Choose Product
Identify Problem
03
Find Solutions

Air conditioner not cooling

To find just the right part, enter your model number.
We can help you find your model number right away.
Common solutions for: Air conditioner not cooling
Solution 1:
Air Filter
If the air filter is clogged, air cannot flow properly through the air conditioner. This greatly reduces the cooling capacity of the air conditioner. In addition, if the air filter is clogged, the eva...porator coils will frost over. To remove debris from the air filter, try cleaning the filter. If it is not possible to clean the air filter, replace it.
Required Part
Air Conditioner Air Filter
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS
Solution 2:
Condenser Coils are Dirty
The condenser coils dissipate the heat as the refrigerant passes through the coils. If the condenser coils are dirty, they won’t be able to dissipate the heat as effectively. As debris builds up on the coils, the air conditioner will become less efficient, causing the air conditioner to work harder to cool down. If the coils are significantly dirty, the air conditioner will not be able to maintain the proper temperature, and the compressor will run continuously in an attempt to cool the room. Check the condenser coils to determine if they are dirty. If the condenser coils are dirty, clean them.
Solution 3:
Compressor
The compressor might be defective. However, this is not usually the case. Before replacing the compressor, be sure to check more commonly defective components—particularly the overload protector and t...he compressor capacitor. If the compressor is defective, it should only be replaced by a licensed technician.
Required Part
Air Conditioner Compressor
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS
Solution 4:
Thermostat
The thermostat monitors the temperature of the air. When the air temperature rises above a set point, the thermostat activates a switch to provide power to the fan and compressor. If the thermostat is... defective, the thermostat may not cool properly. To determine if the thermostat is defective, set the air conditioner to cooling and then use a multimeter to test the thermostat for continuity. If the thermostat does not have continuity while the air conditioner is set to cooling, replace the thermostat. (Note: Some thermostats may also control a heater and, as a result, will have three terminals. Refer to your air conditioner’s wiring diagram for more information.)
Required Part
Air Conditioner Thermostat
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS
Solution 5:
Control Board
The control board regulates the voltage to the compressor and the fan motor. If the control board fails, some components will not function properly or will not work at all. Control boards are often mi...sdiagnosed; make sure to check more commonly defective parts first before replacing the control board.
Required Part
Air Conditioner Control Board
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS
Solution 6:
Main Control Board
The main control board regulates the voltage to the compressor and the fan motor. If the main control board fails, some components will not function properly or will not work at all. Main control boar...ds are often misdiagnosed; make sure to check more commonly defective parts first before replacing the main control board.
Required Part
Air Conditioner Main Control Board
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS
Solution 7:
Temperature Control Board
If the temperature control board is defective, the fan motor and compressor will not get power. Control boards are often misdiagnosed; make sure you check other air conditioner parts before replacing ...the temperature control board. If you are certain that all of the other components are working properly, replace the control board.
Required Part
Air Conditioner Temperature Control Board
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS
Solution 8:
Temperature Control Thermostat
The temperature control thermostat is a sensor which monitors the temperature of the air and activates a switch to provide power to the fan and compressor when the air temperature drops below a set po...int. If the thermostat isn’t working, the air conditioner will cool continuously or won’t cool at all. To determine if the temperature control thermostat is defective, use a multimeter to test it for continuity. If the thermostat does not have continuity, replace it. (Note: Some thermostats may also control a heater and, as a result, will have three terminals. Refer to your air conditioner’s wiring diagram for more information.)
Required Part
Air Conditioner Temperature Control Thermostat
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS
Solution 9:
Thermistor
The thermistor is a sensor connected to the control board that detects the temperature of the air. The resistance value of the thermistor changes in conjunction with the air temperature. If the air te...mperature rises, the resistance value will decrease. To determine if the thermistor is at fault, use a multimeter to test it for continuity. If the thermistor does not have continuity, or if the resistance of the thermistor does not change with a change in temperature, replace the thermistor. (To find specific temperature and resistance values, try checking your user’s manual.)
Required Part
Air Conditioner Thermistor
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS
Solution 10:
Run Capacitor
The run capacitor is connected to the compressor with electrical leads. If the run capacitor burns out, the compressor will not run. To determine if the run capacitor is burned out, test the capacitor... using a multimeter. If the capacitor does not have continuity, replace it.
Required Part
Air Conditioner Run Capacitor
Enter model number to search for the required part specific to your product
Browse our parts categories to select from a variety of parts for your product
SHOP PARTS