What maintenance should be done on an AC unit yearly?

Yearly AC maintenance should include a professional tune-up with a full system inspection, cleaning, and basic component service. Most performance issues come from dust buildup and normal wear that restrict airflow and lower efficiency. Technicians inspect thoroughly, identify small problems before they become major, and provide a detailed report so you know the system’s condition. Our technicians routinely perform this service for homes around McLean as part of scheduled visits.

What a yearly visit typically covers:

• Replace or clean the HVAC air filter and set service reminders.
• Clear and flush the condensate drain/line to prevent water backups.
• Run full diagnostics and deliver a written maintenance report.
• Recommend indoor air quality steps like duct cleaning or purifier filter service when appropriate.

If your AC is due or you notice weaker airflow or rising humidity, schedule a seasonal tune-up before peak heat. <br/> Updated: 2026-05-15 <br/> Need help in McLean, VA? Call (571)-650-1016 or book online. "Very good experience for HVAC maintenance." — Chen-Chia L.