01 Jul Common Summer HVAC Problems And How to Avoid Them

Scorching Temps, Stressed Systems

With the Tennessee heat index soaring past 100 degrees recently, your air conditioner isn’t just working hard – it’s working overtime.

At TMC, we’ve seen how heatwaves push HVAC systems to their limits, and we want to help you avoid a breakdown when you need cool air the most.

Here are the most common AC issues we see during extreme heat – and what you can do to stay ahead of them.

1. System Overload or Short Cycling

When your AC runs non-stop, it can overheat, short cycle, or even shut down.

Tip: Make sure your filters are clean, keep blinds closed during peak sun hours, and don’t set your thermostat drastically low – this forces your system to work harder without cooling faster.

2. Frozen Coils

Yes, even in extreme heat, your system can freeze up. This usually happens when airflow is restricted.

Tip: Check your air filters and vents regularly. Dirty filters block airflow and cause coil issues.

3. Refrigerant Leaks

Low refrigerant makes your system less efficient and unable to cool properly – especially in high heat.

Tip: If your AC is blowing warm air or takes too long to cool your home, it might be time for a recharge or leak repair. Call a pro before it gets worse.

4. Clogged Drain Lines

Humidity levels spike in Tennessee summers, which means your system is pulling more moisture out of the air. If your drain line is clogged, that water can back up and damage your unit.

Tip: Schedule a quick tune-up or drain line inspection—especially during high humidity weeks.

5. Electrical or Capacitor Failures

With the system running constantly, older capacitors and components can burn out.

Tip: If your unit won’t start, makes strange noises, or trips the breaker, it could be an electrical issue. Shut it off and call TMC to take a look.

Don’t Wait Until It Breaks

The middle of a heatwave is the worst time to be without AC. If you notice any of these issues – or just want peace of mind—schedule a summer check-up with TMC today. Our team is ready to keep you cool, comfortable, and covered during Tennessee’s hottest days.