The amount of time air duct cleaning takes can depend on how extensive your duct system is, how old your air ducts are, and whether they have ever been cleaned. On average, expect a standard size home (between 2,000 and 3,000 square feet) to take 2-5 hours for one to two technicians to clean. Here are the proper protocol and equipment you should expect from a professional duct cleaning service, as recommended by the Environmental Protection Agency:
Keeping your air ducts clean provides many benefits to you and your home, first and foremost being greatly improved indoor air quality. Dirty air can bog down your home, but a clean air-duct system eliminates these problems. Clean air ducts can also improve the energy efficiency of your HVAC system. Contaminants in the air ducts can lead your heating and cooling system to work harder and shorten its lifespan. Clean HVAC systems use less energy and therefore cost less money out of your pocket. Higher indoor air quality keeps your HVAC system free of corrosion and protects your HVAC investment.