How often should the air ducts and dryer vent be cleaned?

The frequency of air duct and dryer vent cleaning depends on several factors, including the size of your home, the number of occupants, and your lifestyle. In general, it's recommended to have your air ducts cleaned every 3-5 years, and your dryer vent cleaned annually. However, if you have pets, smokers, or family members with allergies or respiratory issues, you may need to clean your air ducts more frequently. It's always a good idea to consult a professional to determine the appropriate cleaning schedule for your situation.