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List of Cleaner Hydronic Heaters

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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
Fuel Type
Central Boiler
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Maxim
M250
212,453 BTU/hr

87.8 %
high
heating
value

95.5 %
low
heating
value

1.6 grams/hr

0.07 grams/hr/ 10,000 BTU
heat output

0.05
lbs/million
BTU input

0.06
lbs/million BTU output

4.9
grams/hr
wood pellets; continuous feed
Heatmor
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200 SSR II 66,842 BTU/hr

87.1 %
high
heating
value

99.9 %
low
heating
value

3.7 grams/hr

0.07 grams/hr/
10,000 BTU
heat output

0.16
lbs/million
BTU input

0.18
lbs/million
BTU output

11.9
grams/hr
stick wood; batch load
HeatSource1
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Earth
Energy
Series
190
87,577 BTU/hr

64.8 %
high
heating
value

74.4 %
low
heating
value

3.56 grams/hr

0.06 grams/hr/ 10,000 BTU
heat output

0.11
lbs/million
BTU input

0.19
lbs/million BTU output

10.7
grams/hr
stick wood; batch load
Hardy Manufacturing Co., Inc.
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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
heat output

0.10
lbs/million
BTU input

0.20
lbs/million BTU output

6.03
grams/hr
wood pellets; continuous feed
Northwest Manufacturing, Inc. (Woodmaster)
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AFS
900
107,069 BTU/hr

 

2.49 grams/hr

0.27 grams/hr/ 10,000 BTU
heat output

0.11
lbs/million
BTU input

0.20
lbs/million BTU output

7.38
grams/hr
wood pellets; continuous feed
Silverwinds Metals
(Wood Doctor)
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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
heat output

0.17
lbs/million
BTU input

0.26
lbs/million BTU output

17.4
grams/hr
stick wood; batch load
Pro-Fab Industries Inc.
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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
stick wood; batch load
Central Boiler
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E -
Classic
1400
107,459 BTU/hr

73.7 %
high
heating
value

84.2 %
low
heating
value

5.5 grams/hr

0.08 grams/hr/ 10,000 BTU
heat output

0.19
lbs/million
BTU input

0.27
lbs/million BTU output

8.5
grams/hr
stick wood; batch load
Central Boiler
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E -
Classic
2300
160,001 BTU/hr

74.9 %
high
heating
value

85.7 %
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
stick wood; batch load
Pro-Fab Industries Inc.
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Empyre
Pro
Series
400
177,333 BTU/hr

78.9 %
high
heating
value

90.2 %
low
heating
value

6.1 grams/hr

0.06 grams/hr/ 10,000 BTU
heat output

0.20
lbs/million
BTU input

0.31
lbs/million BTU output

13.6
grams/hr
stick wood; batch load

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.
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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
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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
Sequoyah Paradise
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E3300B 109,528
BTU/hr

8.1 grams/hr

0.13 grams/hr/
10,000 BTU
heat output

0.28
lbs/million BTU
heat input

0.56
lbs/million BTU
heat output

19.1
grams/hr
Wood Doctor
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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
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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
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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
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400 SSR 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

47.6
grams/hr
Bioheat Resources
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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
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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
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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.
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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

Sequoyah Paradise
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E3300B 109,528
BTU/hr

8.5 grams/hr

0.13 grams/hr/
10,000 BTU
heat output

0.20
lbs/million BTU
heat input

0.39
lbs/million BTU
heat output

19.1
grams/hr
Central Boiler
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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
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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
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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
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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
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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
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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
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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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