When your air conditioner is just plain not working, it seems obvious that repairs are necessary. Or who knows, maybe you need a whole new air conditioner! Here’s the thing, though: sometimes the problem isn’t as bad as it seems, especially if you live in an older house where exploring HVAC options for older homes can provide solutions beyond simple repairs.
What should I check before calling HVAC repair service when my AC stops working?
- Check the circuit breaker: Make sure the AC’s breaker hasn’t tripped. Reset it if needed.
- Inspect thermostat settings: Ensure it’s set to “Cool” and the temperature is lower than the room’s current temperature.
- Replace dirty air filters: A clogged filter can block airflow and cause the system to shut down.
- Look for ice buildup: Ice on the indoor or outdoor unit can signal restricted airflow or refrigerant issues.
- Test the batteries in the thermostat: Weak or dead batteries can cause communication failure.
Examine the outdoor unit: Remove any debris like leaves or grass that could block airflow.
While we would never encourage anyone to DIY an AC repair—you could injure yourself, damage the system, and void your warranty—there are times when repairs are not actually necessary. Before you decide it’s time to call in the experts for an air conditioner that’s not working, go through this simple troubleshooting checklist.