By early August, your air conditioner has probably been working overtime. Long, hot days can put a real strain on even the best HVAC systems. If your AC is starting to sound a little different, run a little longer, or cool a little less, it might be trying to tell you something.
At Northwest HVAC, we’re big believers in listening to your system before it breaks—because that’s usually when the fix is faster, cheaper, and a whole lot less stressful.
Here are a few signs to watch for as summer winds down:
Longer Run Times
If your system seems like it’s running all day without ever catching up, that could mean reduced efficiency. Clogged filters, dirty coils, or low refrigerant can all slow your system down—especially after a long stretch of heavy use.
Uneven or Inconsistent Cooling
Noticing hot spots in some rooms or inconsistent airflow? That’s not normal. It could be a sign of blocked ducts, a struggling blower motor, or a system that’s starting to wear out.
Strange Smells or Sounds
If you’re catching a musty odor or hearing grinding, squealing, or rattling, it’s worth a look. Small issues like a worn motor or moisture buildup around the coil can grow into expensive repairs if left too long.
Higher Energy Bills
Your utility company didn’t raise rates—but your bill keeps creeping up. That’s often a sign your AC is working harder than it should to deliver the same comfort. A late-summer tune-up might be all it needs.
It’s Just… Old
If your system is over 12 years old, these signs may be the beginning of the end. That doesn’t mean you need to replace it right away—but now’s a good time to start planning. Fall often brings better deals, and you’ll avoid the spring rush.
End-of-Season Tip:
Late summer is a great time for a professional checkup. Even if your AC made it through the heat, a quick inspection can catch wear-and-tear before it turns into a surprise next June.
We’re not here to pressure you into a new system. We’re here to help you get the most out of the one you already have—and be ready when it’s time to make a change.