Air conditioning systems undergo a serious workout every summer in the Elizabethtown, KY, region, and compressor malfunction is one of the most common repair needs property owners face.
One of the most frequent questions we field at Air Support Heating and Cooling is, “Why is my AC compressor overheating and shutting off?”
Discover information on compressor malfunctions from the most qualified HVAC company in Elizabethtown, KY.
Common Causes of Air Conditioner Compressor Overheating
Don’t keep asking, “Why is my AC compressor overheating and shutting off?” Here are some of the most common reasons, from component failures to maintenance issues.
Blocked Airflow and Clogged Air Filters
Blocked airflow is one of the leading causes of compressor overheating and failure. This is most often caused by clogged air filters. As filters pick up dust and particles, they restrict airflow to the evaporator coils and force the entire unit to work under greater stress to circulate air.
This leads to compressor overheating and shutdown.
Low Refrigerant Levels
Your air conditioner cannot function correctly without adequate refrigerant. Low refrigerant levels also cause the compressor to work much harder than it should, often leading to overheating. The system’s coils and refrigerant lines are a closed system, and even a tiny leak can cause this problem. This issue also causes inefficient or nonexistent cooling.
Dirty Condenser Coils
“Why is my AC compressor overheating and shutting off?” Another common cause is dirty condenser coils. Condenser coils are part of the system’s outside unit. They release heat and excess moisture absorbed inside through the evaporator coils.
When condenser coils become blocked by dirt or debris, the insulating effect retains heat in the coils. This causes undue stress on the system’s compressor.
Fan Motor Failure
The fan motor is also inside the outside unit. Its essential function is operating the large fan that forces heat from the condenser coils. When this motor fails, heat can build up rapidly and can cause the compressor to overheat.
You should have this breakdown addressed immediately, as extreme heating can sometimes quickly damage multiple components beyond repair.
High Voltage Issues
Electrical problems, including high voltage issues, can also lead to compressor overheating.
Loose connections, faulty wiring, or issues with the air conditioner’s capacitor can cause irregular voltage. This stresses the compressor and can cause frequent on/off cycling, often leading to substantial damage. Property owners should never take on electrical issues themselves because of the immense electrocution hazard.
Additional Environmental Factors to Consider in Elizabethtown, KY
If you’ve been asking, “Why is my AC compressor overheating and shutting off?” it may be the local climate. The hot, humid Kentucky summer months place additional stress on air conditioning systems.
Poor Ventilation and Blocked Airflow Around the Unit
Every air conditioner requires unrestrained and open airflow to function. If your outdoor unit sits in a cramped space or has excess vegetation or debris restricting airflow, it cannot expel heat as designed. This restriction often leads to overheating and compressor failure.
Extended Use in High Temperatures
Over time, extended use of a cooling system can lead to excessive wear and tear on the compressor, which can lead to overheating. The best form of preventative care is regular professional HVAC maintenance that helps identify issues early before they lead to system failure.
How To Prevent Your AC Compressor from Overheating
The most important steps to take to avoid compressor overheating and malfunction include:
- Regular maintenance. Schedule at least annual regular maintenance with a trusted HVAC service provider to detect and repair issues before they lead to system failure.
- Check and replace air filters. During summer, check air filters at least once per month and replace or clean filters at least every 90 days.
- Clean condenser coils. An HVAC professional should only clean the coils using the proper methods and equipment. This cleaning is typically part of regular maintenance.
- Monitor refrigerant levels. An HVAC professional can check refrigerant levels during regular maintenance service to detect leaks and make timely repairs.
- Ensure proper ventilation. Keep grass and vegetation trimmed around the outdoor unit and make sure no debris blocks airflow.
Call Air Support Heating and Cooling for Expert HVAC Services
If you’re asking, “Why is my AC compressor overheating and shutting off?” or, “Does a new HVAC system increase home value?” or any other heating and cooling question, the experienced experts and certified technicians at Air Support Heating and Cooling are ready to help.
If you’re dealing with compressor issues or want to prevent future problems, call Air Support Heating and Cooling to schedule service and discuss your HVAC needs in Elizabethtown, KY, or around the region.
Author BIO:
Zach Jones
Owner of Air Support Heating and Cooling, an HVAC provider in Louisville, Kentucky. Jones has a background as a sales consultant in the financial services industry.