Why Isn’t My AC Working? 6 Common Reasons and Quick Fixes

Is your air conditioner not keeping you cool? Don’t worry — you’re not alone.

At SkyTech Home Comfort, we know how frustrating it can be when your AC system stops working, especially in the middle of a hot day. But before you panic, here are 6 common causes (and fixes) for AC issues — many of which are easier to resolve than you think!

Whether it’s a quick filter check or a more complex repair, understanding the root of the problem is the first step toward bringing the comfort back into your home. Our experts have handled it all — and we’re here to help you do the same with ease and confidence.

“Comfort isn’t just a luxury — it’s what makes a house feel like home.”

SkyTech Home Comfort

Dirty or Clogged Air Filter

Your AC filter is your first line of defense against dust and debris. But when it’s clogged, it restricts airflow — making your system overwork and underperform. In some cases, it can even cause the evaporator coil to freeze!

Quick Tip: Check and replace your filter every 1–3 months to keep things running smoothly.

Thermostat Troubles

A wrongly set or malfunctioning thermostat can trick your AC into working improperly — or not at all. Whether it’s a dead battery or incorrect mode, this tiny device can cause big problems.

Quick Tip: Make sure it’s set to “cool,” the temperature is correct, and the batteries are working. For smart thermostats, check the app or Wi-Fi settings.

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Dirty Outdoor Condenser Coils

Your outdoor condenser unit needs to release heat efficiently — but dirt, grass, and debris can build up on the coils, causing your system to struggle.

Quick Tip: Gently rinse your outdoor unit with a hose (never use high pressure) to keep it clean and efficient.

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Low Refrigerant Levels

Refrigerant is what cools the air inside your home. If your AC is running but not cooling, a leak could be the culprit.

🚨 Warning Signs:

• Warm air blowing from vents
• Ice buildup on lines
• Hissing or bubbling sounds
• Higher energy bills

What to Do: Call a certified HVAC technician (like us!) — refrigerant issues are not DIY-safe.

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Frozen Evaporator Coil

When airflow is restricted (due to dirty filters or blocked vents), your coil can freeze up. This stops the cooling process entirely.

Quick Tip: If you spot ice, shut off your AC and let it thaw. Then call us to diagnose the underlying issue before restarting.

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Electrical Component Failures (Capacitor or Motor)

If your AC makes humming noises, has weak airflow, or shuts off randomly, the motor or capacitor may be failing.

Safety Tip: These parts carry electrical current — don’t try to fix them yourself. Contact our expert technicians for safe, professional repair.

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☎️ Need Fast AC Help? Call SkyTech Home Comfort

Your comfort is our priority. At SkyTech Home Comfort, we offer fast, friendly, and affordable AC repair services. Whether it’s an emergency breakdown or a quick maintenance check, our certified technicians are available for same-day and next-day appointments.

✅ Free in-home assessments
✅ 24/7 emergency response
✅ Family-run, trusted service across the region

👉 Don’t sweat it — call SkyTech and get cool again today!