EPA-Certified Hydronic Heaters (Wood Boilers)

Indoor and outdoor wood boilers that heat water for hydronic (radiator, radiant-floor, or heat-exchanger) distribution — including pellet boilers and cord-wood gasification boilers.

167 certified models in this category.

Model Combustion technologyEmission rateEfficiency (HHV)Heat output (high)Firebox volumeCurrently in production
509 Fabrications zzzzz Catalytic Stove—12 %12 BTU/h—No
Advanced Climate Technologies CP 1000 Non-Catalytic Stove—87 %1030000 BTU/h—No
Advanced Climate Technologies CP 1700 Non-Catalytic Stove—89 %1650000 BTU/h—No
Advanced Climate Technologies CP 500 Non-Catalytic Stove—88 %532000 BTU/h—No
Advanced Climate Technologies CP 850 Non-Catalytic Stove—88 %840000 BTU/h—No
Alternate Heating Systems SE110 Non-Catalytic Stove—67 %121291 BTU/h5.42 cu ftYes
Alternate Heating Systems SE210 Non-Catalytic Stove—71 %155802 BTU/h8.43 cu ftYes
Alternate Heating Systems Wood Gun E155 Non-Catalytic Stove5.09 g/hr53 %147632 BTU/h—No
Central Boiler Inc.- WoodMaster Central Boiler Classic Edge 360 Non-Catalytic Stove2.1 g/hr82 %148625 BTU/h9.98 cu ftYes
Central Boiler Inc.- WoodMaster Central Boiler Classic Edge 560 Non-Catalytic Stove3.3 g/hr84 %194724 BTU/h13.76 cu ftNo
Central Boiler Inc.- WoodMaster Central Boiler Classic Edge 760 Non-Catalytic Stove3 g/hr83 %235938 BTU/h23.2 cu ftNo
Central Boiler Inc.- WoodMaster Central Boiler Classic Edge 960 Non-Catalytic Stove3.3 g/hr86 %378339 BTU/h32 cu ftYes
Central Boiler Inc.- WoodMaster Classic Edge 350 Non-Catalytic Stove3.6 g/hr79 %177802 BTU/h—No
Central Boiler Inc.- WoodMaster Classic Edge 550 Non-Catalytic Stove5 g/hr70 %162170 BTU/h—No
Central Boiler Inc.- WoodMaster Classic Edge 560.1 Non-Catalytic Stove—83 %171956 BTU/h13.72 cu ftYes
Central Boiler Inc.- WoodMaster Classic Edge 750 Non-Catalytic Stove4.6 g/hr72 %240362 BTU/h—No
Central Boiler Inc.- WoodMaster Classic Edge 760.1 Non-Catalytic Stove—83 %256550 BTU/h22.09 cu ftYes
Central Boiler Inc.- WoodMaster Classic Edge 865 Non-Catalytic Stove—83 %237755 BTU/h22.68 cu ftYes
Central Boiler Inc.- WoodMaster E-Classic 1450 Non-Catalytic Stove4.7 g/hr78 %214000 BTU/h—No
Central Boiler Inc.- WoodMaster E-Classic 3250 IR Non-Catalytic Stove3.81 g/hr69 %245000 BTU/h—No
Central Boiler Inc.- WoodMaster Maxim M255 PE Non-Catalytic Stove—89 %182504 BTU/h—Yes
Central Boiler Inc.- WoodMaster Maxim M255P/M255PE Non-Catalytic Stove0.8 g/hr82 %165215 BTU/h—No
DECTRA (GARN) GARN WHS-1000H Non-Catalytic Stove—77 %160000 BTU/h8.83 cu ftNo
DECTRA (GARN) GARN WHS-1000H and WHS1000V Non-Catalytic Stove—77 %160000 BTU/h—No
DECTRA (GARN) GARN WHS-1500H Non-Catalytic Stove2.88 g/hr65 %177000 BTU/h—No
DECTRA (GARN) GARN WHS-1500V —2.88 g/hr65 %177000 BTU/h—No
DECTRA (GARN) GARN WHS-2000H Non-Catalytic Stove1.69 g/hr74 %200000 BTU/h—No
DECTRA (GARN) GARN WHS-2000V Non-Catalytic Stove1.69 g/hr74 %200000 BTU/h—No
Earth Manufacturing Klear Sky 400 Non-Catalytic Stove5.1 g/hr47 %70770 BTU/h—No
Econoburn Boilers EBW 200-170 Non-Catalytic Stove—60 %171638 BTU/h—No
Effecta Energy Solutions Komplett III LIGHT 20 KW Non-Catalytic Stove—85 %68000 BTU/h—No
Effecta Energy Solutions Komplett III LIGHT 25 KW Non-Catalytic Stove—86 %85000 BTU/h—No
Effecta Energy Solutions Komplett III LIGHT 35 KW Non-Catalytic Stove—85 %120000 BTU/h—No
Effecta Energy Solutions Smart 40 Non-Catalytic Stove—75 %142600 BTU/h—No
Effecta Energy Solutions Smart 55 Non-Catalytic Stove—83 %183573 BTU/h—No
ESIM USV 100GS Non-Catalytic Stove7.55 g/hr61 %350367 BTU/h—No
Evoworld HP 14 Non-Catalytic Stove—88 %47800 BTU/h—No
Evoworld P 100 Non-Catalytic Stove—88 %360000 BTU/h—No
Evoworld P 200 Non-Catalytic Stove—86 %699000 BTU/h—No
Evoworld P28 Non-Catalytic Stove—85 %94200 BTU/h—No
Evoworld P50 Non-Catalytic Stove—90 %163000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H FHG 20/30 Non-Catalytic Stove—69 %70000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Pellet 60 Non-Catalytic Stove1.4 g/hr81 %212443 BTU/h—Yes
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 100 Non-Catalytic Stove—88 %341000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 15 Non-Catalytic Stove—87 %50800 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 20 Non-Catalytic Stove—87 %68200 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 32 Non-Catalytic Stove—87 %109000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 38 Non-Catalytic Stove—86 %130000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 48 Non-Catalytic Stove—86 %164000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 60 Non-Catalytic Stove—86 %200000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 8 Non-Catalytic Stove—88 %35800 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 80 Non-Catalytic Stove—87 %273000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H PE1 Pellet 20 Non-Catalytic Stove0.42 g/hr78 %67744 BTU/h—Yes
Fröling Heizkessel und Behälterbau Ges.m.b.H PE1 Pellet 35 Non-Catalytic Stove0.68 g/hr80 %121300 BTU/h—Yes
Fröling Heizkessel und Behälterbau Ges.m.b.H S3 Turbo 30 Non-Catalytic Stove—77 %99594 BTU/h4.45 cu ftYes
Fröling Heizkessel und Behälterbau Ges.m.b.H S3 Turbo 50 Non-Catalytic Stove—73 %83097 BTU/h6.78 cu ftYes
Fröling Heizkessel und Behälterbau Ges.m.b.H T4-130 Non-Catalytic Stove—85 %444000 BTU/h—No
Fröling Heizkessel und Behälterbau Ges.m.b.H T4-150 Non-Catalytic Stove—85 %512000 BTU/h—No
Greentech Manufacturing Crown Royal RS7200E Non-Catalytic Stove2.46 g/hr60 %184508 BTU/h—No
Greentech Manufacturing Crown Royal RS7300E Non-Catalytic Stove6.2 g/hr54 %189599 BTU/h—No
Greentech Manufacturing Crown Royal RS7400E Non-Catalytic Stove8 g/hr61 %296192 BTU/h—No
Greentech Manufacturing Crown Royal Stoves 7200E Non-Catalytic Stove—77 %123247 BTU/h6.11 cu ftYes
Greentech Manufacturing Crown Royal Stoves 7300E Non-Catalytic Stove1.8 g/hr75 %199057 BTU/h12.83 cu ftYes
Greentech Manufacturing Crown Royal Stoves 7400E Non-Catalytic Stove2.4 g/hr83 %310495 BTU/h18.44 cu ftNo
Hardy Manufacturing KB-125 Non-Catalytic Stove4.1 g/hr61 %119457 BTU/h—No
Hardy Manufacturing KB-165 Non-Catalytic Stove3.9 g/hr57 %150000 BTU/h—No
Hargassner GmbH ECO-HK 120 Multifuel Non-Catalytic Stove2.01 g/hr88 %416833 BTU/h—Yes
Hargassner GmbH ECO-HK 70 Multifuel Non-Catalytic Stove1.7 g/hr87 %250794 BTU/h—No
Hargassner GmbH NEO HV60 Non-Catalytic Stove—70 %213941 BTU/h7.48 cu ftYes
Hargassner GmbH SMART HV23 Non-Catalytic Stove—73 %78335 BTU/h3.53 cu ftYes
Hargassner GmbH Smart PK32 Non-Catalytic Stove0.42 g/hr87 %115000 BTU/h—Yes
Hawken Energy GX Series GX 10 Non-Catalytic Stove2.2 g/hr64 %144870 BTU/h—No
Hawken Energy GX Series GX15 Non-Catalytic Stove3.7 g/hr70 %176116 BTU/h—No
Hawken Energy GX Series GX30 Non-Catalytic Stove4.9 g/hr67 %242090 BTU/h—No
HeatMaster Furnaces G Series G10000 Non-Catalytic Stove0 g/hr88 %280451 BTU/h23.6 cu ftYes
HeatMaster Furnaces G Series G4000 Non-Catalytic Stove0 g/hr86 %99840 BTU/h8.5 cu ftYes
HeatMaster Furnaces G Series G7000 Non-Catalytic Stove0 g/hr81 %195502 BTU/h16.3 cu ftYes
Heatmaster Furnaces Inc. (SteelTech Inc.) G Series G10000 Non-Catalytic Stove—88 %280451 BTU/h23.6 cu ftNo
Heatmaster Furnaces Inc. (SteelTech Inc.) G Series G4000 Non-Catalytic Stove—86 %99840 BTU/h8.5 cu ftNo
Heatmaster Furnaces Inc. (SteelTech Inc.) G Series G7000 Non-Catalytic Stove—81 %195502 BTU/h16.3 cu ftNo
Heatmaster Furnaces Inc. (SteelTech Inc.) P7000 Non-Catalytic Stove—78 %255301 BTU/h—No
HeatMaster Furnaces P4000 Non-Catalytic Stove—82 %147388 BTU/h—Yes
HeatMaster Furnaces P7000 Non-Catalytic Stove0 g/hr78 %255301 BTU/h—Yes
Heatmor Manufacturing 200 SSP Non-Catalytic Stove—69 %180000 BTU/h—No
Heatmor Manufacturing 350X Non-Catalytic Stove9.2 g/hr58 %255582 BTU/h—No
Heatmor Manufacturing 400-4S Non-Catalytic Stove10.7 g/hr76 %400000 BTU/h—No
Heatmor Manufacturing X Series 200X Non-Catalytic Stove8.1 g/hr62 %184459 BTU/h—No
Heizomat Canada RHK AK 30 Non-Catalytic Stove—86 %142000 BTU/h—No
HIDU GmbH BioWIN 152 Non-Catalytic Stove0 g/hr65 %0 BTU/h—Yes
HIDU GmbH BioWIN 212 Non-Catalytic Stove0 g/hr58 %0 BTU/h—Yes
HIDU GmbH BioWIN 262 Non-Catalytic Stove—71 %88400 BTU/h—Yes
HIDU GmbH BioWIN 332 Non-Catalytic Stove0 g/hr71 %0 BTU/h—Yes
Hydronic Specialty Supply Drummer-35 Non-Catalytic Stove—60 %115000 BTU/h—No
LMF Manufacturing AHB-170P Non-Catalytic Stove—54 %77771 BTU/h—No
Mahoning Outdoor Furnace Mahoning Skye Series V Non-Catalytic Stove2.4 g/hr54 %110000 BTU/h—No
Maine Energy Systems EasyPell Non-Catalytic Stove—75 %68000 BTU/h—No
Maine Energy Systems EasyPell 16-20KW Non-Catalytic Stove—75 %68000 BTU/h—No
Maine Energy Systems PE/PES 12-20 Non-Catalytic Stove0.7 g/hr75 %67694 BTU/h—No
Maine Energy Systems PE/PES 36-56 Non-Catalytic Stove1.7 g/hr86 %199408 BTU/h—No
Maine Energy Systems PE16 Non-Catalytic Stove—86 %57000 BTU/h—No
Maine Energy Systems PE32 Non-Catalytic Stove—85 %109000 BTU/h—No
Maine Energy Systems PE64 Non-Catalytic Stove—87 %229000 BTU/h—No
Maine Energy Systems Pellematic 20 Non-Catalytic Stove0.23 g/hr77 %70418 BTU/h—Yes
Maine Energy Systems Pellematic 22 Non-Catalytic Stove0.44 g/hr82 %68300 BTU/h—Yes
Maine Energy Systems Pellematic 32 Non-Catalytic Stove0.32 g/hr77 %106996 BTU/h—Yes
Maine Energy Systems Pellematic 56 Non-Catalytic Stove0.9 g/hr86 %191203 BTU/h—No
Maine Energy Systems Pellematic 56 (2) Non-Catalytic Stove0 g/hr84 %191203 BTU/h—Yes
Maine Energy Systems Pellematic Smart XS (Condensing Mode) Non-Catalytic Stove—90 %64851 BTU/h—Yes
Maine Energy Systems PES 25-32 Non-Catalytic Stove0.8 g/hr81 %99797 BTU/h—No
Marway Welding Phase 2-200 Non-Catalytic Stove3.75 g/hr39 %139576 BTU/h—No
Nature's Comfort GT Series GT-6000 Non-Catalytic Stove5.7 g/hr73 %250000 BTU/h—No
NBE Production Kedel RTB 170 Non-Catalytic Stove1.76 g/hr79 %162000 BTU/h—No
NBE Production Kedel RTB102 Non-Catalytic Stove0.87 g/hr73 %87379 BTU/h—No
NBE Production Kedel RTB54 Non-Catalytic Stove0.68 g/hr70 %60000 BTU/h—No
NBE Production RTB102(TS) Non-Catalytic Stove—85 %86000 BTU/h—No
NBE Production RTB170(TS) Non-Catalytic Stove—86 %156000 BTU/h—No
NBE Production RTB54 (TS) Non-Catalytic Stove—85 %58000 BTU/h—No
Northwest Manufacturing Woodmaster CleanFire 400 Non-Catalytic Stove1.04 g/hr67 %102408 BTU/h—No
Northwest Manufacturing Woodmaster Mini Boiler Non-Catalytic Stove1.4 g/hr65 %101577 BTU/h—No
Northwest Manufacturing Woodmaster Ultra 30 Non-Catalytic Stove1.6 g/hr59 %102716 BTU/h—No
Pellergy, LLC/ Windhager Zentralheizung Technik GmbH Alpha-100 Non-Catalytic Stove—86 %88400 BTU/h—No
Pellergy, LLC/ Windhager Zentralheizung Technik GmbH Alpha-60 Non-Catalytic Stove—86 %51900 BTU/h—No
Piney Manufacturing ENVIRO CHIP-500 Non-Catalytic Stove5.4 g/hr73 %280000 BTU/h—No
Piney Manufacturing Optimizer 350 Non-Catalytic Stove7.3 g/hr65 %400000 BTU/h—No
Polar Furnace Manufacturing G Class G3 Non-Catalytic Stove—77 %182387 BTU/h12.7 cu ftNo
Polar Furnace Manufacturing G-Class G2Plus Non-Catalytic Stove1.34 g/hr81 %183307 BTU/h9.27 cu ftYes
Polar Furnace Manufacturing G2-G2 Non-Catalytic Stove3.53 g/hr67 %200000 BTU/h—No
Polar Furnace Manufacturing G3-G3 Non-Catalytic Stove1.96 g/hr72 %200000 BTU/h—No
Profab Industries Empire Elite 200/XT200 Non-Catalytic Stove5.96 g/hr61 %185983 BTU/h—No
Steel Tech G Series G100/G100s Non-Catalytic Stove1 g/hr68 %125000 BTU/h—No
Steel Tech G Series G200-2/G200s Non-Catalytic Stove1.7 g/hr75 %232000 BTU/h—No
Steel Tech G Series G400G400s Non-Catalytic Stove9 g/hr74 %350000 BTU/h—No
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H P4 Unit 25 Non-Catalytic Stove—87 %85300 BTU/h—No
Varmebaronen AB Vedolux 30 Non-Catalytic Stove—62 %109529 BTU/h—No
Varmebaronen AB Vedolux 350 Non-Catalytic Stove—74 %118724 BTU/h3.71 cu ftNo
Varmebaronen AB Vedolux 37 Non-Catalytic Stove—69 %132119 BTU/h3.46 cu ftNo
Varmebaronen AB Vedolux 450 Non-Catalytic Stove—75 %130731 BTU/h5.19 cu ftNo
Varmebaronen AB Vedolux 55 Non-Catalytic Stove—67 %170418 BTU/h5.3 cu ftNo
Varmebaronen AB Vedolux 650 Non-Catalytic Stove—73 %201743 BTU/h7.42 cu ftNo
Värmebaronen AB/Smokeless Heat Pellmax 200 UB Non-Catalytic Stove—85 %83100 BTU/h—No
Viessmann Holzheiztechnik GmbH Pyrot 150 Non-Catalytic Stove—85 %494000 BTU/h—No
Viessmann Holzheiztechnik GmbH Pyrot 540 Non-Catalytic Stove—88 %1700000 BTU/h—No
Viessmann Holzheiztechnik GmbH Pyrotec 390 Non-Catalytic Stove—86 %1430000 BTU/h—No
Viessmann Holzheiztechnik GmbH Pyrotec 530 Non-Catalytic Stove—87 %1860000 BTU/h—No
Viessmann Holzheiztechnik GmbH Pyrotec 720 Non-Catalytic Stove—85 %2470000 BTU/h—No
WEbiomass Woodpecker Non-Catalytic Stove3.3 g/hr72 %153000 BTU/h—No
Windhager Zentralheizung Technik GmbH BioWin 102 Non-Catalytic Stove—88 %36900 BTU/h—No
Windhager Zentralheizung Technik GmbH BioWin 152 Non-Catalytic Stove—87 %55000 BTU/h—No
Windhager Zentralheizung Technik GmbH BioWIN 152 (2) Non-Catalytic Stove—65 %51200 BTU/h—No
Windhager Zentralheizung Technik GmbH BioWIN 212 Non-Catalytic Stove—58 %71700 BTU/h—No
Windhager Zentralheizung Technik GmbH BioWin 262 Non-Catalytic Stove—87 %94500 BTU/h—No
Windhager Zentralheizung Technik GmbH BioWIN 262 (2) Non-Catalytic Stove—71 %88400 BTU/h—No
Windhager Zentralheizung Technik GmbH BioWIN 332 Non-Catalytic Stove—71 %110900 BTU/h—No
Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH BioWin 100 Non-Catalytic Stove—87 %34800 BTU/h—No
Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH BioWin 150 Non-Catalytic Stove—86 %51900 BTU/h—No
Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH BioWin 260 Non-Catalytic Stove—86 %88400 BTU/h—No
Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH BioWin 350 Non-Catalytic Stove—85 %119000 BTU/h—No
Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH BioWin 600 Non-Catalytic Stove—85 %202000 BTU/h—No
Wood Boiler USA Blaze HE Non-Catalytic Stove5.3 g/hr58 %166109 BTU/h—No
Wood Boiler USA Blaze HE (2) Non-Catalytic Stove—58 %166109 BTU/h—No
Wood Boiler USA E4 Non-Catalytic Stove4.5 g/hr61 %161455 BTU/h—No
Wood Boiler USA E4 (2) Non-Catalytic Stove—61 %161455 BTU/h—No
Wood Boiler USA Pellet Burner Easy 35 Non-Catalytic Stove—67 %429452 BTU/h—No
Wood Boiler USA Pellet Burner Easy 35 (2) Non-Catalytic Stove—67 %429452 BTU/h—No
WoodMaster CleanFire 300 (Central Boiler Classic Edge 360) Non-Catalytic Stove2.1 g/hr82 %148625 BTU/h9.98 cu ftNo
WoodMaster CleanFire 500 (Central Boiler Classic Edge 560) Non-Catalytic Stove3.3 g/hr84 %194724 BTU/h13.76 cu ftNo
WoodMaster CleanFire 700 (Central Boiler Classic Edge 760) Non-Catalytic Stove3 g/hr83 %235938 BTU/h23.2 cu ftNo