EF5/Enviro P4
Previously certified
EPA lists EF5/Enviro P4 under Sherwood Industries, Ltd. as a previously certified pellet stove.
The listed emission rate is 1.3 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 | Pellet Stove |
| Subtype | Non-Catalytic Stove |
| Emission | 1.3 grams per hour |
| HHV efficiency | Not listed |
| Heat output | 8,200–22,900 BTU/hr |
| Firebox | Not applicable |
| CO | Not listed |
| Certified fuel | Wood Pellets |
| 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.
- EF5/Enviro P4
Other model lines from this manufacturer
- EF2-1, Chatham-1, Davenport-1, Kinderhook-1 Currently certified
- Enviro - Meridian-2, Meridian FPI-2, Meridian Cast Iron-2, Regency Greenfire GF55-2, GFI55-2 Currently certified
- Enviro – Maxx-1 Currently certified
- Enviro M55-FS-2, Enviro M55C-FS-2, Enviro M55C-FPI-2, FPI GC60-2, and FPI GCI60-2 Currently certified
- Enviro Mini 2, Enviro P3-2 Regency Greenfire GF40-2 Currently certified
- CH-77, CH-84 Previously certified
- EF2, Chatham, Davenport and Kinderhook Previously certified
- EF3, Meridan, Vista Flame 100, Greenfire GF55, GF55FPI Previously certified
- EMPRESS FPI, Milan Previously certified
- Empress FS Previously certified
- Enviro - M55 FS, M55C-FPI, Regency Greenfire – GC60, GCI60 Previously certified
- Enviro – Meridian-1, Meridian FPI, Meridian Cast Iron, Regency Greenfire – GF55, GFI55 Previously certified
- Enviro – Mini, P3, Regency Greenfire – GF40 Previously certified
- Enviro 1200, 1200I, Vista Flame 1200, 1200I, 1200 Venice (Kodiak, Boston, Cabello) Previously certified
- Enviro 1700I, 1700 and Vista Flame 1700I, 1700, 1700 Venice (Kodiak, Boston, Cabello) Previously certified
- Enviro Fire 1000FS and Vista Flame 1000FS, 1000 Previously certified
- Enviro M55, M55C, VF55, Greenfire/Hampton GC60 Previously certified
- Greenfire GF55, GFI55 Previously certified
- Maxx-B Previously certified
- Mini (P3)Greenfire GF40 Previously certified
- Vista Flame 1600 FS, 1600 FPI, Envirofire 1600 FS, 1600 FPI Previously certified
- Vista Flame 2100 FS, Envirofire 2100 FS Previously certified
- Vista Flame Envirofire 1000 Previously certified
- Vista Flame Envirofire 1500 Previously certified
- Vista Flame Envirofire 2000 Previously certified
Nearest model lines by EPA figures
Nearest means the smallest absolute difference on that EPA figure, among other Pellet Stove model lines that list it. Ties are ordered by model name.
Emission
- 5780, AP5780, VG5780, SP5780, and SP58 — 1.3 grams per hour
- 6041, 6041I, SP6000 — 1.3 grams per hour
- Ashby-P II — 1.3 grams per hour
- Austroflamm Wega II — 1.3 grams per hour
- Breckwell and Golden Eagle: SP22E, SP22Ei, 5040E and 5040Ei — 1.3 grams per hour
HHV efficiency
EPA does not list an HHV efficiency to compare, or no other line lists one.
Heat output
- GAP 2020 — 8,026–23,002 BTU/hr
- Model WP-18 — 10,000–21,300 BTU/hr
- RC 120 115-00-003A — 9,600–21,700 BTU/hr
- Enviro Mini 2, Enviro P3-2 Regency Greenfire GF40-2 — 6,881–23,892 BTU/hr
- Harman Accentra-2 — 6,253–25,210 BTU/hr
Sherwood Industries, Ltd. hub · EPA Certified Wood Heater Database