A duct system that is well-designed and properly sealed can make your home more comfortable, more energy efficient, and safer. Here are some reasons why duct improvements are a wise investment:
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.
Sealing ducts can help improve indoor air quality by reducing the risks of pollutants entering ducts and circulating through your home. Fumes from household and garden chemicals, insulation particles, and dust can enter your duct system through leaks and can aggravate existing 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. Leaking ductwork in your heating and cooling system may cause “backdrafting,” where these gases are drawn 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. Duct sealing and insulating 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, know that a well designed and sealed duct system may allow you to downsize to a smaller, less costly heating and cooling system.
Energy generation is one of the largest contributors to greenhouse gases. 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.
Ducts are an integral part of a forced-air system, such as a furnace, heat pump, or central air conditioner. The job of ducts is to circulate heated or cooled air evenly to every room in a house. Ducts are commonly concealed in walls, ceilings, attics, basements, or crawl spaces. This can make them difficult to access and repair.
Poorly performing ducts often leak the air that you paid to heat and cool. Poorly performing ducts can cause your heating and cooling system to work harder to keep your home at a comfortable temperature.
A well-designed, sealed, and insulated duct system will improve your system’s ability to consistently cool and heat every room in your home.
If you suspect you have poorly performing ducts, EPA recommends using a professional contractor for duct improvements. Usually, contractors who install heating and cooling systems also repair ductwork. Typically, when making improvements to your duct system, a contractor will:
Source: Environmental Protection Agency