When it comes to residential HVAC systems, sheet metal air ducts are the most popular choice. Made of galvanized steel or aluminum, these ducts are thick and solid, making them very durable. However, their non-porous surface can trap dust and other particles, so it's important to have them professionally cleaned from time to time to maintain good air quality. Flexible ducts are also an option for residential HVAC systems.
These tubes are composed of steel wire propellers covered in flexible but durable plastic and are usually surrounded by insulation to keep the air at the right temperature. Flexible ducts are the easiest to install and the second least expensive option, but they can be prone to bending and kinking, which can restrict airflow and decrease the efficiency of the HVAC system. Fiberglass ducts are another option, but they require intensive cleaning due to their sealed inner lining. This can make them less durable than other types of ducts.
When it comes to choosing the right type of duct for your home, it's important to consult a professional HVAC specialist. They will be able to calculate airflow, determine the types of ducts that must be used to meet housing requirements, and sketch out an air distribution system that positions the equipment and sizes the ducts appropriately. Overall, sheet metal is the most recommended type of air duct for residential HVAC systems due to its non-porous surface, which does not allow mold or bacteria to reproduce in the air ducts. It is also more resistant to bending and kinking than flexible ducts, making it a better choice for maintaining good airflow.
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