Air conditioning is crucial for keeping your house cool when the heat is prevalent. The appliance runs in cooling cycles to achieve optimum temperatures. However, if the unit malfunctions, it may run in short bursts with premature cooling cycles. This will likely result in an uncomfortable indoor atmosphere since the system does not reach the set temperature. Additionally, the unit will wear down faster due to hard starting. Therefore, you need to engage an AC repair technician to assess your unit and fix it to prevent premature failure. The following are four causes of your AC short cycling:
Low Refrigerant Levels
Your AC utilizes refrigerant as a medium for heat transfer. The refrigerant runs in a closed loop, absorbing heat in the air handler and dispensing it outdoors. Thus, the refrigerant does not deplete with use, meaning that low levels indicate a leak. This problem could be due to copper lines deteriorating and becoming loose. Alternatively, the line set may degrade from formic acid corrosion, leaking the coolant. Regardless of the underlying cause, your unit will cycle on and off intermittently as the compressor overheats.
Blocked Air Filters
AC air filters trap dirt, dust, pet dander, and other airborne particulates, ensuring clean air circulation. Over time, the filters may clog with contaminants, restricting airflow within the system. This may result in the unit straining to draw sufficient air for cooling, causing the compressor to overheat. Consequently, as a safety measure, the AC will turn off before the cycle ends. To address this, it is imperative that you hire an AC repair professional to clean your air filters. If the components are disposable, the contractor will replace them, ensuring proper airflow.
Frozen Evaporator Coil
The evaporator coil facilitates heat transfer between the refrigerant and warm air. However, if dirt collects on the coil due to inactivity, it may cause the coil to ice up. This is because dirt build-up acts as insulation, causing the coil to become exceedingly cold as the refrigerant flows. On the other hand, a leak in the line set may result in the refrigerant expanding, causing low pressure in the system. As a result, the system will work too hard and overheat, leading to short cycling.
Poor Thermostat Placement
Your thermostat displays the room temperature, allowing you to adjust it to the desired level. As such, if you place the thermostat close to a heat-emitting source, the positioning may cause the system to malfunction. For instance, a thermostat receiving direct sunlight will erroneously detect the temperatures of that specific section as that of your residence. Consequently, the AC will turn off and on irregularly without attaining the desired temperature.
Short cycling exerts undue pressure on the appliance components, shortening the system's service life. Schedule regular tune-ups with an air conditioning repair contractor to inspect your unit and ensure it operates at peak performance.