A capacitor is a battery-like device that stores an electrical charge and releases it to start the motor. However, your capacitor may wear down due to constant charging and discharging cycles. In most cases, this reduces the system's efficiency as a defective capacitor requires more energy to run. Consequently, your unit will overwork, making it vulnerable to breakdowns. Since you do not want a premature system failure, you should contact an AC service specialist if you notice the signs discussed below.
The Unit Is Not Blowing Cold Air
If you notice warm air from the vents, your capacitor could be defective. You should know that when this component goes bad, it will not give the fan motor extra power to start and run. This may lead to heat retention in the condenser unit, causing it to overheat. As a result, you will experience weak airflow from the vents and an uncomfortable indoor atmosphere. If this is the case with your system, you need an air conditioning service expert to fix the capacitor for the blower motor to restore seamless operation.
Humming Noise from The Outdoor Unit
Your AC will hum when your turn it on, indicating a steady drive of the fan blades and motor. However, if the humming sound lingers, the capacitor could be experiencing a malfunction. This happens due to an electrical overload that blows the capacitor. In addition, an aging compressor will overwork the capacitor as it requires more energy to start. As a result, the capacitor may fail and cause a hard start or a disruptive operation.
Energy Bills Skyrocketing
When you notice an increase in electric bills without correlating to an increase in usage, the capacitor could be defective. This is due to the system overheating, causing the crucial component to bulge. Consequently, the fan motors and compressor will expend more energy to run, spiking your energy bills. You should know that failure to replace your capacitor can lead to system failure. This is because a failing component cannot sustain the unit's voltage rating.
Burning Smell from The Condenser Unit
If you notice an unpleasant smell from the outdoor unit, the capacitor could be the culprit. This happens due to an obstruction in the condenser unit, impeding the release of heat. As a result, the system will overwork, causing the motor to overheat. Eventually, the bearings will dry out and produce a burning smell. Therefore, you must keep your outdoor unit free from obstructions to aid proper ventilation.
As seen, a bad capacitor will strain the system, making it prone to breakdown. Thus, you should hire a technician to service your AC routinely and ensure each component is in good working order.
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