Why is my AC not cooling my house?
If your AC isn’t cooling your house, the problem could be a dirty air filter, low refrigerant, a frozen evaporator coil, or a faulty compressor. In North Alabama’s humid climate, frozen coils are especially common. At Vandys LLC, we diagnose and fix cooling problems quickly—our service call fee is just $110, and we’re available 7am-6pm daily, plus 24/7 emergency service.
Quick Answer
Common reasons your AC isn’t cooling: dirty filter, low refrigerant, frozen coils, clogged condenser, or compressor failure. Call Vandys LLC for a $110 diagnostic to identify the exact problem.
Dirty or Clogged Air Filter
The most common reason an AC system stops cooling effectively is a dirty air filter. Your filter traps dust, pollen, and debris—and in North Alabama’s high-pollen environment, filters clog faster than in other regions. A clogged filter restricts airflow, forcing your system to work harder and reducing cooling capacity. The fix: Check your filter monthly and replace it every 1-3 months during peak cooling season. This simple $20-$30 fix often solves the problem immediately.
Safety switch is Triggered
A lot of systems in northern Alabama have a safety switch either in the drain pan or right off the air handler unit. This can be a good thing because that means the trigger is saving you thousands of dollars in unwanted home repairs, but here is how to fix it. If the PVC is plugged up, stick a shop vac up the PVC pipe near your condenser unit. If your pan is filled with water, call Vandys llc to locate why the drain pan is overflowing with water. water should never be in the drain pan.
Low Refrigerant Levels
Refrigerant is the fluid that absorbs heat from your home and releases it outside. If your system is low on refrigerant, it can’t cool effectively. Low refrigerant usually indicates a leak somewhere in the system. Warning signs: Your AC runs constantly but doesn’t reach the set temperature,you hear hissing sounds near the outdoor unit, or you open up your air handler and see that the coil is frozen over. The fix: Call Vandys LLC for a diagnostic. We’ll locate the leak, repair it, and recharge your system. This typically costs $700-$1900 depending on the repair needed.
Frozen Evaporator Coils
This is a major problem in Alabama’s humid climate. When humidity is high and airflow is restricted, the evaporator coil (inside your home) can freeze over. A frozen coil looks like ice buildup on the indoor unit and completely blocks cooling. Why it happens: Low refrigerant, dirty filter, or restricted airflow causes the coil temperature to drop below freezing. The fix: Turn off your AC immediately to prevent compressor damage.
Clogged Outdoor Condenser Unit
Your outdoor condenser unit needs clear airflow to release heat. If it’s covered in dirt, leaves, or debris—common in North Alabama—it can’t function properly. The fix: Turn off your system and carefully clean the outdoor unit with a garden hose. Remove leaves, sticks, and debris. Maintain at least 2 feet of clearance around the unit. If the fins are bent, call Vandys LLC for professional cleaning and repair.
Faulty Compressor or Capacitor
The compressor is your AC’s “heart”—it pumps refrigerant through the system. If it fails, your AC won’t cool at all. A capacitor is an electrical component that starts the compressor. If the capacitor fails, the compressor won’t start. Signs of failure: AC won’t turn on, makes humming sounds but doesn’t cool, or trips your circuit breaker. The fix: A capacitor replacement costs $215. A compressor replacement is more expensive and usually indicates it’s time to replace the entire system. Call Vandys LLC for diagnosis.
Thermostat Problems
Sometimes the problem isn’t your AC—it’s your thermostat. If the thermostat is set incorrectly, has dead batteries, or is malfunctioning, your AC won’t cool properly. The fix: Check that your thermostat is set to “cool” mode and the temperature is set lower than your current room temperature. Replace batteries if needed. If it still doesn’t work, call Vandys LLC for a $110 diagnostic.
Local Pricing for Athens & Huntsville
At Vandys LLC, we diagnose and fix cooling problems quickly:
- Service call fee: $110 (diagnostic)
- Capacitor replacement: $215
- Motor repair: $700-$900
- Emergency weekend service: $175 additional fee
- Maintenance contract: $189/year (prevents many cooling problems)
When to Call Vandys LLC
If your AC isn’t cooling and you’ve checked the filter and thermostat, call us immediately. Don’t wait—running a broken AC can damage the compressor and turn a $215 repair into a $5,000+ replacement. We’re available 7am-6pm daily and 24/7 for emergencies.
Contact Vandys LLC
Phone: (256) 225-7311
Service Areas: Athens, Huntsville, Harvest, Madison, Decatur, New Market, Owens Crossings
Hours: 7am-6pm Monday-Sunday
Emergency Service: Available 24/7
Financing: 0% APR for 12 months on repairs over $2,000