As part of Metro Boston, Framingham is a breathtakingly beautiful city and hub for business and adventure. However, the summer temperatures can soar into the 80s with high humidity levels, so if your cooling system has you wondering, “Why do HVAC capacitors fail?” call an expert immediately.
Having just one faulty AC unit component lowers cooling capacity and energy efficiency, leading to higher bills. Payscale notes Framingham has a 19% higher utility price than the U.S. average, so the last thing you want is to pay even more than before due to a busted unit. Below, our stellar company with an A+ BBB rating relays why capacitors fail and what to do about it to save on already pricy bills.
Why Does Your Framingham HVAC Unit Need a Capacitor?
Your system comprises a start capacitor and a run one (or a two-in-one dual system). The start capacitor stores an electrical charge from an outlet. Once your thermostat notices the indoor temperature rising and signals your unit to turn on, the capacitor sends a safe amount of electricity to the blower motor, jumpstarting it.
After the cooling cycle begins, the unit switches to the run capacitor that uses a lower voltage, just enough to maintain the compressor and fan’s functioning without burning as much energy.
If either or both fail, your unit won’t have enough electricity and will take longer to produce cool air. That leads to the system’s premature wear alongside frequent and costly repairs, higher bills, and a larger carbon footprint. Eventually, the system stops working altogether, leaving you helpless in Framingham’s hot summer.
Why Do Capacitors Fail in Framingham?
Now that you understand their importance, what causes a capacitor to fail?
Overworking and Heating Up
On average, air conditioner cooling cycles should last between 15 to 20 minutes, repeating two to three times per hour to reach and maintain your desired indoor climate. Long cycling means your unit surpasses these ranges, working longer than it should and causing all components (especially capacitors) to overwork. Overheating causes the capacitors to burn out quickly and fail prematurely.
If your unit is too small for your home, you’ll notice long cycling from the start and should call one of Framingham’s skilled HVAC technicians to resize your system with the appropriate BTU. You should also:
- Move your unit from a south or west-facing window with excessive sun to the north or east side or under some shade.
- Keep indoor temperatures cooler by sealing entry points and investing in window coverings (like energy-efficient cellular shades) so your Framingham home doesn’t quickly or easily heat up.
- Set your thermostat to 78 degrees when you’re home and higher when you’re away; the lower it’s set, the harder your system has to work to meet those requirements.
Surges from Framingham Storms and Blackouts
Another answer to “Why do HVAC capacitors fail?” is power surges. After all, if a little heat from overworking causes significant damage, imagine what an electrical shock can do.
Framingham has its share of electrical storms with dangerous lightning strikes. If one hits your home, affecting the wiring within, it can fry your unit’s entire electrical system since it’s connected to a household outlet. The capacitor burns out but this isn’t the only threat of a surge.
When the power returns after a blackout, it gives off a surge that also fries the system. Even on a smaller scale, if you trip your home’s circuit breaker, turning it back on causes a similar surge that electrocutes the system over time. So, invest in surge protectors to lessen your chances of this.
A Diminishing Lifespan
Like all things, your capacitor’s life eventually comes to an end. In some cases, that may be after a full lifespan of 15 to 20 years if your unit received proper care, like semi-annual maintenance and immediate repairs.
However, other factors, from worn-out motor bearings to any of the issues listed above, cause premature wear and tear, forcing the capacitor to work harder and diminish faster. If the capacitor is frequently malfunctioning, you’ll need a part or whole-unit replacement.
No One Knows Comfort Control Like Framingham’s Pros!
We often take indoor comfort for granted, especially since Framingham’s humid continental climate offers mild summers. However, when you notice unusual unit activity, from AC hissing sounds to leaks, reach out to our five-star team. Our specialized team accurately answers your questions, including “Why do HVAC capacitors fail in Framingham, MA?” so contact Pro Comfort Control at 508-684-5319 today!