What Are Air Ducts? A Complete Guide to HVAC Ductwork - Angi
https://www.angi.com/articles/air-ducts.htm
WebMar 28, 2023 · Highlights. Your air ducts deliver cool and hot air throughout your home. There are sheet metal, fiberglass-lined, fiberboard, and flexible ducts. Some signs you need a cleaning include dirty vents and a pest infestation. Air duct cleaning costs $380 on average and ranges between $270 to $490.
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