We all want to stay comfortable when the Maryland heat rolls in—but if your air conditioner is running around the clock, something’s off. A constantly running AC isn’t just annoying, it’s also a red flag that your system might be struggling. The good news? You don’t have to sweat it alone.
At Sines and Sons, we’ve helped Anne Arundel County homeowners tackle this issue for decades. Whether it’s a quick fix or something that needs a closer look, we’ll help you figure it out without upsells or guesswork. Here’s what might be going on behind the scenes—and how to get your home back to cool and calm.
Common Reasons Your AC Runs Nonstop
Before you assume the worst, it’s worth checking a few simple things. Sometimes, the fix is easier (and cheaper) than you think.
Dirty air filters – A clogged filter chokes airflow, making your system work overtime to push out cool air. If it’s been more than a month or two, it’s time for a change.
Incorrect thermostat settings – If your system is set to “ON” instead of “AUTO,” the fan may run continuously, even when your home is at the right temp.
Leaky ductwork – Air might be escaping into unconditioned spaces like your attic or crawlspace, forcing your AC to run longer to compensate.
Low refrigerant levels – If your system isn’t cooling properly, it may keep running in an attempt to reach the set temperature—especially if refrigerant is low due to a leak.
Poor insulation or old windows – Your AC could be working overtime just to keep up with the heat pouring in through outdated windows or thin insulation.
The Long-Term Cost of Ignoring It
Letting your system run constantly without addressing the root cause can lead to a whole host of issues. We’re talking higher energy bills, faster wear and tear on components, and eventually… a full system breakdown. That’s a headache no homeowner wants—especially in the middle of a Maryland summer.
Even if your home feels cool enough, a nonstop-running unit is burning energy and dollars. And if it’s struggling to reach your set temperature, you might not even be getting the comfort you’re paying for.
When to Call in a Pro
If you’ve already checked the basics and your AC is still working overtime, it’s time to call someone who can take a deeper look. Our team at Sines and Sons knows exactly what to look for—and we won’t push repairs you don’t need.
We’ll inspect your thermostat, check refrigerant levels, look for duct leaks, and make sure your system is running as efficiently as possible. Because when your AC is doing its job right, you shouldn’t even have to think about it.
Not sure what’s causing your AC to run constantly? Schedule a service call with us today. You can also learn more about our Air Conditioning Services, browse our Heating Repair Services, or check out our HVAC Sales page if your system’s due for an upgrade. At Sines and Sons, we help Anne Arundel County homeowners stay cool, efficient, and stress-free—no matter how hot it gets.