Consumers should beware that most manufacturer websites post unreliable and exaggerated efficiencies, except for a small group of companies. Some companies may not post the efficiencies of their pellet stoves because they are poorly designed and have efficiencies below 65%. Click here for an analysis of stove efficiencies.
In addition to the approximately 175 stoves on the EPA list with actual efficiencies, the Alliance for Green heat obtained actual efficiencies from the EPA on five other stoves. The Harman Accentra 52i at 76%, the Quadrafire Mt. Vernon E2 at 75%, and the Ravelli 100 at 70% and Ravelli 80 at 56%. The Alliance obtained these efficiencies through a Freedom of Information Act request and received this chart.
In addition to the approximately 175 stoves on the EPA list with actual efficiencies, the Alliance for Green heat obtained actual efficiencies from the EPA on five other stoves. The Harman Accentra 52i at 76%, the Quadrafire Mt. Vernon E2 at 75%, and the Ravelli 100 at 70% and Ravelli 80 at 56%. The Alliance obtained these efficiencies through a Freedom of Information Act request and received this chart.
How to read this chart: Some of the Model Names have been shortened to fit into the format of this blog. To check the official source of certified stoves that would contain the full model name(s), refer to the list of EPA certified stoves. The emission rate is the number of grams of particulate matter that make up smoke, per hour. The actual efficiency refers to a average of the range of heat outputs that the stove is capable of, calculated using the CSA B415.1-10, which uses the higher heating value (HHV). Under type of stove, "Cat" refers to catalytic stoves, "Hybrid" refers to stoves that have both catalytic and non-catalytic technology, and "Non Cat" refers to non-catalytic stoves.
Click here for a downloadable list of EPA certified stoves with verified efficiencies in order of their efficiencies and here for a downloadable list of the stoves in order of their emissions. Carbon monoxide values are also included on this list for the few stoves that EPA has listed CO for.
Click here for a downloadable list of EPA certified stoves with verified efficiencies in order of their efficiencies and here for a downloadable list of the stoves in order of their emissions. Carbon monoxide values are also included on this list for the few stoves that EPA has listed CO for.
| Company | Model | G/hr | Efficiency | Type | CO |
| Extraflame S.P.A. | V5.2 | 0.59 | 87 | Pellet | |
| Extraflame S.P.A. | V3.4 | 1.1 | 85 | Pellet | |
| Kuma Stove Inc. | K100/300/400 SEQUOIA | 2.20 | 84 | Catalytic | |
| Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) | HP 61 | 1.2 | 83 | Pellet | |
| Woodstock Soapstone Company, Inc. | Ideal Steel Hybrid 210 | 1 | 82 | Cat/hybrid | |
| Blaze King Industries, Inc. | Blaze King King Catalytic KEJ 1107 | 1.8 | 82 | Catalytic | |
| Extraflame S.P.A. | V4.5 | 0.93 | 82 | Pellet | |
| Hearth and Home Technologies | PelPro PPC90, PelPro TSC90, Pleasant Hearth PHC90 | 1.1 | 82 | Pellet | |
| Blaze King Industries, Inc. | Princess 35 PE35 | 2.1 | 81 | Catalytic | |
| Blaze King Industries, Inc. | Princess PEJ 1006 | 2.40 | 81 | Catalytic | |
| Fireplace Products International Limited | Regency F3500 | 1.10 | 81 | Catalytic | |
| Woodstock Soapstone Company, Inc. | Progress Hybrid Soapstone Stove #209 | 1.3 | 81 | Catalytic | |
| Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) | HP50S Comfortbilt | 2.5 | 81 | Pellet | |
| Travis Industries, Inc. | Cape Cod | 0.45 | 80 | Cat/hybrid | |
| Travis Industries, Inc. | LG Flushwood Insert Hybrid - Fyre | 0.58 | 80 | Cat/hybrid | |
| Blaze King Industries, Inc. | Ashford 30.1 (AF30.1), Chinook 30.1 (CK30.1), Sirocco 30.1 (SC30.1) | 0.8 | 80 | Catalytic | |
| Blaze King Industries, Inc. | Princess Insert PI 1010A | 2 | 80 | Catalytic | |
| Fireplace Products International Limited | Regency Cl2600 and HI400 | 1.80 | 80 | Catalytic | |
| Ravelli SRL | RV100 Classic | 0.7 | 80 | Pellet | 0.04 |
| Fireplace Products International Limited | Regency F5100 | 1.5 | 79 | Catalytic | |
| Innovative Hearth Products | Montecito Estate CAT and WCT6940WS | 1.3 | 79 | Catalytic | |
| Ravelli SRL | RC120 Touch, Atena C, and Vitoria C | 0.62 | 79 | Pellet | 0.02 |
| Ravelli SRL | RV120 Touch, Atena V and Vitoria V | 0.62 | 79 | Pellet | 0.05 |
| 509 Fabrications, Inc. | 509-1 Optimum | 1.5 | 79 | Pellet | 1.6 |
| APR Industries Ltd. | Kozi 100 Free Standing and Insert and KSH 120 | 0.61 | 79 | Pellet | |
| England's Stove Works, Inc. | 25-SSP01, 25-SSP01S, 55-SHSSP01, 55-SHSSP01S, 55-TRSSP01, and 55-TRSSP01S | 0.56 | 79 | Pellet | |
| Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) | HP 21 | 1.3 | 79 | Pellet | |
| SMG Hearth and Home, LLC. | HP 21 | 1.3 | 79 | Pellet | |
| Travis Industries, Inc. | Rockport Hybrid-Fyre | 0.8 | 78 | Cat/hybrid | |
| Hearth and Home Technologies | Quadra Fire Mount Vernon E2-C and Quadra Fire Mount Vernon E2-C Insert | 0.7 | 78 | Pellet | 0.15 |
| APR Industries Ltd. | BayWin Free Standing and Insert | 0.56 | 78 | Pellet | |
| Ravelli SRL | Francesca 2015, Monica 2015, and RV 80 Ceramica. | 0.6 | 78 | Pellet | |
| Seraph Industries | Genesis 106/108 | 2.10 | 78 | Pellet | |
| Woodstock Soapstone Company, Inc. | Absolute Steel Hybrid 211 | 0.50 | 77 | Cat/hybrid | |
| EcoVision Ltd. | Kiwi VcV 2.1 | 1.3 | 77 | Catalytic | 0.38 |
| Hearthstone Quality Home Heating Products Inc. | Green Mountain 40 8640 | 0.9 | 77 | Catalytic | 0.67 |
| Blaze King Industries, Inc. | Chinook / Sirocco/Ashford 20 | 1.30 | 77 | Catalytic | |
| Blaze King Industries, Inc. | Sirocco SC25, Ashford AF25, Boxer 24 (BX24) | 0.9 | 77 | Catalytic | |
| Blaze King Industries, Inc. | Ashford 20.1, Chinook 20.1, Sirocco 20.1 | 1.30 | 77 | Catalytic | |
| ARADA STOVES Ltd. | Farringdon 16 | 1.5 | 77 | Non Catalytic | 0.91 |
| Thelin Company Inc. (Cardon Products) | Thelin Parlour 3000 | 0.43 | 77 | Pellet | 0.08 |
| Sherwood Industries, Ltd. | EF2-1, Chatham-1, Davenport-1 and Kinderhook-1 | 1.4 | 77 | Pellet | 0.12 |
| Hearth and Home Technologies | Harman Absolute 63 | 1.4 | 77 | Pellet | 0.925 |
| Ardisam | Serenity Castle | 1.1 | 77 | Pellet | |
| Travis Industries, Inc. | Small Flush Wood Hybrid Fyre | 0.89 | 76 | Catalytic | |
| Hase Kaminofenbau (Hearthstone Quality Home products Inc.) | Bari 8170 and Lima 8150 | 3.6 | 76 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F55 | 3.50 | 76 | Non Catalytic | |
| J. A. Roby | Polaris, Centauri, Vega, Sirius, Antares, and Rigel | 1.4 | 76 | Non Catalytic | |
| Hearth and Home Technologies | PelPro PP130 | 1.60 | 76 | Pellet | 0.2 |
| Hearth and Home Technologies | Harman Accentra 52i-TC | 1.1 | 76 | Pellet | 0.25 |
| England's Stove Works, Inc. | 55-SHPCB120, 55-TRPCB120 and 25-CB120 | 1.4 | 76 | Pellet | 0.27 |
| Hearth and Home Technologies | Harman Accentra 52i | 1.5 | 76 | Pellet | 0.3 |
| APR Industries Ltd. | Previa | 1 | 76 | Pellet | |
| Ravelli SRL | Roma (034-00-001A | 0.74 | 76 | Pellet | |
| Blaze King Industries, Inc. | Chinook /Sirocco/Ashford 30 | 0.97 | 75 | Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F118 CB | 3.50 | 75 | Non Catalytic | |
| Pacific Energy Fireplace Products Limited | TN20 | 2.1 | 75 | Non Catalytic | |
| Pacific Energy Fireplace Products Limited | Neo 1.6, NEO 1.6 Insert, Newcastle 1.6, NEOSTONE 1.6 | 3.4 | 75 | Non Catalytic | |
| Sherwood Industries, Ltd. | Enviro 1700I, 1700 and Vista Flame 1700I, 1700, 1700 Venice (Kodiak, Boston, Cabello) | 4.50 | 75 | Non Catalytic | |
| Hearth and Home Technologies. | Harman Allure 50 | 1.5 | 75 | Pellet | 0.505 |
| Hearth and Home Technologies | Quadrafire Discovery II (3100 ACC Series, 31M-ACC Limited Edition) | 1.10 | 74 | Non Catalytic | 1.5 |
| Hearth and Home Technologies | Discovery III, 4300ACC | 1.10 | 74 | Non Catalytic | 1.6 |
| Hearth and Home Technologies | Quadra Fire 57ST-ACC-C | 1.8 | 74 | Non Catalytic | 2.5 |
| Hearth and Home Technologies | Quadra Fire Explorer I | 2.2 | 74 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Tribute 8040 | 3 | 74 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Craftsbury 1 8391 | 3.1 | 74 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F45 | 2.3 | 74 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F500 | 3.20 | 74 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | C350 | 4 | 74 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | Jotul F600 | 4.10 | 74 | Non Catalytic | |
| Pacific Energy Fireplace Products Limited | Neo 2.5, Neo 2.5 Insert, and Newcastle 2.5 | 2.9 | 74 | Non Catalytic | |
| Travis Industries, Inc. | Evergreen | 3.6 | 74 | Non Catalytic | |
| United States Stove Company | VG 150 | 2.8 | 74 | Non Catalytic | |
| Pacific Energy Fireplace Products Limited | Neo 1.2 and NEOSTONE 1.2 | 2.9 | 74 | Pellet | |
| Travis Industries, Inc. | 42 Apex | 0.7 | 73 | Catalytic | |
| Pacific Energy Fireplace Products Limited | True North TN20 and TN20 Insert Series B | 1.6 | 73 | Non Catalytic | 0.77 |
| Hearth and Home Technologies | QuadraFire 31M-ACC-C and QuadraFire Discovery-II-C | 1.9 | 73 | Non Catalytic | 1.6 |
| Hearth and Home Technologies | Quadrafire 2700I | 3.5 | 73 | Non Catalytic | 1.7 |
| Boru Stove Company | Carraig Mor BCMUS | 3.90 | 73 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F100 Nordic QT | 3 | 73 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F118 Black Bear | 3 | 73 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F3CBII | 3.80 | 73 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | C450, Tamarack | 4.4 | 73 | Non Catalytic | |
| Kuma Stove Inc. | Wood Classic HT-2 | 3.3 | 73 | Non Catalytic | |
| Kuma Stove Inc. | Scott HT-1 (Tamarack) | 3.50 | 73 | Non Catalytic | |
| Kuma Stove Inc. | Ashwood | 3.5 | 73 | Non Catalytic | |
| Unforgetable Fire LLC | Katydid | 1.9 | 73 | Non Catalytic | |
| Hearth and Home Technologies | Harman P61a | 1.7 | 73 | Pellet | 0.05 |
| Hearth and Home Technologies | Harman P68 | 1.3 | 73 | Pellet | 0.1 |
| Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) | HP22 ComfortBilt | 1.9 | 73 | Pellet | 0.16 |
| Pacific Energy Fireplace Products Limited | True North 40 Insert | 0.69 | 73 | Pellet | |
| American Energy Systems, Inc. (AES) | Baby Country Side | 1 | 73 | Pellet | |
| Hearth and Home Technologies | Quadrafire Adventure II | 2.4 | 72 | Non Catalytic | 1.62 |
| Hearth and Home Technologies | Quadrafire 3100 I ACC | 2 | 72 | Non Catalytic | 1.7 |
| RAIS A/S | Viva 100 L (CA) USA, Viva 100 L G (CA) USA, Viva 100 L Classic (CA) USA, Viva 100 L G Classic (CA) USA, Viva 120 L (CA) USA, Viva 120 L G (CA) USA, Viva 120 L Classic (CA) USA, Viva 120 L G Classic (CA) USA, Viva 160 L (CA) USA, Viva 160 L G (CA) USA, Viva 160 L Classic (CA) USA, Viva 160 L G Classic (CA) USA | 1.1 | 72 | Non Catalytic | 1.9 |
| Hase Kaminofenbau (Hearthstone Quality Home products Inc.) | Tula 8190/8191 | 2.5 | 72 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Tula 8190/8191 | 2.5 | 72 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Castleton 8030 | 2.7 | 72 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Equinox 8000 | 3.10 | 72 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Clydesdale 8491 | 3.2 | 72 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Morgan 8470 | 4.30 | 72 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | 50TL | 2.8 | 72 | Non Catalytic | |
| Kuma Stove Inc. | Aspen | 4.10 | 72 | Non Catalytic | |
| Sherwood Industries, Ltd. | Enviro 1200, 1200I, Vista Flame 1200, 1200I, 1200 Venice (Kodiak, Boston, Cabello) | 3.40 | 72 | Non Catalytic | |
| United States Stove Company | 5780, AP5780, VG5780, SP5780, and SP58 | 1.3 | 72 | Pellet | 0.21 |
| Hearth and Home Technologies | Harman XXV-TC | 1.7 | 72 | Pellet | 0.58 |
| Pacific Energy Fireplace Products Limited | True North TN40 | 1.4 | 72 | Pellet | |
| Blaze King Industries, Inc. | Briarwood II/90 | 3.50 | 71 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Manchester 2 8361 | 2.1 | 71 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Manchester 8360 | 3 | 71 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F602 CB | 3.40 | 71 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | C550 CB | 4.5 | 71 | Non Catalytic | |
| ARADA STOVES Ltd. | Farringdon 12 | 2.8 | 71 | Non Catalytic | |
| United States Stove Company | AF700 and CF700M | 0.4 | 71 | Non Catalytic | |
| Hearth and Home Technologies | Harman Accentra-2 | 0.62 | 71 | Pellet | 0.07 |
| American Energy Systems, Inc. (AES) | Little Rascal | 1.1 | 71 | Pellet | |
| Hearth and Home Technologies | Mount Vernon AE Freestanding and Insert | 1.7 | 71 | Pellet | |
| MF Fire | Catalyst | 1.9 | 70 | Cat/hybrid | 1.2 |
| Foyers Supreme Incorporated | STUV 1658IN, STUV 1658CUBE, STUV 1658H, STUV 1658-Z | 1.5 | 70 | Non Catalytic | 1.6 |
| Hearth and Home Technologies | Quadrafire Adventure III | 2.9 | 70 | Non Catalytic | 2.65 |
| England's Stove Works, Inc. | 15-SSW02, 50-SHSSW02, and 50-TRSSW02 | 3.5 | 70 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Shelburne 1 8371 | 2.10 | 70 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Heritage 8023 | 2 | 70 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Phoenix 8612 | 2.40 | 70 | Non Catalytic | |
| Foyers Supreme Incorporated | 30-Compact, 30-H | 2.8 | 70 | Non Catalytic | |
| Hearth and Home Technologies | Harman P43 | 1.30 | 70 | Pellet | 0 |
| Hearth and Home Technologies | Quadra Fire CB1200/Classic Bay 1200 | 1.10 | 70 | Pellet | 0 |
| Hearth and Home Technologies | Harman P35i | 1.5 | 70 | Pellet | 0 |
| Stove Builder International Inc. | Osburn 2500, 55 Series Eco-55 and Eco-55 ST | 0.96 | 70 | Pellet | 0.13 |
| Stove Builder International, Inc. | Osburn 3000 and Cambridge | 2.9 | 70 | Pellet | 0.68 |
| Even Temp, Inc | Prescott EXP and Prescott EXL | 0.53 | 70 | Pellet | |
| Heat Tech Industries | HTP 26 Bay, HTP26 Bay Pedestal/Insert | 0.54 | 70 | Pellet | |
| Hearth and Home Technologies | Quadra Fire Explorer III | 2 | 69 | Non Catalytic | |
| United States Stove Company | 5710, AP5710, VG5710, 5501S, AP5501S and VG5501S | 1 | 69 | Pellet | |
| Wiseway Pellet Stoves (United States Stove Company) | GW1949 | 1.90 | 69 | Pellet | |
| Morso Jernstoberi A/S | 3112B/3142B | 1.9 | 68 | Non Catalytic | 0.93 |
| Hearthstone Quality Home Heating Products Inc. | Homestead 8570 | 1.90 | 68 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | Castine F400, F400 | 3.80 | 68 | Non Catalytic | |
| United States Stove Company | 1269E | 4.2 | 68 | Non Catalytic | |
| Foyers Supreme Incorporated | Ambiance Elegance 36 24SF | 1.8 | 67 | Non Catalytic | 1.7 |
| Foyers Supreme Incorporated | Fusion 18 18FN | 1.9 | 67 | Non Catalytic | 1.8 |
| OVO LLC | Caldera | 3.4 | 67 | Non Catalytic | 2 |
| Foyers Supreme Incorporated | STUV 1668IN, STUV 1668CUBE, STUV 1668H, STUV 1668-Z | 2.3 | 67 | Non Catalytic | 2.6 |
| Foyers Supreme Incorporated | STUV 1678IN, STUV 1678CUBE, STUV 1678H, STUV 1678-Z | 3.1 | 67 | Non Catalytic | 3.1 |
| Hearthstone Quality Home Heating Products Inc. | Heritage (8022) | 2.70 | 67 | Non Catalytic | |
| Hearthstone Quality Home Heating Products Inc. | Mansfield 2 8012 | 2.90 | 67 | Non Catalytic | |
| Pacific Energy Fireplace Products Limited | FP25 | 3.5 | 67 | Non Catalytic | |
| United States Stove Company | 2016E | 3.7 | 67 | Non Catalytic | |
| Even Temp, Inc | Eclipse-P | 1.6 | 67 | Pellet | |
| Hearth and Home Technologies | Harman Advance | 1.8 | 67 | Pellet | |
| American Energy Systems, Inc. (AES) | 3500P, 35001, and 3502 | 1 | 67 | Pellet | |
| RSF / ICC - Industrial Chimney Company Inc. | Focus 320 SBR and Onyx SBR | 1.4 | 66 | Non Catalytic | 1.5 |
| Hearthstone Quality Home Heating Products Inc. | Nestor Martin S43, SP43, H43, and C43 | 4.2 | 66 | Non Catalytic | 1.78 |
| GHP Group | WS-2720-B | 4.50 | 66 | Non Catalytic | |
| Jotul North America (Jotul U.S.A., Inc.) | F370 | 2.6 | 66 | Non Catalytic | |
| Hearth and Home Technologies | Harman XXV | 1.8 | 66 | Pellet | 0.3 |
| Even Temp, Inc | Hastings | 1.1 | 66 | Pellet | |
| Even Temp, Inc | Ashby-P | 1 | 66 | Pellet | |
| Heat Tech Industries | HTP 26 Standard, HTP26 Standard Pedestal/Insert | 0.77 | 66 | Pellet | |
| Pacific Energy Fireplace Products Limited | FP16 | 3.10 | 65 | Non Catalytic | |
| J. A. Roby | Cook, Cicero, Chief, Cuistot, Elda, and Marmiton | 1.9 | 64 | Non Catalytic | 0.03 |
| Hearthstone Quality Home Heating Products Inc. | WFP100 | 1.6 | 64 | Non Catalytic | 2.6 |
| Stove Builder International, Inc. | HE350, FP-15-Waterloo, Horizon, and Monaco XL, WFP100 | 1.6 | 64 | Non Catalytic | 2.6 |
| United States Stove Company | 2469E | 4.2 | 64 | Non Catalytic | |
| Foyer Supreme Incorporated | Fusion FN | 4.4 | 64 | Non Catalytic | |
| Wolf Steel Ltd. | NZ3000H | 3.3 | 63 | Catalytic | |
| Wittus Inc. | Shaker | 3.9 | 63 | Non Catalytic | 1.6 |
| Sierra Products, Inc. | EasyFire Pellet Stove, EF3801, EF5001, EF4001 | 0.82 | 63 | Pellet | 0.56 |
| Even Temp, Inc | Element-P | 0.66 | 63 | Pellet | |
| United States Stove Company | 5660E, AP5660, AP5660L, AP5660PE, and DNMP566 | 1.9 | 62 | Pellet | |
| RSF/ICC-Industrial Chimney Company. | Delta Fusion | 1.3 | 60 | Non Catalytic | |
| Thelin Company Inc. (Cardon Products) | Thelin Gnome | 1.2 | 59 | Pellet | 0.16 |
| LMF Manufacturing, Ltd. | America's Heat B-100 | 1.7 | 58 | Pellet | |
| Sherwood Industries, Ltd. | EF2, Chatham, Davenport and Kinderhook | 1.8 | 58 | Pellet |
