Why Your AC Might Be Running Nonstop (and What to Do About It)
Has your air conditioner been running non-stop lately—even when it's not scorching outside? If so, you’re not alone. Here in King and throughout the Piedmont Triad, we get a lot of calls this time of year from homeowners noticing their AC seems to never take a break.
While it’s normal for your system to run more often during our hot, humid summers, a constantly running AC could be a sign that something’s not quite right. Let’s take a closer look at what might be going on—and what you can do to fix it.
1. The North Carolina Heat Is No Joke
Summer in King means sticky humidity and long stretches of 90°+ days. In this kind of heat, it’s not unusual for your AC to run longer cycles to keep your home comfortable. But if it never shuts off, or struggles to reach your thermostat setting, that’s a red flag.
What to do:
First, make sure your thermostat settings are realistic—setting it too low (like 68°F in July) can cause your system to work overtime. If your system still won’t cycle off at a reasonable setting, it may need professional attention.
2. Dirty Air Filter
A clogged filter restricts airflow and makes your system work harder than it should, causing longer run times and lower efficiency.
What to do:
Check your filter. If it's dirty—or if you can’t remember the last time you changed it—it’s time for a replacement. We recommend checking filters monthly and changing them every 1–3 months, depending on your home and usage.
3. Thermostat Issues
Sometimes the problem isn’t the AC unit—it’s the thermostat. If it's malfunctioning or set to “fan on” instead of “auto,” your system may seem like it's always running.
What to do:
Double-check that your thermostat is set to “auto,” so the fan only runs during active cooling cycles. If the issue persists, consider having it tested or upgrading to a smart thermostat. A/C Rescue can help you pick the right one for your home and budget.
4. Leaky Ductwork
Cool air could be escaping through holes, cracks, or loose connections in your ductwork—especially in attics, crawl spaces, or older homes. That lost air means your AC keeps running to make up for it.
What to do:
If you suspect a ductwork issue, schedule an inspection. Our team can test your system, seal leaks, and restore airflow where it matters—inside your home.
5. Wrong Size System
If your AC is too small for your home, it will run constantly trying to cool the space. If it's too large, it may short cycle (turning on and off too often), which also strains the system and reduces efficiency.
What to do:
If your system has always struggled to keep up, we can perform a load calculation to see if your AC is properly sized. Upgrading to a properly matched unit can make a huge difference in comfort and costs.
6. It Needs Maintenance or Repairs
Even the best AC systems need regular care. Low refrigerant, dirty condenser coils, or worn-out parts can all cause your system to run nonstop without effectively cooling your home.
What to do:
If it’s been more than a year since your last tune-up, now’s the time. Regular maintenance from A/C Rescue keeps your system running efficiently, helps catch small problems early, and extends the life of your equipment.
Trust A/C Rescue, LLC to Keep You Comfortable
A constantly running air conditioner doesn’t just wear out your system—it wears out your wallet too. Whether your system needs a quick fix, a filter change, or a full inspection, the team at A/C Rescue in King, NC is ready to help.
👉 Schedule your service appointment today and ask about our Priority Care Membership for year-round savings, faster service, and peace of mind.






