Cooling Questions Homeowners Ask

AC troubleshooting—warm air, frozen coils, outdoor unit problems, thermostat issues, and breaker trips—explained in plain language.

This page is a homeowner-friendly resource from Kais Pro Repairs. If your AC runs but won’t cool, keeps shutting off, or trips power, you’ll find safe next steps here—without the confusing technical talk. If you want it handled professionally, start with cooling service or use our contact page to request help.

Serving Loganville, Snellville, Lawrenceville, Lilburn, Grayson, Between, Monroe and nearby areas across Gwinnett County and Walton County.

Safety note: if you smell burning, see smoke, hear loud buzzing/arcing, or a breaker won’t reset, shut the system off and call right away. If you suspect a power issue, we also handle electrical troubleshooting and breaker & panel repair.

Start Here: Fast Links to the Right Service

If you already know what you need, these take you straight to the right page.

Not sure what you need yet? Start with the questions below—or send us a message and tell us what your AC is doing.

Before You Call: 7 Safe Checks Homeowners Can Do

These are safe, simple checks that solve a lot of “AC not cooling” posts online. If anything smells hot, you see damaged wiring, or breakers trip—stop and request service.

Thermostat & Settings

  • Set to COOL and lower temp 2–3° below room temperature.
  • Confirm fan is on AUTO (not “ON” 24/7).
  • Replace thermostat batteries (if applicable).
  • If the thermostat seems unresponsive, request help via the contact page.

Airflow & Filters

  • Replace a dirty filter (restricted airflow can cause freezing and shutdowns).
  • Make sure supply vents are open and returns aren’t blocked.
  • If airflow is weak in multiple rooms, schedule AC service.

Outdoor Unit Basics

  • Clear leaves/debris around the unit (give it room to breathe).
  • Listen for clicking/buzzing—don’t force it to run if it sounds abnormal.
  • If the outdoor unit won’t start, it may be electrical—see electrical troubleshooting.

Breaker / Power

  • If a breaker trips once, reset it once only—if it trips again, stop.
  • A breaker that won’t reset needs diagnosis: breaker & panel service.
  • For the fastest help, use the contact page.

Cooling Questions We See Online All the Time

Tap a question to expand. These are common “Reddit + forum” AC issues—and what they usually mean in real homes.

AC Not Cooling / Poor Cooling

My AC is running but blowing warm air—what’s the most common cause?
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Common causes include restricted airflow (filter/coil), a failed capacitor, refrigerant-related problems, or the outdoor unit not actually running even though the indoor fan is on. If it’s not improving quickly, schedule cooling repair.

My AC is cooling a little but can’t keep up—why?
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This is often airflow or maintenance-related (dirty filter/coil), a weak capacitor, duct issues, or a system performance problem. We check the simple causes first, then measure system operation. Book AC service.

Why is my upstairs hot but downstairs cool?
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Multi-level comfort issues are commonly airflow, duct balance, return air, or insulation-related. We can diagnose airflow and system performance and recommend the best fix. Start with cooling diagnostics.

My AC keeps freezing up—what should I do right now?
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Turn cooling off to prevent damage and let it thaw. Check for a dirty filter and blocked airflow. Freezing is often caused by airflow restrictions or system performance issues. For a proper fix, schedule AC repair.

Outdoor Unit, Breakers & Electrical

My outdoor unit won’t turn on—could it be electrical?
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Yes. It can be a disconnect issue, breaker trip, wiring problem, or a failed electrical component. Because we do both HVAC and electrical troubleshooting, we can pinpoint whether it’s power-related or equipment-related. Start here: HVAC service or electrical troubleshooting.

My AC trips the breaker—should I keep resetting it?
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No. Repeated resets can cause more damage and can be unsafe. Breaker trips may indicate a failing motor, wiring fault, capacitor issue, or incorrect breaker sizing. Book breaker & panel service and we’ll verify the HVAC load too.

My lights dim when the AC starts—is that normal?
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A quick dip can happen when large equipment starts. But frequent dimming/flicker can point to loose connections, voltage drop, or equipment drawing too much current. Schedule electrical troubleshooting and we can also verify the HVAC side.

My AC keeps shutting off and back on—what does that mean?
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This can be short cycling from airflow issues, thermostat problems, overheating, or an electrical/control issue. It wastes energy and stresses components. Book cooling service so we can find the real cause.

Call Right Away If You Notice Any of These

  • Burning smell, smoke, or melting plastic odor
  • Breaker trips that won’t reset or keep tripping
  • Buzzing/arcing sounds near the panel, disconnect, or equipment
  • Outdoor unit buzzing and not starting (don’t keep trying)
  • Visible scorch marks, damaged wiring, or sparking

Want Us to Handle It?

If your AC isn’t cooling, is shutting off, or is tripping power, we’ll diagnose it safely, explain what we find in plain language, and recommend the best fix—no pressure. Start with the contact page, or go straight to cooling service.