List of Qualified Hydronic Heaters
The Voluntary Hydronic Heater Program was terminated on May 15, 2015. The information on qualified heaters is for historical purposes only. See the list of current EPA-certified hydronic heaters.
Below is the Phase 2 list of cleaner burning hydronic heaters that qualify for EPA's Hydronic Heater program. Phase 2 units have a white tag and are about 90 percent cleaner than unqualified units. EPA's Phase 1 models are no longer considered qualified under the Program after March 31, 2010. Use of permanent labels and hang tags for these models must be discontinued on units manufactured after that date (Phase 1 archive).
EPA Phase 2 qualified level is 0.32 pounds of fine particles per million BTU of heat output using a weighted average representing the range of burn rates expected in a year and a maximum individual test run of 18.0 grams per hour. Ratings and emissions are output based.
Note: The hydronic heaters that are qualified under EPA's Voluntary Hydronic Heater Program are not certified per EPA's Wood Heater New Source Performance Standard. Contact your state or local air quality agency for clarification on the type of wood-burning appliances, if any, that may legally be installed in your area.
Continuous feed pellet models report maximum output rating only. Annual average efficiency is only reported for models tested with EPA's revised M28 WHH. Annual Average Efficiency (Higher Heating Value) means that this efficiency was calculated using the higher heating value of fuel = 8600 Btu/lb.
Manufacturer | Model Name | Model Number | Fuel | Annual Avg. Emission Rate (lb/mmBtu) | Max Heat Output Rating (Btu/hr) | 8-hour Output Rating (BTU/hr) | Annual Average Efficiency (%HHV) | Annual Avg. Emission Rate (gr/hr) | Thermal Storage Required |
---|---|---|---|---|---|---|---|---|---|
Alternate Heating Systems | Wood Gun | E155 | cord wood | 0.32 | 147632 | 53% | 5.09 | ||
Central Boiler | E-Classic | 1450 | cord wood | 0.18 | 214000 | 120529 | 78% | 4.70 | |
Central Boiler | E-Classic | 3250 IR | cord wood | 0.18 | 226196 | 244174 | 69% | 3.80 | |
Central Boiler | Classic Edge | 350 | cord wood | 0.18 | 177802 | 67702 | 79% | 3.60 | |
Central Boiler | Classic Edge | 550 | cord wood | 0.31 | 162170 | 81168 | 70% | 5.20 | |
DECTRA | GARN | WHS-2000H | cord wood | 0.07 | 200000 | 105050 | 74% | 1.70 | x |
DECTRA | GARN | WHS-2000V | cord wood | 0.07 | 200000 | 105050 | 74% | 1.70 | x |
DECTRA | GARN | WHS-1500H | cord wood | 0.14 | 177000 | 87179 | 65% | 0.14 | x |
DECTRA | GARN | WHS-1500V | cord wood | 0.14 | 177000 | 87179 | 65% | 0.14 | x |
Earth Manufacturing, LLC | Klear Sky | 400 | cord wood | 0.3 | 70770 | 45786 | 47% | 5.10 | |
Econoburn Boilers | EBW | 200-170 | cord wood | 0.16 | 171638 | 60% | x | ||
ESIM | USV | 100GS | cord wood | 0.20 | 350367 | 61% | 7.55 | ||
Greentech Manufacturing Inc. | Crown Royal | RS7400E | cord wood | 0.24 | 296192 | 116597 | 61% | 8.00 | |
Greentech Manufacturing Inc. | Crown Royal | RS7300E | cord wood | 0.29 | 189599 | 60612 | 54% | 6.20 | |
Hardy Manufacturing Co., Inc. | KB | 125 | cord wood | 0.3 | 119457 | 60261 | 61% | 4.10 | |
Hardy Manufacturing Co., Inc. | KB | 165 | cord wood | 0.31 | 150000 | 73573 | 57% | 3.90 | |
Hawken Energy | GX Series | GX 10 | cord wood | 0.14 | 144870 | 76887 | 64% | 2.20 | |
Hawken Energy | GX Series | GX15 | cord wood | 0.18 | 176116 | 73234 | 70% | 3.70 | |
Hawken Energy | GX Series | GX30 | cord wood | 0.17 | 242090 | 104865 | 67% | 4.90 | |
Steel Tech, Inc. | G Series | G200-2 | cord wood | 0.07 | 232000 | 111315 | 75% | 1.70 | |
Steel Tech, Inc. | G Series | G100 | cord wood | 0.07 | 125000 | 68% | 1.00 | ||
Steel Tech, Inc. | G Series | G400 | cord wood | 0.23 | 350000 | 180409 | 74 | 9.00 | |
Heatmor | 400-4S | 400-4S | cord wood | 0.28 | 400000 | 160599 | 76% | 10.70 | |
Heatmor | X Series | 200X | cord wood | 0.3 | 184459 | 54019 | 62% | 8.10 | |
Heatmor | 350X | cord wood | 0.31 | 255582 | 89753 | 58% | 9.20 | ||
Hydronic Specialty Supply, Inc. | Drummer | Drummer 35 | cord wood | 0.32 | 115000 | 60% | x | ||
Mahoning Outdoor Furnace | Mahoning Skye Series V | V | cord wood | 0.18 | 110000 | 82594 | 54% | 2.40 | |
Maine Energy Systems, LLC | PE16 | pellets | 0.02 | 57000 | 57000 | 86% | x | ||
Maine Energy Systems, LLC | PE32 | pellets | 0.02 | 109000 | 109000 | 85% | x | ||
Maine Energy Systems, LLC | PE64 | pellets | 0.02 | 229000 | 229000 | 87% | x | ||
Maine Energy Systems, LLC | PE/PES | 12-20 | pellets | 0.07 | 67694 | 75% | 0.70 | ||
Maine Energy Systems, LLC | PES | 25-32 | pellets | 0.06 | 99797 | 81% | 0.80 | ||
Maine Energy Systems, LLC | PE/PES | 36-56 | pellets | 0.07 | 199408 | 86% | 1.70 | ||
Marway Welding | Phase | 2-200 | cord wood | 0.26 | 139576 | 65336 | 39% | 3.75 | |
Nature's Comfort LLC | GT Series | GT-6000 | cord wood | 0.22 | 250000 | 100959 | 73% | 5.70 | |
NBE Production | Kedel | RTB54 | pellets | 0.08 | 60000 | 70% | 0.68 | ||
NBE Production | Kedel | RTB102 | pellets | 0.07 | 87379 | 73% | 0.87 | ||
NBE Production | Kedel | RTB170 | pellets | 0.08 | 162000 | 79% | 1.76 | ||
NBE Production | Kedel | RTB54 | pellets | 0.03 | 58000 | 58000 | 85% | x | |
NBE Production | Kedel | RTB102 | pellets | 0.04 | 86000 | 86000 | 85% | x | |
NBE Production | Kedel | RTB170 | pellets | 0.04 | 156000 | 156000 | 86% | x | |
Pellergy, LLC/Windhager Zentralheizung Technik GmbH | Alpha-60 | pellets | 0.02 | 51900 | 51900 | 86% | x | ||
Pellergy, LLC/Windhager Zentralheizung Technik GmbH | Alpha-100 | pellets | 0.01 | 88400 | 88400 | 86% | x | ||
Piney Manufacturing | Optimizer | 350 | cord wood | 0.30 | 400000 | 160421 | 65% | 7.30 | |
Piney Manufacturing | Enviro Chip | 500 | cord wood | 0.19 | 280000 | 73% | 5.40 | ||
Polar Furnace Manufacturing Inc. | G3 | G3 | cord wood | 0.08 | 200000 | 142533 | 72% | 1.96 | |
Polar Furnace Manufacturing Inc. | G2 | G2 | cord wood | 0.19 | 200000 | 66897 | 67% | 3.53 | |
Profab Industries | Empire Elite | 200/XT200 | cord wood | 0.31 | 185983 | 64047 | 61% | 5.96 | |
Smokeless Heat, LLC/Värmebaronen AB | Pellmax UB | pellets | 0.03 | 83100 | 83100 | 85% | x | ||
Tarm USA, Inc. | FHG | 20/30 | cord wood | 0.18 | 70000 | 69% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 8 | pellets | 0.04 | 35800 | 35800 | 88% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 15 | pellets | 0.03 | 50800 | 50800 | 87% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 20 | pellets | 0.03 | 68200 | 68200 | 87% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 25 | pellets | 0.03 | 85300 | 85300 | 87% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 32 | pellets | 0.03 | 109000 | 109000 | 87% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 38 | pellets | 0.02 | 130000 | 130000 | 86% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 48 | pellets | 0.03 | 164000 | 164000 | 86% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 60 | pellets | 0.03 | 200000 | 200000 | 86% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 80 | pellets | 0.03 | 273000 | 273000 | 87% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | P4 Unit 100 | pellets | 0.03 | 341000 | 341000 | 88% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | T4-130 | pellets | 0.02 | 444000 | 444000 | 85% | x | ||
Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | T4-150 | pellets | 0.02 | 512000 | 512000 | 85% | x | ||
WEbiomass, Inc. | Woodpecker | pellets | 0.19 | 153000 | 72% | 3.30 | |||
Windhager, North America, LLC/Windhager Zentralheizung Technik GmbH | BioWin 100 | pellets | 0.02 | 34800 | 34800 | 87% | x | ||
Windhager, North America, LLC/Windhager Zentralheizung Technik GmbH | BioWin 150 | pellets | 0.02 | 51900 | 51900 | 86% | x | ||
Windhager, North America, LLC/Windhager Zentralheizung Technik GmbH | BioWin 260 | pellets | 0.01 | 88400 | 88400 | 86% | x | ||
Windhager, North America, LLC/Windhager Zentralheizung Technik GmbH | BioWin 350 | pellets | 0.02 | 119000 | 119000 | 85% | x | ||
Windhager, North America, LLC/Windhager Zentralheizung Technik GmbH | BioWin 600 | pellets | 0.02 | 202000 | 202000 | 85% | x | ||
Wood Boiler USA | E4 | cord wood | 0.25 | 161455 | 77308 | 61% | 4.50 | ||
Wood Boiler USA | Blaze HE | cord wood | 0.27 | 166109 | 60000 | 58% | 5.30 | ||
Woodmaster | Ultra 30 | pellets | 0.09 | 102716 | 102716 | 59% | 1.60 | ||
Woodmaster | Mini Boiler | pellets | 0.11 | 101577 | 101577 | 65% | 1.40 |