EPA-certified wood heater specs and emissions
459 heaters from the EPA's Certified Wood Heater Database across 91 brands — certified emission rates, HHV efficiency and heat output.
- Coverage
- 459 heaters · 198 currently certified · 91 brands
- Data snapshot
Methodology — every formula, and what this data cannot tell you.
What size stove do you need?
Enter your square footage, climate and insulation and the sizing tool returns a BTU range, then points at certified models inside it — oversizing is the most common wood-heat mistake, and it makes a stove smoulder rather than burn clean.
Coverage note 198 of the 459 models are currently certified and in production. The rest stay searchable as previously certified references — useful if you are identifying an installed stove — but they are excluded from rankings and from search engines.
Browse by type
- Wood stoves 258 models Room heaters burning cord wood; the largest and most competitive category.
- Pellet stoves 7 models Hopper-fed and thermostat-controlled, burning manufactured pellets.
- Forced-air furnaces 27 models Central heaters feeding ductwork rather than heating one room.
- Hydronic heaters 167 models Boilers heating water for radiators, baseboards or in-floor loops.
More ways to narrow
- All certified wood heaters (459)
- Catalytic Wood Stoves & Heaters (64)
- Non-Catalytic Wood Stoves & Heaters (360)
- Hybrid Wood Stoves (Catalytic + Secondary Burn) (34)
- High-Efficiency Wood Heaters (≥75% HHV) (221)
- Low-Emission Wood Heaters (Under 2 g/hr) (273)
- Large-Firebox Wood Stoves (3+ cu ft) (72)
- Small Wood Stoves (Under 1.5 cu ft) (65)
- Currently Certified Wood Heaters (In Production) (198)
Most efficient certified stoves
Higher heating value efficiency as certified under the EPA test method, tie-broken by the lower emission rate. Currently certified room heaters only.
| # | Model | Efficiency (HHV) | Emissions | Heat output |
|---|---|---|---|---|
| 1 | Blaze King Industries 30.2 Series: Sirocco 30.2 (SC30.2) | 83% | 0.81 g/hr | 36,076 BTU/hr |
| 2 | Gruppo Piazzetta S.P.A Sahara | 83% | 1.3 g/hr | 39,422 BTU/hr |
| 3 | Blaze King Industries Princess PE32 (2) | 82% | 0.55 g/hr | 34,435 BTU/hr |
| 4 | Hearth and Home Technologies P40i-C | 82% | 0.69 g/hr | 33,126 BTU/hr |
| 5 | Hearthstone Quality Home Heating Products Green Mountain 80 8680 | 81% | 0.67 g/hr | 33,396 BTU/hr |
| 6 | SMG Hearth and Home HP 40 | 81% | 0.74 g/hr | 26,224 BTU/hr |
| 7 | Blaze King Industries King KE40 (3) | 81% | 1 g/hr | 38,516 BTU/hr |
| 8 | Travis Industries 44 Elite NexGen-Hybrid | 81% | 1.1 g/hr | 54,510 BTU/hr |
Certified figures come from a standardized test crib, not from your firewood. Real-world efficiency depends heavily on moisture content — see seasoned wood.
Best stove for your situation
Sized from certified heat output — coverage math and emissions rankings, not top-ten filler.
- Best Wood Stove for a Small Cabin (Under 1,000 sq ft)
- Best Wood Stove for a Medium Home (1,200–2,000 sq ft)
- Best Wood Stove for a Large Home (2,000+ sq ft)
- Best Wood Stove for a Garage or Workshop
- Cleanest-Burning Wood & Pellet Stoves
- Highest-Efficiency Wood & Pellet Stoves (HHV)
- Best Catalytic Wood Stoves
- Best Non-Catalytic Wood Stoves
Frequently compared
- Blaze King Industries 20.2 Series: Ashford 20.2 (AF20.2)
- FPI/Regency Fireplace Products Alterra Pro I3000 Series (I300R
- Hearth and Home Technologies P40i-C
- Hearthstone Quality Home Heating Products Clydesdale 8492
- Jotul North America (Jotul U.S.A., Inc.) C550 V2
- Kuma Stove And Iron Works K-181 Series: Aspen LE-1
- MF Fire Nova 2C
- New Buck Corporation (Buck Stove Corp.) 21NC
- Pacific Energy Fireplace Products Limited NEO 1.6 LE2 Model Line (Vista LE2
- SMG Hearth and Home HP 40
- Stove Builder International 1.4 Series (Osburn 950
- Travis Industries 36 Elite NexGen-Hybrid
Buying and installation guides
- Guide Will a pellet stove work during a power outage?
- Guide Wood stove vs pellet stove: fuel, effort, and what the certified data shows
- Guide How to read EPA wood stove certification data (g/hr, HHV, Step 2)
- Guide Wood stove sizing: match firebox and BTU to your space
- Guide Catalytic vs non-catalytic wood stoves (and hybrids)
- Guide The wood stove tax credit (25C): expired federally — what remains
- Guide Hydronic heaters (wood boilers) explained: indoor, outdoor, and gasification
- Guide Installing a wood stove: clearances, hearth pads, and chimney basics
- Guide Firewood moisture and seasoning: the 20% rule that makes any stove burn clean
Guides are written and checked by a person against the dataset, the cited standards, or manufacturer documentation — see the editorial policy. Everything above them on this page is generated from the dataset.
New to wood heat? Start with the glossary — emission rate (g/hr), HHV efficiency, and seasoned wood in plain English.