The answer to 'when to service ductwork' is that you should service your ductwork regularly, typically every 1-2 years, to ensure optimal performance and efficiency. Proper ductwork maintenance helps improve indoor air quality, prevent energy losses, and extend the lifespan of your HVAC system.
During a ductwork service, a professional HVAC technician will inspect the ducts for any leaks, damage, or blockages, and make necessary repairs or cleaning. They may also check the ductwork insulation and airflow to identify and address any issues. Regular ductwork maintenance is an important part of maintaining your home's HVAC system and ensuring it operates at its best.