The answer to 'when to service duct cleaning' is that you should have your air ducts cleaned every 3-5 years, or more frequently if you have pets, smoke indoors, or have recently completed a home renovation. Proper duct cleaning helps improve your indoor air quality, reduce allergens, and ensure your HVAC system is running efficiently.
Duct cleaning is a job best left to professional HVAC technicians, as they have the specialized equipment and expertise to thoroughly clean your entire ductwork system without causing any damage. They can also inspect for any issues like leaks or blockages that may require repair.