certified
- OV-2600 Previously certified
- OV-26BF-I Previously certified
- OV-3000 Previously certified
- Patriot Previously certified
- R-6 Previously certified
- R/90 Previously certified
- SBF/A Previously certified
Nearest model lines by EPA figures
Nearest means the smallest absolute difference on that EPA figure, among other Wood Stove model lines that list it. Ties are ordered by model name.
Emission
- 2370 — 3 grams per hour
- Arrow 55 — 3 grams per hour
- Ashley APC2,APC2C; King KC2,KC2B; Atlanta AC2,AC2B — 3 grams per hour
- Ashley C-92 — 3 grams per hour
- Avalon Pendelton 90/Pendelton 45 — 3 grams per hour
HHV efficiency
EPA does not list an HHV efficiency to compare, or no other line lists one.
Heat output
- Ashley AFS24, King K3, cat., freestanding/insert — 10,300–34,600 BTU/hr
- Ashley APS5,APS5B; King KC5,KC5B; Atlanta AC5,AC5B — 9,400–35,400 BTU/hr
- Challenger MMX — 11,200–33,800 BTU/hr
- Clydesdale 8490 — 11,900–33,100 BTU/hr
- Clydesdale 8491 — 11,900–33,100 BTU/hr
Country Flame Technologies, Inc. hub · EPA Certified Wood Heater Database