How Long Do AC Capacitors Last in Hurricane, WV?

Air conditioners rely on multiple components to remove indoor heat and distribute chilled air. Two of the primary parts are the start and run capacitors. Cooling systems can’t function without these parts, so how long do AC capacitors last?

Malfunctioning capacitors are a common reason people seek professional AC services in Hurricane, WV. Below, our experienced technicians explain what you should know about these vital cooling system components and their average lifespan.

What Are Air Conditioning Capacitors?

One of the key things to know about air conditioners is that while each component is necessary, some are more important than others. Capacitors are a prime example. 

These components are like batteries inside air conditioners because they store and release energy when the equipment runs. Start capacitors help fire up cooling units by generating electricity to trigger the motor and fan. They stop working once the air conditioners start running. 

Conversely, run capacitors keep the systems working until they generate enough conditioned air to match the temperature on the thermostat. Some units in Hurricane have single-stage capacitors to do both jobs instead of two separate components.

The Average Lifespan of Air Conditioner Capacitors in Hurricane

How long do AC capacitors last in Hurricane? The average lifespan is 10 to 20 years, but performance declines around year 12. However, multiple factors affect the longevity of these cooling system parts beyond natural wear and tear.

So, what kills AC capacitors before they reach the end of their lifespan? The factors that affect the component’s longevity include:

• Quality of parts: Sometimes, capacitors fail because they consist of poor-quality materials and can’t handle the demands of high-performance air conditioners. When replacing capacitors, it’s always best to opt for high-quality options. 
• Extreme temperatures: The dielectric material inside capacitors may degrade faster because it’s sensitive to high temperatures, so premature failure is common in places with hot summers, like Hurricane. 
• Overuse: The more you use your air conditioner, the more quickly its capacitors will likely fail. Routine HVAC maintenance can help minimize the effects of consistent equipment usage.
• Incorrect voltage: AC capacitor voltage drops and spikes can strain the component, potentially triggering premature failure. You’ll also experience air conditioning problems if you install a new capacitor with a voltage rating that doesn’t match your system’s needs. 

What Are the Signs of Bad AC Capacitors?

Knowing the answer to questions like “How long do AC capacitors last?” isn’t enough. To ensure your air conditioner doesn’t break down when you need it the most, you must recognize the warning signs of a failing capacitor. They include the following:

A Lack of Cool Air

Your air conditioner may stop generating cool air for several reasons. The air filter might be filthy and need a replacement, or the blower motor or thermostat could be faulty. The unit’s capacitors could also be failing. 

If replacing your HVAC filter and adjusting your thermostat settings don’t resolve the problem, it’s time to contact a local air conditioning technician. They can determine whether your equipment needs blower repairs or a new capacitor.

Strange Noises From the Air Conditioner

Although you’ll likely hear a soft hum throughout your house when your air conditioner runs, it shouldn’t be loud. If the humming noise increases or becomes an unfamiliar sound, it could be the result of a capacitor with an insufficient energy supply.

Sudden Stops at the Beginning of Cooling Cycles

Does your air conditioner stop almost as soon as it turns on? Its start capacitor may be failing. This problem is common for components that lack the energy to power cooling units. 

How To Test AC Capacitors for Performance Issues

The best way to test your system’s capacitor is by contacting an HVAC technician. They can use a multimeter to measure the components’ voltage, which helps determine how much energy they can store and release into your unit. If the voltage is too low, the technician can swap it for a new one.