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List of Cleaner Hydronic Heaters

Breathe Easier with Cleaner Outdoor Wood-Fired Heaters (PDF) (1pg, 451k, About PDF)

Below are 3 lists of cleaner burning hydronic heaters that qualify for the EPA voluntary program. The first table is for models that qualify for the Phase 2 white tag (about 90 percent cleaner than unqualified models). The second table is for models that qualify for the Phase 1 orange tag for "year round" use (about 70 percent cleaner than unqualified models). Please note that although the tag is calculated for year round use, some jurisdictions may not allow "year round" use (i.e., not during summer for just hot water rather than heat). The third table is for models that qualify for the Phase 1 orange tag for "heating season use only." These emissions are calculated as if the model is only used during the heating season. Please note that some jurisdictions do not allow models that only qualify for "heating season use only" because their emissions would be greater if they are used year round. 

Please Note that some States and/or local jurisdictions do not allow models that only qualify for "Heating Season Only" use.  Also, please note that all data below are according to EPA Method 28 OWHH unless otherwise noted.  One manufacturer has asked to use the "cordwood exception" to use the ASTM cordwood test method in lieu of the EPA method.  Labels based on the "cordwood exception" expire 12/31/08.

Phase 2 White Tag Models

Manufacturer Model Name & Number Heat Output Rating (1) Efficiency (1) Annual Average Emission Rate Heat Input (2)
Annual Average Emission Level		 Heat Output Annual Average Emission Level Highest Individual Test Run
Central Boiler Maxim M250 212,453 BTU/hr

87.8 % high heating value

95.54 % low heating value

1.6 grams/hr

0.07 grams/hr/10,000 BTU output

 0.05 lbs/million BTU input

0.06 lbs/million BTU output

 4.9 grams/hr
Central Boiler E - Classic 2300 160,001 BTU/hr

74.94 % high heating value

85.74 % low heating value

6.4 grams/hr

0.06 grams/hr/10,000 BTU heat output

 0.20 lbs/million BTU input

0.31 lbs/million BTU output

 17.6 grams/hr
Pro-Fab Industries Inc. Empyre Pro Series 200 66,290 BTU/hr

67.5% high heating value

77. 2% low heating value

8.4 grams/hr

0.18 grams/hr/10,000 BTU heat output

 0.18 lbs/million BTU input

0.27 lbs/million BTU output

 18.0 grams/hr
Hardy Manufacturing Co., Inc. KBP 270 120,000 BTU/hr

72.3% high heating value

77.9% low heating value

2.96 grams/hr

0.23 grams/hr/10,000 BTU output

 0.10 lbs/million BTU input

0.20 lbs/milion BTU output

 6.03 grams/hr
Northwest Manufacturing, Inc. (Woodmaster) AFS 900 107,069 BTU/hr

 

2.49 grams/hr

0.27 grams/hr/10,000 BTU output

 0.11 lbs/million BTU input

0.20 lbs/million BTU output

 7.38 grams/hr
Silverwinds Metals (Wood Doctor) WD-HE8000 112,655 BTU/hr

66.3 % high heating value

75.8 % low heating value

6.1 grams/hr

0.09 grams/hr/10,000 BTU output

 0.17 lbs/million BTU input

0.26 lbs/million BTU output

 17.4 grams/hr

1 - Based on 8-hour test for stick wood models and 4-hour test for continuous feed models.
2 - EPA Phase 2 qualified level is 0.32 pounds of fine particles per million BTU of heat output (weighted average representing the range of burn rates expected in a year) and a maximum individual test run of 18.0 grams per hour. Typically, the maximum individual test run is the maximum heat output burn rate.

 

Phase 1 Orange Tag "Year Round" Models

Manufacturer Model Name & Number Heat Output Rating (1) Annual Average Emission Rate Heat Input (2)
Annual Average Emission Level		 Heat Output Annual Average Emission Level Highest Individual Test Run
Pro-Fab Industries Inc. Empyre Pro Series 200 66,290 BTU/hr

8.40 grams/hr

0.18 grams/hr/10,000 BTU heat output

 0.182 lbs/million BTU heat input

0.27 lbs/million BTU heat output

 18.023 grams/hr
Central Boiler E - Classic 2300 160,001 BTU/hr

6.4 grams/hr

0.06 grams/hr/10,000 BTU heat output

 0.20 lbs/million BTU heat input

0.31 lbs/million BTU heat output

 17.60 grams/hr
Wood Doctor Converter 87,858 BTU/hr

20.3 grams/hr

0.33 grams/hr/10,000 BTU heat output

 0.30 lbs/million BTU heat input

0.66 lbs/million BTU heat output

 41.5 grams/hr
Central Boiler E - Classic 1200 89,613 BTU/hr

7.5 grams/hr

0.15 grams/hr/10,000 BTU heat output

 0.33 lbs/million BTU heat input

0.59 lbs/million BTU heat output

 19.94 grams/hr
Heatmor 200 SSR 71,923 BTU/hr

20.3 grams/hr

0.42 grams/hr/10,000 BTU heat output

 0.35 lbs/million BTU heat input

0.76 lbs/million BTU heat output

 33.4 grams/hr
Heatmor SSR 400 157,784 BTU/hr

31.3 grams/hr

0.29 grams/hr/10,000 BTU heat output

 0.41 lbs/million BTU heat input

0.68 lbs/million BTU heat output

 30.6 grams/hr
Bioheat Resources BH500
Eco Energy		 73,067 BTU/hr

19.07 grams/hr

0.323 grams/hr/10,000 BTU heat output

 0.402 lbs/million BTU heat input

0.77 lbs/million BTU heat output

 71.602 grams/hr
Sequoyah Paradise E3400 101,020 BTU/hr

21.88 grams/hr

0.42 grams/hr/10,000 BTU heat output

 0.488 lbs/million BTU heat input

2.37 lbs/million BTU heat output

 34.77 grams/hr
Hardy KB175 66,681 BTU/hr

16.3 grams/hr

0.31 grams/hr/10,000 BTU heat output

 0.54 lbs/million BTU heat input

0.87 lbs/million BTU heat output

 42.7 grams/hr

1 - Based on 8-hour test for stick wood models and 4-hour test for continuous feed models.
2 - EPA Phase 1 level is 0.60 lbs/million BTU.  Emission levels are annual averages unless qualified for heating season use only.

 

Phase 1 Orange Tag "Heating Season Only" Models

Manufacturer Model Name & Number Heat Output Rating (1) Heating Season Average Emission Rate Heat Input (2)
Heating Season Average Emission Level		 Heat Output
Heating Season Average Emission Level		 Highest Individual Test Run
Pro-Fab Industries Inc. Empyre Pro Series 200 66,290 BTU/hr

11.58 grams/hr

0.25 grams/hr/10,000 BTU heat output

 0.186 lbs/million BTU heat input

0.28 lbs/million BTU heat output

 18.023 grams/hr
Central Boiler E - Classic 2300 160,001 BTU/hr

8.6 grams/hr

0.08 grams/hr/10,000 BTU heat output

 0.21 lbs/million BTU heat input

0.32 lbs/million BTU heat output

 17.60 grams/hr
Wood Doctor Converter 87,858 BTU/hr

26.8 grams/hr

0.43 grams/hr/10,000 BTU heat output

 0.30 lbs/million BTU heat input

0.65 lbs/million BTU heat output

 41.5 grams/hr
Central Boiler E - Classic 1200 89,613 BTU/hr

9.1 grams/hr

0.17 grams/hr/10,000 BTU heat output

 0.31 lbs/million BTU heat input

0.51 lbs/million BTU heat output

 19.94 grams/hr
Sequoyah Paradise E3400 101,020 BTU/hr

20.10 grams/hr

0.31 grams/hr/10,000 BTU heat output

 0.37 lbs/million BTU heat input

1.48 lbs/million BTU heat output

 34.77 grams/hr
Alternative Fuel Boilers EBW150 27,441 BTU/hr

14.14 grams/hr

0.576 grams/hr/10,000 BTU heat output

 0.434 lbs/million BTU heat input

0.80 lbs/million BTU heat output

 24.05 grams/hr
Bioheat Resources BH500
Eco Energy		 73,067 BTU/hr

28.54 grams/hr

0.478 grams/hr/10,000 BTU heat output

 0.479 lbs/million BTU heat input

0.90 lbs/million BTU heat output

 71.602 grams/hr
Aqua-Therm Omega 100 63,807 BTU/hr

23.80 grams/hr

0.515 grams/hr/10,000 BTU heat output

 0.551 lbs/million BTU heat input

1.17 lbs/million BTU heat output

 26.988 grams/hr

1 - Based on 8-hour test for stick wood models and 4-hour test for continuous feed models.
2 - EPA Phase 1 level is 0.60 lbs/million BTU.  Emission levels are annual averages unless qualified for heating season use only.

 

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