Insulation duct helps keep hot and cold air in your home where it belongs, and helps to minimize energy usage. It can also reduce noise, prevent mold and mildew growth in ductwork and make a home healthier, more comfortable and safer for its occupants.
The cost of insulation duct can vary, depending on the type of insulation and the amount of ductwork to be insulated. Home size and duct condition are other factors that affect the price of a job. The choice of insulation material — fiberglass, cellulose or mineral fiber — is also important. Fiberglass is the most common and typically the least expensive. Its performance is rated by its R-value, which is its resistance to air and temperature flow. Cellulose and mineral fiber insulations offer higher R-values, but they are more expensive to install because they must be blown in, usually by professionals using special tools.
A properly insulated and sealed duct system will minimize heat loss, which can account for about 30% of all energy use in a home. It will also help ensure a more uniform heating and cooling throughout the house and reduce strain on HVAC equipment, helping it last longer.
Uninsulated ducts can allow moisture to build up, particularly in cold areas of the home, leading to rust and mold growth. This condensation can carry spores into rooms, contributing to allergies and respiratory issues. Insulating ducts can also lower the humidity in a home, which can lead to fungus, mildew and rot.