The answer to 'cleaning schedule for air duct' is that most experts recommend having your air ducts cleaned every 3-5 years, or more frequently if you have pets, smoke indoors, or have recently completed a home renovation project. Regular duct cleaning helps improve indoor air quality, reduce allergens, and ensure your HVAC system is operating efficiently.
The frequency of duct cleaning can vary depending on factors like the size of your home, the number of occupants, and the presence of pets or smokers. It's generally a good idea to have a professional inspection every few years to assess the condition of your ductwork and determine if cleaning is necessary.