A capacitor provides the initial energy burst your air conditioner needs to kick into action. Failed capacitors are among the most common reasons homeowners schedule air conditioning repair in Kingwood, TX.
How long do AC capacitors last? Learn what influences AC capacitor lifespan and how to tell whether this vital component needs replacement.
How AC Capacitors Work
The AC start capacitor is a cylindrical element that sits next to the compressor, fan motor, or contactor in the outdoor unit. It stores electrical energy and releases it when your AC system begins its active cooling cycle, enabling the motor to start. It’s only active during this initial phase until the motor reaches around 75% of its running speed.
Your HVAC system also uses a run capacitor. This unit keeps working throughout the AC cycle and helps the motor operate efficiently. It controls the voltage passing through the motor, protecting it from electrical current damage.
How Long Will a Capacitor Last in Kingwood, TX?
An AC capacitor may endure anywhere between five and twenty years, although many will fail after a decade or so. However, like any electrical component, it will eventually need replacement. The factors below will influence a capacitor’s lifespan.
Climate
When people ask, “How long do AC capacitors last?” they often aren’t aware of the role climate plays in a capacitor’s longevity. Electrical components tend to deteriorate faster in a hot and humid location like Kingwood, TX.
The Houston area gets plenty of rain, and humidity is high year-round. Moisture will make a capacitor’s connections and terminals corrode more quickly.
Hot summers strain capacitors as well. When temperatures are in the 90s, the capacitor’s dielectric material will degrade faster, which will eventually cause the unit to fail. Moreover, you probably run your AC constantly during the summer months, causing heavy wear and tear.
Finally, Kingwood sees many thunderstorms, especially in the spring and summer. Lightning can create power surges and damage capacitors.
Unit Quality
A high-quality capacitor will serve you longer, while an inferior unit may fail quickly. In Kingswood, TX, it’s critical to install capacitors designed to tolerate our area’s hot and humid climate.
You’ll want a unit with durable dielectric materials and a high voltage rating. Talk to your HVAC tech to make sure you have a resilient capacitor ready to withstand high heat, moisture, and electrical fluctuations.
HVAC Maintenance
Regular maintenance will boost your HVAC system’s overall longevity and energy efficiency. The capacitor is just one element HVAC techs will check and test during an annual tune-up.
The technician will inspect the capacitor, looking for suspicious signs like swelling, rust, or leaking fluid. If the capacitor seems in good shape, the tech will gently clean the terminals, reinforce any loose connections, and ensure the capacitor sits securely in the mounting bracket. All this will help your capacitor last longer.
In addition, an HVAC tune-up will take care of issues like clogged filters and dirty coils, which may cause overheating and capacitor damage.
At Crew Heating & Cooling, we offer a comprehensive annual maintenance plan for only $129. Our loyal members enjoy biannual HVAC inspections, discounted repairs, zero service fees, and many other perks.
Capacitor Failure Signs
Once you know the answer to “How long do AC capacitors last?” watch out for warning signs like:
- Strange humming or buzzing noises from the outdoor unit
- An AC unit that’s short-cycling or isn’t producing cold air
- A slow or inactive outdoor fan
- Burning smell from your AC
- Inexplicably high energy bills
Remember that while a failed capacitor is a common reason why an AC won’t work, other electrical components could also cause similar cooling system issues. Only a licensed HVAC tech can properly diagnose and fix the problem.
How Much Does It Cost To Replace a Worn-Out Capacitor?
Replacing a failed capacitor may cost anywhere from $100 to $400, depending on the capacitor type. While the unit itself is inexpensive, professional labor bumps up replacement costs.
Please never attempt to replace an AC capacitor unless you’re an HVAC pro. Doing so could be extremely dangerous and will also likely void your warranty.
Call Crew Heating & Cooling for Fast, Affordable HVAC Services in Kingwood, TX
Are you asking, “How long do AC capacitors last?” Does your HVAC system show the typical signs of a damaged AC capacitor? Call us at Crew Heating & Cooling. Our skilled technicians will get your cooling system back in shape or suggest a cost-effective upgrade. Book an appointment now.