Your air conditioning system relies on several key components to deliver cool, comfortable air throughout your home and one of the most important is the compressor. Often referred to as the “heart” of the air conditioner, the compressor pumps refrigerant through the system, enabling the entire cooling process. If the compressor goes bad, your air conditioner simply can’t do its job. But how do you know if your air conditioner compressor is failing? Monterey Peninsula Sheet Metal & Heating would like to walk you through the most common signs of a bad compressor and what to do about it.
What Does the Air Conditioner Compressor Do?
The compressor is located in the outdoor condenser unit of your HVAC system. Its main job is to compress the refrigerant, increasing its pressure and temperature before it moves through the condenser coils. This process is essential for releasing heat outdoors and cooling the air indoors. When the compressor is bad or failing, the entire system can lose efficiency or stop working altogether.
Signs Your Air Conditioner Compressor Might Be Bad
Warm Air Blowing from Vents: One of the first and most obvious signs of a compressor issue is your air conditioner running but only blowing warm or lukewarm air. If the refrigerant is not circulating properly due to a faulty compressor, the system can’t remove heat from your home.
AC System Won’t Turn On: If your air conditioner unit won’t start at all even though the thermostat is working and power is connected it could be due to a seized compressor that has completely failed.
Strange Noises from the Outdoor AC Unit: If you hear clicking, rattling, buzzing, or grinding sounds coming from the outdoor condenser unit, the compressor or its motor may be wearing out or struggling to operate. These noises can indicate worn internal components, loose parts, or electrical issues inside the compressor.
Circuit Breaker Keeps Tripping: An air conditioner compressor that is overheating or drawing too much power may repeatedly trip the circuit breaker. This is a red flag that something’s wrong and should not be ignored.
Vibrating or Shaking AC Unit on Startup: When the outdoor unit vibrates heavily or shakes during startup, this is known as “hard starting” a sign that the compressor is struggling to engage and may be on its last legs.
Refrigerant Leaks: While not always a sign of compressor failure on its own, refrigerant leaks can lead to compressor damage if left unchecked. If you notice hissing sounds, frozen coils, or reduced cooling performance, have the system checked immediately.
What Should You Do If You Suspect a Bad AC Compressor
Turn Off Your AC System: Continuing to run your air conditioner with a faulty compressor can cause further damage.
Schedule a Professional AC Inspection: Only a certified HVAC technician can properly diagnose compressor failure. They will check refrigerant levels, test electrical components, and assess whether the compressor can be repaired or must be replaced.
Consider Your Options: Depending on your system’s age and condition, replacing the compressor might be cost-effective but in some cases, especially with older units, a full air conditioner system replacement may make more financial sense.
Emergency AC Repair, Maintenance, Installation & More in Carmel, Pebble Beach, Seaside & Greater Monterey, California
If you are noticing any of the signs don’t wait for a full system breakdown. Contact Monterey Peninsula Sheet Metal & Heating and schedule our services today.
