AC Not Working? Top 10 Common Air Conditioner Problems and DIY Tips

Restore Cool Comfort During Scorching Summer Days!

As the summer heat intensifies, few things are as frustrating as having an air conditioner that refuses to function properly. If you’ve ever found yourself exasperatedly asking, “Why is my AC not working?” or enduring sweltering temperatures while your AC unit fails to bring the relief that comes with cold air flowing, you’re certainly not alone.

We understand the discomfort and inconvenience a malfunctioning air conditioner can cause, especially during scorching summer days. But fear not, because today, we’re here to empower you with knowledge on the ten most common air conditioner problems homeowners frequently encounter and provide you with effective solutions to regain your cool oasis amidst the sometimes brutal Georgia summer heat! So, let’s take charge and ensure you can fully enjoy the rest of your summer without the hassle of a malfunctioning AC system!


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Importance of Regular Air Conditioning System Maintenance

Maintaining your air conditioning system regularly is not only essential for its longevity but also crucial for ensuring optimal performance during the red-hot summer months. Regular HVAC system maintenance plays a vital role in preventing some of the most common problems that can arise with cooling systems. Dust, debris, and dirt can accumulate within the unit over time, leading to clogged or dirty air filters and reduced airflow, which hampers its cooling efficiency. Additionally, wear and tear on components can occur with continuous use, increasing the likelihood of breakdowns, costly repairs, air conditioning service, or even the need for air conditioning installation or replacement.

By scheduling annual maintenance with a professional and trusted local heating and cooling company, you can reap numerous benefits that go beyond just avoiding inconveniences. During a routine maintenance visit, skilled heating and air conditioning technicians will thoroughly inspect and clean your HVAC system, identifying and addressing potential issues before they escalate. This proactive approach not only helps in preventing sudden breakdowns but also ensures that your HVAC system operates efficiently, saving you money on energy bills.


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Improve Poor Indoor Air Quality

Regular maintenance also aids in preserving indoor air quality. A well-maintained AC system filters out allergens, pollutants, and dust creating a safe and healthy environment for yourself and your family. Scheduling annual maintenance with a professional HVAC company is a smart decision, as it not only helps prevent common AC problems but also ensures that your cooling system operates efficiently, provides better indoor air quality, and extends its lifespan. So, don’t let the heat catch you off guard – take charge and prioritize the regular care of your air conditioning system to enjoy a cool and comfortable summer season.

AC Not Working? Here Are 10 Common Air Conditioner Problems and Troubleshooting Tips To Help!


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1. Insufficient Cooling or Not Cooling at All

Is your AC blowing warm air and not cooling your home as it should, or worse, not working at all? This problem could be attributed to various causes:

  • Clogged Air Filter: Dirty air filters restrict airflow, reducing cooling efficiency. Regularly clean or replace them to ensure optimal performance.
  • Thermostat Issues: A faulty thermostat may not accurately measure the temperature, leading to inadequate cooling. Calibrate or replace it, if needed. You may also want to check the batteries in your thermostat, a fix could be as simple as that!
  • Refrigerant Leak: Low refrigerant levels impede the cooling process. Detecting and fixing leaks is crucial, but leave refrigerant leaks and their handling to the professionals.


why is my ac not working

2. Uneven Cooling Throughout the Room

Experiencing hotspots in certain areas while others have cool air being distributed? Uneven cooling in homes is another common AC problem. Uneven cooling can result from:

  • Blocked Air Vents: Ensure that furniture or objects are not obstructing the air vents, hindering proper airflow, and causing temperature imbalances.
  • Duct Leaks: Leaky ducts can lead to cooled air escaping before reaching the desired areas. Seal any gaps or cracks in the ductwork to improve distribution.

3. AC Constantly Turning On and Off

Does your air conditioning unit have a mind of its own, cycling on and off frequently? This issue, known as short cycling, can have several origins:

  • Dirty Condenser Coils: Dust and debris on the condenser coil can hinder heat dissipation, forcing the system to work harder. Clean the coils regularly.
  • Oversized AC Unit: An AC unit too large for the space cools it too quickly, leading to frequent cycles. Ensure the system is appropriately sized.
  • Faulty AC Compressor: A inoperative AC compressor might be unable to maintain the desired temperature, causing it to turn on and off erratically.

4. Strange Noises Emanating from the AC

Is your AC suddenly making weird and disturbing noises? These sounds can indicate underlying issues:

  • Rattling or Clanking: Loose or broken components within the AC unit can cause rattling or clanking noises. Get them fixed promptly by a professional heating and air conditioning technician to avoid further damage.
  • Squealing or Screeching: High-pitched sounds may suggest a worn-out belt or motor bearings. Lubricate or replace these parts to silence the squeals.
  • Bubbling or Hissing: Refrigerant leaks can produce bubbling or hissing noises. Address leaks immediately and refill refrigerant with the help of a professional.

5. AC Emitting Unpleasant Odors

Is your central air conditioner spreading unpleasant odors throughout your living space? Identify the source of the smell and take the appropriate action:

  • Mold and Mildew: Moisture in the air conditioner can lead to mold and mildew growth. Clean the system thoroughly and consider using a dehumidifier.
  • Burning Smell: A burning odor may signal electrical issues. If this is the case, turn off the AC immediately and call a professional technician for inspection and repairs.


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6. Air Conditioner Not Blowing Cold Air

Is your AC unit blowing warm air when you expect cold air? Several culprits might be behind this issue:

  • Dirty Evaporator Coils: Dust and grime on the evaporator coils hinder heat absorption, resulting in warm air blowing. Clean the coils regularly.
  • Frozen Evaporator Coils: Restricted airflow or refrigerant leaks can cause the evaporator coils to freeze, preventing proper cooling.
  • Faulty AC Compressor: A malfunctioning AC compressor may not circulate refrigerant effectively, leading to warm air blowing.

7. Excessive Energy Consumption

Notice an alarming increase in your energy bills? Your AC’s energy consumption could be the reason:

  • Inefficient AC Unit: An outdated or inefficient AC system consumes more energy to cool your space. Consider upgrading to a newer, energy-efficient model.
  • Lack of Maintenance: As previously mentioned, regular maintenance and AC tune-ups are critical to ensure your AC operates at its peak efficiency. Clean the filters, coils, and other components as required.

8. AC Not Turning On

Is your air conditioner completely unresponsive, refusing to turn on? Don’t panic, as this could be due to:

  • Tripped Circuit Breaker: Check if the circuit breaker connected to your AC has tripped. Reset it and try turning on the air conditioner again.
  • Faulty Wiring: Damaged or faulty wiring can disrupt the power supply to your AC unit. Contact a professional electrician to inspect and repair the wiring.

9. Water Leakage from the AC

Is water pooling around your indoor or outdoor unit? This issue might be caused by:

  • Clogged Condensate Drain Line: A clogged drain line prevents proper water drainage. Unclog it or seek professional assistance.
  • Leaky Condensate Pan: A cracked or damaged condensate pan can lead to water leakage. Replace the pan to resolve the issue.


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10. AC Remote Control Malfunction

Is your AC unresponsive to remote commands? The problem could be related to:

  • Dead Batteries: Replace the remote control batteries and ensure they are inserted correctly.
  • Faulty Remote Control: If the remote is still not working, it might be damaged or malfunctioning. Consider getting a new remote.


Now that you’re well-versed in the most common reasons why your AC is not working and their DIY solutions, you can tackle any AC-related issues with confidence. Remember to perform regular maintenance and address problems promptly to keep your AC running smoothly and efficiently. Beat the heat and enjoy a cool and comfortable living space all summer long! If you reside in the Atlanta area, reach out to My Aire Heating and Cooling today for a hassle-free experience. We have two locations to serve you:

Atlanta/Decatur: 770-818-6095
McDonough Heating and Air Conditioning Repair: 770-290-8511

Contact us now to schedule your maintenance or air conditioner tune-up appointment and get a free quote on any AC problems you may be facing. Your comfort and peace of mind are just a call away!