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Residential Wood Burning

Outdoor Wood Boilers (OWBs)

A smoking outdoor wood boiler

OWBs (also known as outdoor hydronic heaters) are fuel burning devices:

  • designed to burn wood or other fuels;
  • that the manufacturer specifies for outdoor installation or installation in structures not normally occupied by humans; and
  • that are used to heat building space and/or water through the distribution, typically through pipes, of a gas or liquid (e.g., water or water/antifreeze mixture) heated in the device.

A typical unit looks like a small metal storage shed with a stack. OWBs can also be used to heat swimming pools, greenhouses, milk rooms, etc.

Regulations for OWBs

DEC adopted Part 247, Outdoor Wood Boilers (leaves DEC website) on December 29, 2010. The rule affects owners, operators, manufacturers and distributors of OWBs. It is also important to check with your town clerk to see if there are any local laws related to OWBs in effect in your town.

Nuisance Situations

Nuisance situations typically arise in cases where an OWB is installed close to a property boundary line, has a short stack and/or burns unseasoned wood or other inappropriate fuel. Examples of a nuisance condition are:

  • activation of smoke detectors in neighboring structures;
  • visibility impairment on a public highway; or
  • a visible plume from the OWB contacting a building on an adjacent property.

Contact the DEC regional office for your location if you are adversely impacted by smoke from a neighbor's OWB.

NYS Certified OWB Models

Residential use, 100' minimum setback, cord wood fuel

Central Boiler models and certified emission rates:

  • Classic Edge 360 - 0.12 lb/mmBtu
  • Classic Edge 560 - 0.14 lb/mmBtu
  • Classic Edge 350 - 0.18 lb/mmBtu
  • Classic Edge 750 - 0.18 lb/mmBtu
  • E-Classic 3250 - 0.18 lb/mmBtu
  • Classic Edge 550 - 0.31 lb/mmBtu

Greentech Manufacturing, Inc. models and certified emission rates:

  • Crown Royal RS7200E - 0.13 lb/mmBtu
  • Crown Royal RS7300-E - 0.29 lb/MMBtu

Hawken Energy, Inc. models and certified emission rates:

  • GX30 - 0.17 lb/MMBtu
  • GX15 - 0.18 lb/mmBtu

Heatmor model and certified emission rate:

  • X Series 200 - 0.30 lb/MMBtu

Hydronic Specialty Supply model and certified emission rate:

  • Drummer 35 - 0.32 lb/MMBtu

Northwest Manufacturing, Inc. model and certified emission rate:

  • Woodmaster CleanFire 400 - 0.07 lb/MMBtu

Polar Furnace model and certified emission rate:

  • G2-Plus - 0.07 lb/MMBtu

SteelTech Inc. (Heatmaster ss) models and certified emission rates:

  • G200-2/GS200 - 0.066 lb/MMBtu
  • G100/GS100 - 0.073 lb/MMBtu

WoodMaster, Inc. models and certified emission rates:

  • CleanFire 300 - 0.12 lb/MMBtu
  • CleanFire 500 - 0.14 lb/mmBtu

Commercial use, 200' minimum setback, cord wood fuel

DECTRA Corporation models and certified emission rates:

  • Garn WHS 2000 - 0.07 lb/MMBtu
  • Garn WHS 1500 - 0.13 lb/mmBtu

Greentech Manufacturing, Inc. model and certified emission rate:

  • Crown Royal RS7400-E - 0.236 lb/mmBtu

Heatmor models and certified emission rates:

  • 400-4S - 0.28 lb/MMBtu
  • X Series 350 - 0.31 lb/mmBtu

SteelTech Inc. (Heatmaster ss) model and certified emission rate:

  • G400/GS400 - 0.228 lb/mmBtu

Indoor Wood Stoves

New indoor wood stoves are not regulated by the DEC. They are regulated by the United States Environmental Protection Agency (EPA) through a New Source Performance Standard (40 CFR 60, Subpart AAA). For more information, visit EPA's Wood Heater Compliance Monitoring Program (leaves DEC website).

Fireplaces and Fireplace Inserts

EPA has a voluntary program regarding fireplaces and fireplace inserts. For more information, visit EPA's Burn Wise (leaves DEC website), a program that promotes the importance of burning the right wood, the right way, in the right appliance.