Most people expect their air conditioners to make a bit of noise when it’s on. But if a buzzing type of sound persists even after your air conditioning shuts off, it might be because a component isn’t working properly. Whether it’s a faulty motor or an erratic electrical connection, it’s worth checking out. Otherwise, your air conditioner might stop working entirely.
Contacting a professional technician is the best idea when your air conditioner is making noise, since they can quickly determine the source and start repairs. In the meantime, here’s some useful info about why your air conditioner might be noisy.
First, Find Where the Sound is Coming From
Tracing the sound back to the source can help the technician discover the possible causes. Your central air conditioning system is made up of two units. The outdoor unit vents the heat collected from your home and cools it down with the refrigerant. This cooler air is sent to the indoor air handler, which makes sure the conditioned air is sent into the ductwork. If the noise you’re hearing isn’t coming from either of these units, the problem might be found inside the ductwork itself.
If the sound is coming from the indoor unit: When noise is coming from the indoor unit, it can often be because there’s something wrong with the blower motor. A faulty electrical connection can cause the motor to make a buzzing sound regardless of if the air conditioner is on.
Occasionally, however, the noise comes from the condensate pump. This component helps drain excess moisture away from the rest of the AC system. It may continue to run after a cooling cycle is finished if there’s still moisture that needs to be removed.
If the sound is coming from the outdoor unit: Just like the indoor unit, the outdoor unit has a fan and motor. But instead of sending cool air into your ductwork, this fan is used to dissipate the heat collected from indoors. A bad connection could produce a similar buzzing sound, and since it’s outdoors, it can be a while before you notice it.
The outdoor unit also houses the relay switch, an important component for stabilizing the voltage that enters the system. When this part makes a sound, it might have failed and will have to be replaced.
There’s always a chance that a screw has come loose or a piece of debris has gotten wedged somewhere inside the system. This can happen to both the indoor and outdoor unit, and will produce a variety of noises depending on where the object is lodged. If this is the source of the irritating sound, you shouldn’t hear it for much longer after the AC shuts off. To make noise in the first place, it’d need to be close enough to something that could cause it to rattle against the unit housing.
These Noises Are Most Often Due to an Electrical Problem
You may have discovered that a lot of the potential sources of this unusual noise have something to do with electrical components or the connections themselves. Since these components won’t work without power, a malfunctioning electrical part is the most common reason you’ll hear something even when the air conditioner is off. After your technician has found where the sound is coming from, they’ll likely start checking components such as the relay switch and compressor, as well as all connections.
Even if you’ve located the source of your problem and think it’s a simple fix, it’s best to let a licensed and insured professional resolve electrical problems.
Leave Electrical Problems to the Pros
If your air conditioner’s electrical system is malfunctioning or damaged, hiring a professional is the right move. There are several reasons why:
Other Common AC Noises
Getting familiar with several other noises that can come from your air conditioner is a great idea. The next time something is wrong, you may be able to recognize it more quickly and call for professional service. A few other unusual noises include:
Call Stevenson Service Experts for Quiet, Comfortable Cooling
If something doesn’t sound right, don’t wait and see if it goes away by itself. The faster a professional technician can start repairs, the quicker things can be resolved. You’ll appreciate a quieter air conditioner and efficient cooling.
Request an appointment with the HVAC pros at Stevenson Service Experts today by giving us a call at 937-503-7896.
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