Vermont Certified Outdoor Wood Boilers

The following table lists OWBs certified by Vermont to meet a particulate emissions standard of 0.44 lb/mmBTU of heat input.  OWB models are listed from lowest to highest emissions to the atmosphere based on lb/mmBTU heat input.

After March 31, 2008, OWBs are not allowed to be sold in Vermont or for installation in Vermont unless Vermont has certified that the particular model has been tested and complies with this standard.

Manufacturer	Model	8-hr. heat Output Rating (BTU/hr)	Average Emission Rate (grams/hr)	Average Emission Rate (lb/mmBTU heat input)	Vermont Emission Limit (lb/mmBTU heat input)	Average Emission Rate (lbs/mmBTU heat output)
Greenwood Technologies	Aspen 175	66,290	8.4	0.18	0.44	0.27
Central Boiler	E-Classic 2300	160,001	6.4	0.20	0.44	0.31
Heatmor	200 SSR	71,923	20.3	0.35	0.44	0.76
Sequoyah Paradise	E3400	101,020	20.1	0.37	0.44	1.48
Greenwood Technologies	100	18,248	13.64	0.42	0.44	1.36
Alternative Fuel Boilers	EBW 150	27,441	14.1	0.43	0.44	0.80

Note: The emission rates in this table are annual averages, unless the unit was approved based on heating season emissions only.  Click on Manufacturer name above to view full certification letter.

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Vermont Department of Environmental Conservation
Air Pollution Control Division

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