
DIY AC Maintenance Checklist
While professional servicing is essential, you can take several steps to maintain your AC unit. A
little effort goes a long way in maintaining its functionality and ensuring its long life.
1. Clean or Replace Air Filters
Dirty air filters restrict airflow, forcing your AC to work harder and consume more energy. Over
time, this can lead to overheating and increased wear and tear on internal components.
Depending on usage and indoor air quality, you should clean or change your filters every one to
three months.Regular filter changes may be necessary to maintain optimal performance in
homes with pets or high dust levels.
2. Inspect and Clean the Coils
Over time, dirt builds up on the condenser and evaporator coils, decreasing efficiency. If the
coils are covered in dust, the AC unit must run longer cycles because they cannot absorb heat
effectively. To clean them, use a soft brush or a coil cleaner—at least once a year. In addition to
increasing cooling effectiveness, maintaining clean coils lowers total energy usage.
3. Check the Thermostat Settings
Make sure your thermostat is set to an energy-efficient temperature and operating correctly. To
have more control over how much air conditioning you use, consider switching to a
programmable thermostat. Smart thermostats maximize energy efficiency and minimize
needless cooling when you're not home by enabling you to set schedules and change
temperatures remotely.
4. Clear the Condensate Drain
A clogged condensate drain might cause humidity problems and water leaks. Excessive
moisture accumulation might also promote mold formation and mildew, affecting indoor air
quality. Inspect the drain line regularly and clear any blockages using a wet/dry vacuum.
Keeping the drain line clear prevents water damage and maintains a healthy indoor
environment.
5. Inspect Electrical Components
Turn off the power before inspecting electrical connections. Look for worn-out wires, loose
connections, and signs of overheating. If you notice burned or frayed wires, it's best to call a
professional technician to handle the repairs. Defective electrical parts may cause system
failures or possibly present a fire risk.