Pellet hydronic heaters
EPA lists 86 hydronic-heater rows with certified fuel Wood Pellets, and 18 of those rows are currently certified.
This page uses that fuel field. It does not guess which hydronic heaters can burn pellets.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
Currently certified
| Model line | EPA manufacturer | Status | Emission (lb/mmBTU) | HHV efficiency | Heat output | Firebox | Fuel |
|---|---|---|---|---|---|---|---|
| Pellematic 20 | Maine Energy Systems, LLC | Currently certified | 0.02 | 77% | 9,323–70,418 BTU/hr | Not applicable | Wood Pellets |
| Pellematic 32 | Maine Energy Systems, LLC | Currently certified | 0.02 | 77% | 14,771–106,996 BTU/hr | Not applicable | Wood Pellets |
| Maxim M255 PE | Central Boiler Inc.- WoodMaster Inc. | Currently certified | 0.03 | 89% | 27,846–182,504 BTU/hr | Not applicable | Wood Pellets |
| BioWIN 152 | HIDU GmbH | Currently certified | 0.04 | 65% | 0 BTU/hr | Not applicable | Wood Pellets |
| BioWIN 262 | HIDU GmbH | Currently certified | 0.04 | 71% | 88,400 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWIN 332 | HIDU GmbH | Currently certified | 0.04 | 71% | 0 BTU/hr | Not applicable | Wood Pellets |
| ECO-HK 120 Multifuel | Hargassner GmbH | Currently certified | 0.04 | 88% | 53,054–416,833 BTU/hr | Not applicable | Wood Pellets |
| Pellematic 56 | Maine Energy Systems, LLC | Currently certified | 0.04 | 84% | 28,020–191,203 BTU/hr | Not applicable | Wood Pellets |
| P4000 | HeatMaster Furnaces, Inc. | Currently certified | 0.05 | 82% | 17,944–147,388 BTU/hr | Not applicable | Wood Pellets |
| PE1 Pellet 20 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Currently certified | 0.05 | 78% | 9,656–67,744 BTU/hr | Not applicable | Wood Pellets |
| PE1 Pellet 35 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Currently certified | 0.05 | 80% | 17,255–121,300 BTU/hr | Not applicable | Wood Pellets |
| Pellematic 22 | Maine Energy Systems, LLC | Currently certified | 0.05 | 82% | 68,300 BTU/hr maximum | Not applicable | Wood Pellets |
| Pellematic Smart XS (Condensing Mode) | Maine Energy Systems, LLC | Currently certified | 0.05 | 90% | 20,357–64,851 BTU/hr | Not applicable | Wood Pellets |
| Smart PK32, Nano PK32 | Hargassner GmbH | Currently certified | 0.05 | 87% | 115,000 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWIN 212 | HIDU GmbH | Currently certified | 0.06 | 58% | 0 BTU/hr | Not applicable | Wood Pellets |
| P4 Pellet 60 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Currently certified | 0.07 | 81% | 31,808–212,443 BTU/hr | Not applicable | Wood Pellets |
| P7000 | HeatMaster Furnaces, Inc. | Currently certified | 0.07 | 78% | 20,162–255,301 BTU/hr | Not applicable | Wood Pellets |
| BIO200 | Greentech Manufacturing Inc. | Currently certified | 0.08 | 89% | 94,396–772,085 BTU/hr | Not applicable | Wood Pellets |
Previously certified
| Model line | EPA manufacturer | Status | Emission (lb/mmBTU) | HHV efficiency | Heat output | Firebox | Fuel |
|---|---|---|---|---|---|---|---|
| Alpha-100 | Pellergy, LLC/ Windhager Zentralheizung Technik GmbH | Previously certified | 0.01 | 86% | 88,400 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWin 260 | Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH | Previously certified | 0.01 | 86% | 88,400 BTU/hr maximum | Not applicable | Wood Pellets |
| CP 1700 | Advanced Climate Technologies, LLC | Previously certified | 0.01 | 89% | 1,650,000 BTU/hr maximum | Not applicable | Wood Pellets |
| EasyPell 16-20KW | Maine Energy Systems, LLC | Previously certified | 0.01 | 75% | 68,000 BTU/hr maximum | Not applicable | Wood Pellets |
| HP 14 | Evoworld, Inc. | Previously certified | 0.01 | 88% | 47,800 BTU/hr maximum | Not applicable | Wood Pellets |
| P50 | Evoworld, Inc. | Previously certified | 0.01 | 90% | 163,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Pyrot 150 | Viessmann Holzheiztechnik GmbH | Previously certified | 0.01 | 85% | 494,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Alpha-60 | Pellergy, LLC/ Windhager Zentralheizung Technik GmbH | Previously certified | 0.02 | 86% | 51,900 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWin 100 | Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH | Previously certified | 0.02 | 87% | 34,800 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWin 102 | Windhager Zentralheizung Technik GmbH | Previously certified | 0.02 | 88% | 36,900 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWin 150 | Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH | Previously certified | 0.02 | 86% | 51,900 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWin 152 | Windhager Zentralheizung Technik GmbH | Previously certified | 0.02 | 87% | 55,000 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWin 262 | Windhager Zentralheizung Technik GmbH | Previously certified | 0.02 | 87% | 94,500 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWin 350 | Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH | Previously certified | 0.02 | 85% | 119,000 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWin 600 | Windhager, North America, LLC/ Windhager Zentralheizung Technik GmbH | Previously certified | 0.02 | 85% | 202,000 BTU/hr maximum | Not applicable | Wood Pellets |
| CP 850 | Advanced Climate Technologies, LLC | Previously certified | 0.02 | 88% | 840,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Komplett III LIGHT 20 KW | Effecta Energy Solutions | Previously certified | 0.02 | 85% | 68,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Komplett III LIGHT 25 KW | Effecta Energy Solutions | Previously certified | 0.02 | 86% | 85,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Komplett III LIGHT 35 KW | Effecta Energy Solutions | Previously certified | 0.02 | 85% | 120,000 BTU/hr maximum | Not applicable | Wood Pellets |
| P 100 | Evoworld, Inc. | Previously certified | 0.02 | 88% | 360,000 BTU/hr maximum | Not applicable | Wood Pellets |
| P 200 | Evoworld, Inc. | Previously certified | 0.02 | 86% | 699,000 BTU/hr maximum | Not applicable | Wood Pellets |
| P28 | Evoworld, Inc. | Previously certified | 0.02 | 85% | 94,200 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 38 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.02 | 86% | 130,000 BTU/hr maximum | Not applicable | Wood Pellets |
| PE16 | Maine Energy Systems, LLC | Previously certified | 0.02 | 86% | 57,000 BTU/hr maximum | Not applicable | Wood Pellets |
| PE32 | Maine Energy Systems, LLC | Previously certified | 0.02 | 85% | 109,000 BTU/hr maximum | Not applicable | Wood Pellets |
| PE64 | Maine Energy Systems, LLC | Previously certified | 0.02 | 87% | 229,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Pyrot 540 | Viessmann Holzheiztechnik GmbH | Previously certified | 0.02 | 88% | 1,700,000 BTU/hr maximum | Not applicable | Wood Pellets |
| T4-130 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.02 | 85% | 444,000 BTU/hr maximum | Not applicable | Wood Pellets |
| T4-150 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.02 | 85% | 512,000 BTU/hr maximum | Not applicable | Wood Pellets |
| CP 1000 | Advanced Climate Technologies, LLC | Previously certified | 0.03 | 87% | 1,030,000 BTU/hr maximum | Not applicable | Wood Pellets |
| CP 500 | Advanced Climate Technologies, LLC | Previously certified | 0.03 | 88% | 532,000 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 100 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.03 | 88% | 341,000 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 15 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.03 | 87% | 50,800 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 20 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.03 | 87% | 68,200 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 25 | Tarm USA, Inc./ Fröling Heizkessel- und Behälterbau Ges.m.b.H | Previously certified | 0.03 | 87% | 85,300 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 32 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.03 | 87% | 109,000 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 48 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.03 | 86% | 164,000 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 60 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.03 | 86% | 200,000 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 80 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.03 | 87% | 273,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Pellmax 200 UB | Värmebaronen AB/Smokeless Heat, LLC | Previously certified | 0.03 | 85% | 83,100 BTU/hr maximum | Not applicable | Wood Pellets |
| RTB54 (TS) | NBE Production | Previously certified | 0.03 | 85% | 58,000 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWIN 152 | Windhager Zentralheizung Technik GmbH | Previously certified | 0.04 | 65% | 51,200 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWIN 262 | Windhager Zentralheizung Technik GmbH | Previously certified | 0.04 | 71% | 88,400 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWIN 332 | Windhager Zentralheizung Technik GmbH | Previously certified | 0.04 | 71% | 110,900 BTU/hr maximum | Not applicable | Wood Pellets |
| Maxim M255P/M255PE | Central Boiler Inc.- WoodMaster Inc. | Previously certified | 0.04 | 82% | 165,215 BTU/hr maximum | Not applicable | Wood Pellets |
| P4 Unit 8 | Fröling Heizkessel und Behälterbau Ges.m.b.H | Previously certified | 0.04 | 88% | 35,800 BTU/hr maximum | Not applicable | Wood Pellets |
| Pyrotec 390 | Viessmann Holzheiztechnik GmbH | Previously certified | 0.04 | 86% | 1,430,000 BTU/hr maximum | Not applicable | Wood Pellets |
| RHK AK 30 | Heizomat Canada, Inc. | Previously certified | 0.04 | 86% | 142,000 BTU/hr maximum | Not applicable | Wood Pellets |
| RTB102(TS) | NBE Production | Previously certified | 0.04 | 85% | 86,000 BTU/hr maximum | Not applicable | Wood Pellets |
| RTB170(TS) | NBE Production | Previously certified | 0.04 | 86% | 156,000 BTU/hr maximum | Not applicable | Wood Pellets |
| BioWIN 212 | Windhager Zentralheizung Technik GmbH | Previously certified | 0.06 | 58% | 71,700 BTU/hr maximum | Not applicable | Wood Pellets |
| PES 25-32 | Maine Energy Systems, LLC | Previously certified | 0.06 | 81% | 99,797 BTU/hr maximum | Not applicable | Wood Pellets |
| Pyrotec 530 | Viessmann Holzheiztechnik GmbH | Previously certified | 0.06 | 87% | 1,860,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Pyrotec 720 | Viessmann Holzheiztechnik GmbH | Previously certified | 0.06 | 85% | 2,470,000 BTU/hr maximum | Not applicable | Wood Pellets |
| ECO-HK 70 Multifuel | Hargassner GmbH | Previously certified | 0.07 | 87% | 35,228–250,794 BTU/hr | Not applicable | Wood Pellets |
| Kedel RTB102 | NBE Production | Previously certified | 0.07 | 73% | 87,379 BTU/hr maximum | Not applicable | Wood Pellets |
| P7000 | Heatmaster Furnaces Inc. (SteelTech Inc.) | Previously certified | 0.07 | 78% | 20,162–255,301 BTU/hr | Not applicable | Wood Pellets |
| PE/PES 12-20 | Maine Energy Systems, LLC | Previously certified | 0.07 | 75% | 67,694 BTU/hr maximum | Not applicable | Wood Pellets |
| PE/PES 36-56 | Maine Energy Systems, LLC | Previously certified | 0.07 | 86% | 199,408 BTU/hr maximum | Not applicable | Wood Pellets |
| Kedel RTB 170 | NBE Production | Previously certified | 0.08 | 79% | 162,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Kedel RTB54 | NBE Production | Previously certified | 0.08 | 70% | 60,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Woodmaster Ultra 30 | Northwest Manufacturing Inc | Previously certified | 0.09 | 59% | 102,716 BTU/hr maximum | Not applicable | Wood Pellets |
| EasyPell | Maine Energy Systems, LLC | Previously certified | 0.1 | 75% | 68,000 BTU/hr maximum | Not applicable | Wood Pellets |
| Woodmaster Mini Boiler | Northwest Manufacturing Inc | Previously certified | 0.11 | 65% | 101,577 BTU/hr maximum | Not applicable | Wood Pellets |
| Woodpecker | WEbiomass, Inc. | Previously certified | 0.19 | 72% | 153,000 BTU/hr maximum | Not applicable | Wood Pellets |
| AHB-170P | LMF Manufacturing Ltd. | Previously certified | 0.99 | 54% | 77,771 BTU/hr maximum | Not applicable | Wood Pellets |
Cordwood hydronic heaters are on the hydronic list. Room pellet stoves are on pellet stoves.