OS/1
Previously certified
EPA lists OS/1 under Oregon Woodstoves, Inc. as a previously certified catalytic wood stove.
The listed emission rate is 1.4 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 | 1.4 grams per hour |
| HHV efficiency | Not listed |
| Heat output | 7,800–40,000 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.
- OS/1
Other model lines from this manufacturer
- 1, Design 01 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
- 38SFC_D_II and 38ST_D_II Series: Elegance ST 42 II, Astra Duo 38 II, Monarch See-Through 38 II, Wayland See-Through 38 II, Novo Duo 38 II – Cast Iron, Novo Duo 38 II – Soapstone — 1.4 grams per hour
- Answer NexGen Hybrid — 1.4 grams per hour
- Brenden BR-60 — 1.4 grams per hour
- Catalytic Fireview Soapstone Stove #205 — 1.4 grams per hour
- Dutchwest Large Convection Heater 2461 — 1.4 grams per hour
HHV efficiency
EPA does not list an HHV efficiency to compare, or no other line lists one.
Heat output
- 42 Apex NexGen-Hybrid — 9,795–38,005 BTU/hr
- Breckwell SW740 — 11,100–36,700 BTU/hr
- FP-8 — 10,900–36,900 BTU/hr
- Mini-Caddy — 10,900–36,900 BTU/hr
- Rose Bay KTXRB — 10,300–37,500 BTU/hr
Oregon Woodstoves, Inc. hub · EPA Certified Wood Heater Database