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New Hampshire Department of Environmental Services

Wood Smoke and Wood Stoves/Outdoor Wood Boilers

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Woodstoves and outdoor wood-fired hydronic heaters (OWBs) are examples of residential wood heaters. Smoke from residential wood heaters contains emissions of fine particle matter (smoke), carbon monoxide, and other organic products, such as formaldehyde, benzene, and aromatic hydrocarbons, which form from incomplete combustion. The fine particulates of wood smoke, ten microns or less in diameter (a human hair is approximately 70 microns in diameter), can be inhaled deep into the lungs, collect in tiny air sacs (called alveoli) where oxygen enters the blood, and cause breathing difficulties and sometimes permanent lung damage. more…

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green arrow Rules/Regulatory

  • RSA 125-R Outdoor Wood-Fired Hydronic Heaters (Outdoor Wood Boilers)

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green arrow Contact Us

  • Tom Guertin
    Senior Compliance Assessment Specialist
    NHDES Air Resources Division
    29 Hazen Drive; PO Box 95
    Concord, NH 03302-0095
    (603) 271-1370
    (603) 271-1381 (fax)
  • Jeffrey T. Underhill, Chief
    Atmospheric Science & Analysis
    NHDES Air Resources Division
    29 Hazen Drive, PO Box 95
    Concord, NH 03302-0095
    (603) 271-1102
    (603) 271-1381 (fax)



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NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

copyright 2014. State of New Hampshire