Top Reasons Your AC is Running but Not Cooling and What to Do About It
There’s nothing worse than flipping on your air conditioner on a warm Michigan day and realizing—it’s blowing hot air. If you’re in Waterford or anywhere in Oakland County, you expect your AC to keep you cool and comfortable, not make things worse. Is your AC running but not cooling? It can be a sign of anything from a simple filter issue to something more serious.
At Kotz Heating, Cooling & Plumbing, we help homeowners every day figure out what’s causing their AC troubles. Below, we’ll go over common problems, easy checks you can do at home, and when it’s time to call in the pros.
AC Repair in Waterford, MI
Even if your system isn’t cooling, the good news is that many AC problems are fixable. Whether you need a quick air conditioner repair or a full system replacement, our NATE-certified team is ready to get your system back on track.
Before making that service call, check out a few of the most common causes of an AC blowing warm air.
Why Your AC Is Running But Not Cooling
1. Dirty or Clogged Air Filters
A dirty filter might not seem like a big deal, but it can seriously reduce your AC’s ability to cool. Blocked airflow makes the system work harder and less efficiently, which often leads to warm air blowing into your home.
Tip: Regular filter changes are part of our Red Carpet Maintenance Program, so you don’t have to worry about remembering.
2. A Clogged Condensate Drain
Your AC removes humidity while cooling your air. The moisture drains through a line—but if that line gets clogged, the humidity stays trapped. That means warm, sticky air could start blowing through your vents.
This is something we inspect and clean during seasonal AC maintenance.
3. Refrigerant Leak or Low Levels
Refrigerant is the cooling agent in your system. If levels are low or there’s a leak, your AC won’t cool properly. In fact, the air conditioner might stop cooling altogether and freeze up.
Don’t try to handle refrigerant yourself. Our licensed technicians can repair leaks and recharge your system safely.
4. Outdoor Unit Blocked by Debris
Your outdoor AC unit needs space to breathe. If it’s covered by leaves, dirt, or surrounded by shrubs, it may overheat or push out hot air instead of cool. Check that there’s at least two feet of clear space around the unit.
5. Your System Is Simply Too Old
If your air conditioner is 15–20 years old, it may be near the end of its life. Worn-out parts, low efficiency, and outdated technology can all lead to hot air and high energy bills. At this point, repairs may be more costly than they’re worth.
Our Comfort Specialists can help you find a replacement system that’s energy-efficient and built to suit your home’s needs.
Stay Ahead of the Heat with Regular Maintenance
The best way to prevent AC problems is through routine maintenance. Our Red Carpet Maintenance Program includes:
- Full system inspections
- Filter changes
- Coil cleanings
- Priority scheduling
- Discounts on repairs
With scheduled tune-ups, you can catch small issues before they become major headaches.
When to Call the Pros at Kotz
If your air conditioner is still not cooling your home after trying the steps above, it’s time to bring in the experts. At Kotz Heating, Cooling & Plumbing, we’ve been serving Oakland County residents since 1929. Our commitment to integrity, quality, and personalized service has made us a trusted name in home comfort.
We’ll Get the Cool Air Flowing Again—Fast
No one wants to deal with a blowing hot air issue during summer in Michigan. Whether it’s a minor fix or time for a new system, our team will handle it with care and professionalism.
Call Kotz today to schedule your AC repair or to learn more about our Red Carpet Maintenance Program. If you prefer, you can also contact us online.Kotz Heating, Cooling & Plumbing is proud to serve Waterford and the surrounding Oakland County communities. With NATE-certified technicians and top-of-the-line products from trusted manufacturers, you can count on us to keep your home cool and comfortable all season long.
