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In houses with forced-air heating and cooling systems, ducts are used to distribute conditioned air throughout the house. In a typical house, however, about 20 -40 percent of the air that moves through the duct system is lost due to leaks, holes, and poorly connected ducts. The result is higher utility bills and difficulty keeping the house comfortable, no matter how the thermostat is set. This is where encapsulating the ductwork with spray foam could work.

Using a spray foam to improve the air duct performance 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, aggravating asthma and allergy problems. Aeroseal ducts can help improve indoor air quality by reducing the risk of pollutants entering ducts and circulating through your home. The use of air quality testing equipment may be necessary to validate the changes.

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 duct leaks can minimize this risk.

Leaky ducts can reduce heating and cooling system efficiency by as much as 20 percent. Sealing and insulating ducts increases efficiency, lowers your energy bills, and can often pay for itself in energy savings. Plus, if you’re planning to install new heating and cooling equipment, a well-designed and duct seal system may allow you to downsize to a smaller, less costly heating and cooling system that will provide better dehumidification.

Energy used in our homes often comes from the burning of fossil fuels at power plants, which contributes to smog, acid rain, and climate change. Simply put, the less energy we use in our homes, the less air pollution we generate. By using an air barrier sealant on your old system, reducing the amount of energy necessary to comfortably heat or cool your home is possible and you can reduce the amount of air pollution generated.

Some Ducts Are Not Connected










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