David Sorrow | Jul 21 2026 14:00
What to Do When Your AC Stops Working During a Heat Wave

When a North Carolina heat wave hits, your air conditioner becomes more than a comfort—it becomes a necessity. But if your AC stopped working right when temperatures spike, it can quickly turn into an emergency. At Precision Climate, we see a major rise in service calls during July heat waves, especially when systems are already running nonstop.

If you’re dealing with an AC outage, here are the most important HVAC emergency tips to follow.

1. Check the Basics First

Before assuming the worst, check these simple issues:

  • Make sure your thermostat has power and is set to “Cool”
  • Inspect the breaker panel for a tripped breaker
  • Confirm air filters aren’t clogged
  • Check for ice on the indoor or outdoor unit (if so, turn system off)

These quick steps can save you from unnecessary repairs—and get your AC running again fast.

2. Turn the System Off If It’s Frozen or Overheating

If you see ice on the refrigerant lines, coils, or inside the air handler, turn the system off immediately. A frozen unit cannot cool and may cause severe damage if left running. Likewise, if the outdoor unit seems extremely hot or smells burnt, shut it down and wait for a technician.

3. Keep Your Home as Cool as Possible

While waiting for emergency AC repair in Mt Holly, take steps to maintain safe indoor temperatures:

  • Close blinds or curtains on sun‑facing windows
  • Use ceiling fans to circulate air
  • Stay hydrated and avoid heat‑producing appliances
  • Open windows at night if temperatures drop

If your indoor temperature rises above 85–90°F, consider staying with family, friends, or a public cooling center—especially for children, seniors, or pets.

4. Don’t Try to Fix Refrigerant or Electrical Issues Yourself

Heat waves push AC systems to their limit. Refrigerant leaks, failed capacitors, and electrical failures are extremely common, but they must be handled by licensed professionals. DIY fixes can be dangerous and often lead to more expensive repairs.

5. Consider Replacement If Your System Is Near the End of Its Lifespan

Heat waves often expose weaknesses in older AC units. If your system is 12–15 years old, struggles to cool, or breaks down multiple times in a season, replacement may be the most cost‑effective solution—especially during peak demand.

Why Heat Waves Cause AC Breakdowns

Nonstop operation stresses compressors, motors, capacitors, and electrical components. High humidity also makes your system work harder, increasing the likelihood of failure at the worst possible time.

Precision Climate Can Help—Fast

As a veteran-owned HVAC company serving Mt Holly, Gaston County, and the Greater Charlotte area, Precision Climate provides fast and reliable emergency service when your AC stops working during extreme heat. We’ll diagnose the problem quickly, give honest guidance, and get you comfortable again as soon as possible—whether that means a repair or a replacement.

AC out during a heat wave? Contact Precision Climate for emergency AC repair today.