Summer heat means your air conditioner becomes your best friend, keeping your home cool and comfortable. However, many homeowners experience common AC problems that disrupt comfort and efficiency.
Many issues have simple DIY fixes, but others require the expertise of a professional HVAC technician. Understanding these common problems, troubleshooting tips, and when to call a pro can save you time, money, and stress this summer.
1. Thermostat Not Working or Incorrect Temperature Reading
Your thermostat controls your AC, so if it malfunctions, the whole system suffers.
DIY Tip: Check and replace the thermostat batteries if it uses them. Reset the thermostat by turning it off and on. Make sure it’s set to “cool” and the temperature is lower than the current room temperature.
When to Call a Professional: If your thermostat is unresponsive, the display is blank, or it consistently gives inaccurate readings even after battery replacement and reset, it may need recalibration or replacement by a member of our team.
2. Weak or Insufficient Airflow
Low airflow from your vents can make your home feel warmer than it should.
DIY Tip: Check and replace your air filters regularly – dirty filters restrict airflow and force your AC to work harder. Ensure that all supply vents are fully open and unblocked by furniture or curtains.
When to Call a Professional: If changing filters and opening vents doesn’t improve airflow, the problem might be with your blower motor, duct leaks, or a failing compressor, requiring professional diagnosis.
3. Strange Noises from Your AC Unit
Unusual sounds like banging, squealing, or rattling are warning signs.
DIY Tip: Remove debris like sticks or leaves near the outdoor condenser unit. Tighten any loose screws on accessible panels.
When to Call a Professional: Persistent banging, grinding, or squealing noises often indicate mechanical problems such as motor issues or loose internal parts. One of our trained technicians will inspect and repair these promptly to avoid costly breakdowns.
4. AC Not Cooling Properly
If your system runs but fails to cool your home effectively, it could indicate several issues.
DIY Tip: Check your air filter and thermostat settings. Make sure doors and windows are closed to prevent cool air from escaping.
When to Call a Professional: Persistent lack of cooling may be due to refrigerant leaks, compressor failure, or electrical issues. Professionals can safely handle refrigerant and diagnose complex problems.
5. Water Leaks or Excess Moisture
Water pooling around your AC unit or indoor drip pans can signal drainage problems.
DIY Tip: Inspect and clean the condensate drain line if accessible. Clear any visible blockages to prevent water buildup.
When to Call a Professional: Continuous leaks or water damage may indicate clogged or broken drain lines or frozen coils. Our team can safely clear blockages and repair damaged components.
6. Frequent Cycling On and Off
Your AC should run steadily rather than short cycling on and off repeatedly.
DIY Tip: Check thermostat placement – avoid direct sunlight or heat sources that cause false readings. Replace dirty air filters.
When to Call a Professional: Short cycling can signal refrigerant issues, electrical faults, or an oversized system. Only a licensed technician can diagnose and fix these problems safely.
JMS Air Conditioning and Heating has your back. Call us today to schedule an appointment for your AC system care in Glendale, CA!
