Friday, June 17, 2016

Wood and pellet stoves with actual efficiency numbers


Updated, May 14, 2018 - About 190 wood and pellet stoves, 33% of all models, have been tested by accredited laboratories for efficiency, giving consumers vital information that hundreds of other models don't have. Consumers should consider buying one of these stoves if they want a stove that has a reliable efficiency number.  However, with wood stoves, efficiency depends partly on the operator.  The listed efficiency of wood stoves represents what consumers can get if they use dry wood and give the stove sufficient air.  With pellet stoves, the efficiency reported by the lab is a good approximation of the efficiency the consumer can expect.  

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 190 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. Carbon monoxide values are also included on this list for the few stoves that EPA has listed CO for.


Company Model Emissions Efficiency Type CO
Extraflame S.P.A.   V5.2 0.59 87 Pellet  
Extraflame S.P.A.   V3.4 1.1 85 Pellet  
Paromax International LLC Rafael 55a, Europa 75a 0.22 85 Pellet 0.004
Gruppo Piazzetta S.P.A. LIA, LISA 0.7 84 Pellet 0.03
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  
SMG Hearth and Home, LLC. HP61  1.2 83 Pellet  
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  
Woodstock Soapstone Company, Inc. Ideal Steel Hybrid 210 1.0 82 Catalytic  
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  
Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) HP50S Comfortbilt  2.5 81 Pellet  
Woodstock Soapstone Company, Inc. Progress Hybrid Soapstone Stove #209 1.3 81 Catalytic  
Blaze King Industries, Inc. Ashford 30.1 (AF30.1), Chinook 30.1 (CK30.1), Sirocco 30.1 (SC30.1) 0.80 80 Catalytic  
Blaze King Industries, Inc. Princess Insert PI 1010A 2.0 80 Catalytic  
Fireplace Products International Limited Regency Cl2600 and HI400 1.80 80 Catalytic  
Ravelli SRL RV100 Classic  0.7 80 Pellet 0.04
Travis Industries, Inc. Cape Cod 0.45 80 Catalytic  
Travis Industries, Inc. LG Flushwood Insert Hybrid - Fyre 0.58 80 Catalytic  
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  
Fireplace Products International Limited Regency F5100 1.5 79 Catalytic  
Innovative Hearth Products Montecito Estate CAT and WCT6940WS  1.3 79 Catalytic  
Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) HP 21  1.3 79 Pellet  
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
SMG Hearth and Home, LLC. HP 21  1.3 79 Pellet  
APR Industries Ltd. BayWin Free Standing and Insert 0.56 78 Pellet  
Fireplace Products International Limited F1500 and I1500  1.0 78 Non Catalytic 0.32
Hearth and Home Technologies  Quadra Fire Mount Vernon E2-C and Quadra Fire Mount Vernon E2-C Insert 0.7 78 Pellet 0.15
Ravelli SRL Francesca 2015, Monica 2015, and RV 80 Ceramica. 0.6 78 Pellet  
Seraph Industries Genesis 106/108 2.10 78 Pellet  
Travis Industries, Inc. Rockport Hybrid-Fyre 0.8 78 Catalytic  
ARADA STOVES Ltd.  Farringdon 16 1.5 77 Non Catalytic 0.91
Ardisam Serenity Castle 1.1 77 Pellet  
Blaze King Industries, Inc. Chinook / Sirocco/Ashford 20 1.30 77 Catalytic  
Blaze King Industries, Inc. Ashford AF20.2, Chinook CK20.2, and Sirocco SC20.2 0.73 77 Catalytic 0.83
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  
EcoVision Ltd. Kiwi VcV 2.1  1.3 77 Catalytic 0.38
Hearth and Home Technologies Harman Absolute 63 1.4 77 Pellet 0.925
Hearth and Home Technologies  Intrepid Flexburn 2115-CAT 0.3 77 Catalytic 0.82
Hearthstone Quality Home Heating Products Inc. Castleton 8031  0.7 77 Catalytic 0.72
Hearthstone Quality Home Heating Products Inc. Green Mountain 40 8640  0.9 77 Catalytic 0.67
Sherwood Industries, Ltd. EF2-1, Chatham-1, Davenport-1 and Kinderhook-1 1.4 77 Pellet 0.12
Thelin Company Inc. (Cardon Products) Thelin Parlour 3000  0.43 77 Pellet 0.08
Woodstock Soapstone Company, Inc. Absolute Steel Hybrid 211 0.5 77 Catalytic  
APR Industries Ltd. Previa 1.0 76 Pellet  
Blaze King Industries, Inc. Ashford AF30.2, Chinook CK30.2, and Sirocco SC30.2  0.8 76 Catalytic 0.85
England's Stove Works, Inc. 55-SHPCB120, 55-TRPCB120 and 25-CB120 1.4 76 Pellet 0.27
Hase Kaminofenbau (Hearthstone Quality Home products Inc.) Bari 8170 and Lima 8150 3.6 76 Non Catalytic  
Hearth and Home Technologies PelPro PP130 1.60 76 Pellet 0.2
Hearth and Home Technologies  Harman Accentra 52i 1.5 76 Pellet 0.3
Hearth and Home Technologies  Harman Accentra 52i-TC  1.1 76 Pellet 0.25
J. A. Roby Polaris, Centauri, Vega, Sirius, Antares, and Rigel 1.4 76 Non Catalytic  
Jotul North America (Jotul U.S.A., Inc.) F55 3.50 76 Non Catalytic  
Ravelli SRL Roma (034-00-001A 0.74 76 Pellet  
Travis Industries, Inc. Small Flush Wood Hybrid Fyre 0.89 76 Catalytic  
Blaze King Industries, Inc. Chinook /Sirocco/Ashford 30 0.97 75 Catalytic  
Hearth and Home Technologies. Harman Allure 50 1.5 75 Pellet 0.505
Jotul North America (Jotul U.S.A., Inc.) F118 CB 3.50 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 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 Explorer I 2.2 74 Non Catalytic  
Hearth and Home Technologies  Quadra Fire 57ST-ACC-C 1.8 74 Non Catalytic 2.5
Hearth and Home Technologies  Intrepid Flexburn 2115 0.6 74 Non Catalytic 1.2
Hearthstone Quality Home Heating Products Inc. Tribute 8040 3.0 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 4.0 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  
Pacific Energy Fireplace Products Limited Neo 1.2 and NEOSTONE 1.2 2.9 74 Pellet  
Pacific Energy Fireplace Products Limited Summit LE, Summit Classic LE, Alderlea T6 LE, and Summit Insert LE 1.8 74 Non Catalytic 0.02
Travis Industries, Inc. Evergreen 3.6 74 Non Catalytic  
United States Stove Company VG 150 2.8 74 Non Catalytic  
American Energy Systems, Inc. (AES) Baby Country Side 1.0 73 Pellet   
Boru Stove Company Carraig Mor BCMUS 3.90 73 Non Catalytic  
Hearth and Home Technologies Quadrafire 2700I 3.5 73 Non Catalytic 1.7
Hearth and Home Technologies  Harman P68 1.3 73 Pellet 0.1
Hearth and Home Technologies  Harman P61a 1.7 73 Pellet 0.05
Hearth and Home Technologies  QuadraFire 31M-ACC-C and QuadraFire Discovery-II-C 1.9 73 Non Catalytic 1.6
Jotul North America (Jotul U.S.A., Inc.) F100 Nordic QT  3.0 73 Non Catalytic  
Jotul North America (Jotul U.S.A., Inc.) F118 Black Bear 3.0 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  
Morso Jernstoberi A/S 1410B, 1440B, and 1450B 1.8 73 Non Catalytic 0.95
Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) HP22 ComfortBilt  1.9 73 Pellet 0.16
Pacific Energy Fireplace Products Limited True North TN20 and TN20 Insert Series B 1.6 73 Non Catalytic 0.77
Pacific Energy Fireplace Products Limited True North TN10  1.4 73 Non Catalytic 0.77
Pacific Energy Fireplace Products Limited True North 40 Insert  0.69 73 Pellet  
Travis Industries, Inc. 42 Apex  0.70 73 Catalytic  
Unforgettable Fire LLC Katydid 1.9 73 Non Catalytic  
Hase Kaminofenbau (Hearthstone Quality Home products Inc.) Tula 8190/8191 2.5 72 Non Catalytic  
Hearth and Home  Technologies Harman XXV-TC 1.7 72 Pellet 0.58
Hearth and Home Technologies Quadrafire 3100 I ACC 2.0 72 Non Catalytic 1.7
Hearth and Home Technologies  Quadrafire Adventure II 2.4 72 Non Catalytic 1.62
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  
Pacific Energy Fireplace Products Limited True North TN40 1.4 72 Pellet  
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
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
American Energy Systems, Inc. (AES) Little Rascal 1.1 71 Pellet  
ARADA STOVES Ltd.  Farringdon 12  2.8 71 Non Catalytic  
Blaze King Industries, Inc. Briarwood II/90 3.50 71 Non Catalytic  
Hearth and Home Technologies  Mount Vernon AE Freestanding and Insert 1.7 71 Pellet  
Hearth and Home Technologies  Harman Accentra-2 0.62 71 Pellet 0.07
Hearthstone Quality Home Heating Products Inc. Manchester 2 8361 2.1 71 Non Catalytic  
Hearthstone Quality Home Heating Products Inc. Manchester 8360 3.0 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  
Pacific Energy Fireplace Products Limited Super LE, Super Classic LE, Alderlea T5 LE 1.8 71 Non Catalytic 2
England's Stove Works, Inc. 15-SSW02, 50-SHSSW02, and 50-TRSSW02  3.5 70 Non Catalytic  
Even Temp, Inc Prescott EXP and Prescott EXL  0.53 70 Pellet  
Foyers STUV Inc. STUV 1658IN, STUV 1658CUBE, STUV 1658H, STUV 1658-Z  1.5  70 Non Catalytic 1.6
Foyers STUV Inc. 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
Hearth and Home Technologies  Quadrafire Adventure III 2.9 70 Non Catalytic 2.65
Hearthstone Quality Home Heating Products Inc. Shelburne 1 8371 2.10 70 Non Catalytic  
Hearthstone Quality Home Heating Products Inc. Heritage 8023 2.0 70 Non Catalytic  
Hearthstone Quality Home Heating Products Inc. Phoenix 8612 2.40 70 Non Catalytic  
Heat Tech Industries HTP 26 Bay, HTP26 Bay Pedestal/Insert .54 70 Pellet  
MF Fire Catalyst 1.9 70 Catalytic 1.2
New Buck Corporation (Buck Stove Corp.) 21NC 1.7 70 Non Catalytic 6.1
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
Hearth and Home Technologies  Quadra Fire Explorer III 2.0 69 Non Catalytic  
Stove Builder International, Inc. 2.3 Series Escape 1800, Escape 1800-I Insert, 2000 Stove, 2000-I Insert, Harmony 2.3 Stove, Solution 2.3 Stove, Solution 2.3-I Insert, XTD 1.9 Stove, XTD 1.9-I Insert, CW2900 Insert, Destination 2.3-I Insert, HEI 240 Insert, HEI 240R Insert, and Matrix-I Insert 1.5 69 Non-Catalytic 1.5
United States Stove Company 5710, AP5710, VG5710, 5501S, AP5501S and VG5501S 1.0 69 Pellet  
Wiseway Pellet Stoves (United States Stove Company) GW1949 1.90 69 Pellet  
Foyers Supreme Incorporated Astra 24 24SFC  1.9 68 non 1.7
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  
Morso Jernstoberi A/S 3112B/3142B 1.9 68 Non Catalytic 0.93
United States Stove Company 1269E 4.2 68 Non Catalytic  
American Energy Systems, Inc. (AES) 3500P, 35001, and 3502 1.0 67 Pellet   
Even Temp, Inc Eclipse-P  1.6  67 Pellet  
Foyers Supreme Incorporated Fusion 18 18FN  1.9 67 Non Catalytic 1.8
Foyers Supreme Incorporated Ambiance Elegance 36 24SF  1.8 67 Non Catalytic 1.7
Foyers STUV Inc. STUV 1678IN, STUV 1678CUBE, STUV 1678H, STUV 1678-Z  3.1  67 Non Catalytic 3.1
Foyers STUV Inc. STUV 1668IN, STUV 1668CUBE, STUV 1668H, STUV 1668-Z  2.3  67 Non Catalytic 2.6
Hearth and Home Technologies Harman Advance 1.8 67 Pellet  
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  
OVO LLC Caldera 3.4 67 Non Catalytic 2
Pacific Energy Fireplace Products Limited FP25 3.5 67 Non Catalytic  
United States Stove Company 2016E 3.7 67 Non Catalytic  
Energy Distribution Gaya Ardoise, Itaya, Onyx, Gaya Feuille, Symphonia, Antaya, Theïa, and Akan 2.3 66 Non Catalytic 2.3
Even Temp, Inc Hastings  1.1 66 Pellet  
Even Temp, Inc Ashby-P 1.0 66 Pellet  
GHP Group WS-2720-B 4.50 66 Non Catalytic `
Hearth and Home Technologies  Harman XXV 1.8 66 Pellet 0.3
Hearthstone Quality Home Heating Products Inc. Nestor Martin S43, SP43, H43, and C43  4.2 66 Non Catalytic 1.78
Heat Tech Industries HTP 26 Standard, HTP26 Standard Pedestal/Insert .77 66 Pellet  
Jotul North America (Jotul U.S.A., Inc.) F370 2.6 66 Non Catalytic  
RSF / ICC - Industrial Chimney Company Inc. Focus 320 SBR and Onyx SBR 1.4 66 Non Catalytic 1.5
Innovative Hearth Products Ladera CAT 1.8 65 Catalytic 0.18
Pacific Energy Fireplace Products Limited FP16 3.10 65 Non Catalytic  
Foyer Supreme Incorporated Fusion FN 4.4 64 Non-Catalytic  
Hearthstone Quality Home Heating Products Inc. WFP100 1.6 64 Non Catalytic 2.6
J. A. Roby Cook, Cicero, Chief, Cuistot, Elda, and Marmiton  1.9 64 Non Catalytic 1.5
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  
Even Temp, Inc Element-P 0.66 63 Pellet  
Sierra Products, Inc. EasyFire Pellet Stove, EF3801, EF5001, EF4001 0.82 63 Pellet 0.56
Wittus-Fire by Design Shaker 3.9 63 Non Catalytic 1.6
Wolf Steel Ltd. NZ3000H 3.3 63 Catalytic  
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