You return home after a busy, stressful, and hot summer day but instead of being greeted by cool, comfortable air you walk into a humid, stifling home. What gives?
When your central AC system isn't blowing cold air, it is not only a huge inconvenience, but it can also make life down-right miserable, especially during peak summer heat. Understanding the common reasons behind this issue can help you determine whether you can fix it yourself or need to call the pros at Blau Sudden Service.
Here are six reasons why your central AC might not be blowing cold air and guidance on when to seek professional help.
1. Thermostat Issues
Your thermostat controls the temperature settings of your AC unit. If it's not set correctly, the AC might not blow cold air. Ensure the thermostat is set to "cool" and that the temperature is set lower than the current room temperature. If the thermostat is unresponsive or shows incorrect readings, replacing the batteries or recalibrating it might help.
2. Dirty Air Filters
Air filters play a crucial role in maintaining airflow through the system. If the filters are clogged with dust and debris, airflow can be restricted, causing the system to struggle to cool your home. Check and replace the air filters if they appear dirty. Regularly changing the filters, typically every 1-3 months, can prevent this issue.
3. Refrigerant Issues
Refrigerant is essential for cooling the air in your AC system. Low refrigerant levels, often due to leaks, can result in the system not blowing cold air. Signs of low refrigerant include hissing sounds, ice on the refrigerant lines, or the AC blowing warm air. Refrigerant issues should only be handled by a professional.
4. Dirty Condenser Coils
The outdoor unit, or condenser, plays a key role in dissipating heat from your home. If the coils are covered in dirt and debris, the system’s efficiency drops, and it might fail to blow cold air. Regularly cleaning the condenser coils can enhance your system's performance. If you’re unsure how to clean them, a professional can help.
5. Faulty Compressor
The compressor is the heart of your AC system, responsible for circulating refrigerant. If it’s not functioning correctly, the system can’t cool your home. Signs of a failing compressor include strange noises, the unit not starting, or the breaker tripping frequently. Compressor issues typically require professional repair or replacement.
6. Blocked or Leaky Ducts
Air ducts distribute cool air throughout your home. If they are blocked or have leaks, the cool air can escape or be obstructed, resulting in reduced cooling efficiency. Inspecting and sealing ducts can improve airflow and cooling performance. Ductwork issues often need professional assessment and repair.
When to Call Blau Sudden Service
While some issues can be resolved with simple troubleshooting, others require professional expertise. If you've done all the trouble-shooting you can to no avail, it’s time to call Blau Sudden Service to help to ensure your home stays cool and comfortable all summer long.