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Burn Wise

Burn Wise Energy Efficiency

How Efficient is Your Appliance?        The Right Wood           Weatherization

Replacing an old wood stove or fireplace with a more energy efficient appliance can save fuel, money, and protect you and your family's health. Stoves manufactured before 1990 burn wood less efficiently-- wasting firewood, polluting the air in your neighborhood and creating dust in your home. Many cleaner, energy saving options are certified by the EPA.  In general, the lower the emissions, the higher the efficiency.

How Efficient is Your Wood-Burning Appliance?

Make sure your wood-burning stove or fireplace is an EPA-certified appliance.  To identify an EPA-certified stove, look on the back of the appliance for a metal tag, refer to your owner's manual or check the list of appliances. Stoves with solid doors are generally older and should be replaced and disposed of properly.  To learn more, visit how to choose an appliance.

Replacing old wood stoves and fireplaces increases energy efficiency. New models:

  • Are up to 50% more energy efficient.
  • Save money, time and resources.
  • Can use 1/3 less wood for the same heat.
  • Cut creosote build-up, helping reduce the risk of chimney fires.

New appliances also have environmental benefits:

  • Reduce indoor and outdoor wood smoke pollution, including carbon dioxide (CO2), methane (CH4) and black carbon (particle pollution).
  • Save billions in health benefits each year linked to cancer, asthma and other serious conditions and health effects.

FIREPLACES: Generally, a wood-burning fireplace is an inefficient way to heat your home, since most of the heat goes up the chimney.  Also, fireplaces do not burn as cleanly as EPA-certified wood stoves, creating 20 times the amount of air pollution. 

If you use a wood-burning fireplace, avoid using it as a primary source of heat.  Fireplace drafts can pull the warm air in a home up the chimney, causing other rooms to be cooler. If you’re using central heat while burning in a fireplace, your heater will work harder to maintain constant temperatures throughout the house. 

For more efficient heating with less smoke, consider asking your local retailer about gas, pellet, or EPA-certified wood fireplace inserts.  Gas log lighter kits can also be added to an existing fireplace. These devices make it easier to light a wood fire and provide more efficient start up. EPA is also working with manufacturers to bring cleaner burning fireplaces to the market through the voluntary fireplace program.

relative emissions

The Right Wood

  1. A newer, properly installed wood-burning stove produces a hotter fire, which requires less fuel and releases little smoke. 
  2. If you burn wood, make sure it is dry, or “seasoned.”  Wet wood can create excessive smoke.  Moisture meters allow you to test the moisture level in wood, and can be bought at hardware stores or on the internet.  Properly dried wood should have a reading of 20% or less.  
  • Split wood into pieces 6 inches in diameter or smaller for faster drying.
  • Stack off the ground, split side down.
  • Cover stack to protect the wood from rain and snow.
  • Store for at least 6 months for softwood, and at least 12 months for hardwood.
  1. If you smell smoke in your home or see smoke coming out of the chimney, you may be burning wood that is too wet or have a problem with your stove or fireplace.  If the problem persists after burning dry wood and opening the damper to get a full fire going, contact your local CSIA or NFI-certified professional for an inspection.
  2. Choose your firewood wisely. Hard wood tends to have the most energy per cord.

Weatherization

Sealing and insulating cracks and crevices in your home can help improve indoor temperatures and save energy.  However, don’t avoid the monster in the room- an old wood stove or fireplace.  A more energy efficient stove will provide more heat while using less fuel.

If you have an existing wood stove or fireplace, make sure to inspect the chimney annually for any cracks-- inside and out. Chimney cracks can allow smoke to enter your home, or can expose your chimney’s components to high temperatures that may cause a fire.  Contact your local certified chimney sweep or CSIA for more information.