Common Air Conditioner Problems

Among the most common a/c issues is inappropriate operation. If your air conditioning unit is on, make sure to close your home’s windows and outdoors doors.

For room air conditioning unit, separate the room or a group of connected spaces as much as possible from the rest of your home. For a list of common ac system issues and what to look for, take a look at our Energy Saver 101 infographic on home cooling.

Other typical issues with existing air conditioners arise from faulty installation, poor service procedures, and insufficient maintenance. Inappropriate installation of a central air conditioner can result in leaking ducts and low airflow. Many times, the refrigerant charge (the quantity of refrigerant in the system) does not match the producer’s requirements. If proper refrigerant charging is not carried out during setup, the performance and efficiency of the system suffers. Unqualified service professionals often cannot discover refrigerant charging issues or perhaps get worse existing issues by including refrigerant to a system that is already complete. Discover what to request for when employing a professional to keep your air conditioning system.

Air conditioner producers usually make rugged, high quality products. If your air conditioning unit fails, start by checking any fuses or circuit breakers. Let the system cool off for about 5 minutes before resetting any breakers. If a central air conditioner’s compressor stops on a hot day, the high-pressure limit switch might have tripped; reset it by pressing the button, situated in the compressor’s gain access to panel.


If your ac system is low on refrigerant, either it was undercharged at setup or it leaks. If it leaks, just including refrigerant is not a solution. A qualified service technician ought to repair any leak, test the repair work, and after that charge the system with the correct quantity of refrigerant. Keep in mind that the performance and efficiency of your air conditioning system is biggest when the refrigerant charge precisely matches the maker’s specification, and is neither undercharged nor overcharged. Refrigerant leakages can likewise be damaging to the environment.


If you enable filters and a/c coils to become unclean, the air conditioner will not work correctly, and the compressor or fans are likely to stop working prematurely.


The compressor and fan controls can wear, especially when the air conditioning system switches on and off regularly, as is common when a system is large. Because rust of wire and terminals is likewise an issue in numerous systems, electrical connections and contacts need to be inspected during a professional service call.


Room a/c unit feature a thermostat sensing unit, located behind the control board, which measures the temperature level of air entering into the evaporative coil. If the sensor is knocked out of position, the air conditioner might cycle constantly or behave erratically. The sensor should be near the coil but not touching it; adjust its position by thoroughly bending the wire that holds it in place.


When it’s humid outside, examine the condensate drain to make sure it isn’t clogged and is draining pipes correctly. Space a/c might not drain pipes correctly if not mounted level.