Why Did My AC Stop Working Suddenly? | McKinney, TX

Common Issues, DIY Checks, and Maintenance Benefits

Experiencing a sudden AC malfunction in the middle of a scorching Texas summer can be incredibly frustrating. Understanding the potential reasons behind these issues can help you diagnose problems early or seek professional help in McKinney, TX promptly.

Common Reasons Your AC Unit Isn’t Working

1. Thermostat Settings: Often overlooked, incorrect thermostat settings can be the culprit. If your thermostat is set to “fan” or “on” instead of “auto,” your AC may only circulate air without cooling it. Easily rectify this by adjusting the setting to “auto” to see if it resolves the issue.
2. Circuit Breaker Tripped: Your AC unit’s circuit breaker might trip due to electrical overload, especially during peak usage times. Locate the breaker box, find the AC unit’s circuit, and reset it from “off” to “on” position to restore power to your unit.
3. Dirty or Clogged Filters: A dirty air filter restricts airflow, reducing efficiency and potentially causing the evaporator coil to freeze up. Change your filter regularly—monthly if you have pets or allergies—to ensure optimal performance.
4. Exterior Unit Maintenance: The outdoor AC unit’s condenser coil can accumulate dirt and debris, hindering heat transfer and efficiency. Professional cleaning and maintenance annually can prevent this issue.
5. Low Refrigerant Levels: Insufficient refrigerant (coolant) due to leaks or inadequate initial installation can prevent your AC from cooling effectively. Only certified technicians should handle refrigerant-related repairs and refills.
6. Float Switch Issues: A clogged drain line can trigger the float switch, shutting off your AC to prevent water damage. Clearing the drain line can resolve this problem.
7. Compressor Problems: The compressor is crucial for circulating refrigerant through your AC system. Issues with the compressor often require professional diagnosis and repair to restore cooling efficiency

Things to Check if Your Air Conditioner Is Not Cooling

1. Thermostat:
   • Ensure your thermostat is set to “Cool” mode and the temperature is set lower than the current room temperature.
   • If the thermostat display is blank, check for batteries (if applicable) or power supply issues.
   • Verify that the thermostat settings are correct to ensure the AC unit engages when needed.
2. Air Filter:
   • Dirty air filters can restrict airflow, causing the evaporator coil to freeze. Replace dirty filters to improve airflow and allow the coil to defrost.
   • Turn off the AC unit before replacing the filter to avoid damage and ensure proper operation afterward.
3. Breaker Box:
   • Check the breaker box for tripped breakers. Reset any tripped breakers labeled for the AC unit to restore power.
   • If breakers trip repeatedly, it may indicate an electrical issue requiring professional attention.
4. Outdoor Unit:
   • Clear debris such as leaves and branches from around the outdoor unit to ensure adequate airflow.
   • Inspect the outdoor coil for dirt or blockages that can hinder heat transfer. Clean if necessary to improve efficiency.
5. Condensate Drain Line:
   • Check the condensate drain line for clogs, which can cause water backup and system shutdown.
   • Regularly clean the drain line to prevent algae and mold growth, ensuring proper drainage.
6. Refrigerant Levels:
   • Low refrigerant levels can prevent the AC from cooling effectively. Contact a professional to check for leaks and recharge refrigerant if needed.
   • Refrigerant leaks require specialized equipment and should be handled by licensed HVAC technicians.
7. Ductwork and Vents:
   • Inspect ductwork for leaks or blockages that can reduce airflow to different rooms.
   • Ensure all vents are open and unobstructed to allow for proper air circulation throughout the house.
8. System Age and Maintenance:
   • Consider the age of your AC system and its maintenance history. Older systems may require more frequent inspections and repairs.
   • Schedule regular maintenance with a qualified HVAC technician to keep your AC running efficiently and identify potential issues early.

Benefits of Regular Maintenance

Regular maintenance is essential to ensure your HVAC systems operate efficiently and maintain their warranties. At Quigley HVAC, we offer comprehensive maintenance plans designed to keep your systems in top condition year-round.

Benefits of our maintenance plans include:

• Two Free Visits a Year: Our plans cover two annual visits to inspect and tune-up your HVAC systems.
• Comprehensive Services: Services included in our maintenance plans encompass coil cleaning, refrigerant checks, electrical inspections, and more, ensuring peak performance and efficiency.
• Expert Technicians: Our skilled technicians are trained to identify and address potential issues before they become costly repairs.
• Warranty Maintenance: Regular maintenance helps uphold manufacturer warranties, protecting your investment in HVAC equipment.
• Peace of Mind: With regular maintenance, you can rest assured that your systems will operate reliably and efficiently throughout the year.

Explore more details about our maintenance plans on our maintenance page.

In addition to maintenance, Quigley HVAC specializes in:

• New Residential and Commercial Installation: Tailored installation services to meet your specific needs, ensuring optimal performance and efficiency from day one.

Count on Quigley HVAC for all your HVAC needs, including 24/7 emergency services. Take advantage of our exclusivemoney-saving coupons, flexible financing options, and comprehensive warranty information. Contact us today to learn more about our maintenance plans and schedule your free estimate. Keep your home or business comfortable with reliable HVAC services from Quigley HVAC.