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What maintenance should be done on an AC unit yearly?

Yearly AC maintenance should include filter care, coil cleaning, drainage checks, electrical inspection, and a performance tune-up. Most efficiency loss comes from dirt that blocks airflow and insulates coils, making the system run longer and harder. A proper visit also verifies refrigerant charge, thermostat function, and overall airflow so small issues don’t turn into breakdowns. We handle this work across the Roanoke and New River Valley, including the Cave Spring area. For tasks that open the refrigerant circuit or involve live voltage, a certified HVAC technician should perform the work.

During a yearly visit, a technician will typically:

  • Replace or wash the air filter and confirm correct size.
  • Clean outdoor condenser fins and indoor evaporator coil.
  • Clear and treat the condensate drain; test any safety float switch.
  • Inspect wiring and capacitors, tighten connections, and verify refrigerant level and temperature split.

Plan service in spring to catch issues before heat waves and keep efficiency steady.

Updated: 2026-04-02

Need help in Cave Spring, VA? Call 540-583-4765 or book online.

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