In houses with air heating and cooling systems, ducts are used to distribute conditioned air throughout the house. In a typical house, about 20 percent of the air that moves through the duct system is lost due to leaks, holes and poorly connected ducts. This results in higher utility bills and difficulty in keeping the house at a comfortable temperature regardless of how the thermostat is set.
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- Sealing and insulating ducts can help with common comfort problems, such as rooms that are too hot in the summer or too cold in the winter.
- Fumes from household and garden chemicals, insulation particles and dust can enter your duct system and aggravate asthma and allergy problems.
- During normal operation, gas appliances such as water heaters, clothes dryers, and furnaces release combustion gases (like carbon monoxide) through their ventilation systems. Leaky ductwork in your heating and cooling system may cause “backdrafting,” where these gases are drawn back into the living space, rather than expelled to the outdoors. Sealing leaks can minimize this risk.
- Leaky ducts can reduce heating and cooling system efficiency by as much as 20 percent.
- By sealing your ducts and reducing the amount of energy necessary to comfortably heat or cool your home, you can reduce the amount of air pollution generated.
- Are your summer and winter utility bills unusually high?
- Are your rooms difficult to heat and cool?
- Do rooms feel stuffy and uncomfortable?
- Are your ducts are located in an attic, crawlspace or the garage?
- Do you have tangled or kinked flexible ducts in your system?
If you answer yes to any of the above, chances are your ducts may need to be inspected and repaired.
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