There’s A Squealing Noise When Your Air Conditioner Is Turned On?

Nobody likes it when their valuable appliances talk back to them. However, sometimes, even the best air conditioners start making noises. Such noises usually indicate that something is amiss. So, if you’ve been nervously asking yourself, “Why is my air conditioner squealing?” keep reading.

And if it’s a knocking noise that has you concerned, check out our article explaining why air conditioners make a knocking noise.

Reasons Your Air Conditioner Is Squealing

Every air conditioning unit needs proper care. And sometimes, when the air conditioner has issues, it can make a high-pitched squealing noise. Fortunately, there are a few common areas to check when you hear this strange sound but having an HVAC professional check your unit as soon as possible is essential. Doing this can help prevent further, more expensive repairs.

If you’re in the market for a new machine because you think your unit is beyond repair, read our comparison of Bryant vs Comfortmaker air conditioners.

Worn Out Fan Belt

Many fans in older units are powered by a belt attached to the blower motor. As humidity levels change, the belt expands and contracts. Eventually, the belt wears out, which can cause a loud squealing noise. Typically, replacing a worn or broken belt costs around $100-$200.

It’s important to note that AC units make noise regardless of mechanical problems. So if loud noise is a concern, you should buy the proper unit to minimize it. To that end, read our article comparing high-cool vs low-cool air conditioners.

Condensor Fan Bearings

Newer AC models use bearings instead of belts to power the fan. When they become worn out, they make a loud squealing or screaming noise. Unfortunately, when the bearings are bad, this usually indicates that the entire fan motor needs replacement, costing up to $700.

Low Airflow

Air conditioner noises, such as squealing, may also occur when the unit’s airflow is impeded. Impediments to the airflow can be anything from a dirty air filter to duct blockage to dirty evaporator coils. When the airflow is restricted, it can sometimes result in strange noises. Air filter replacements and coil cleanings are tasks that can be accomplished without professional help and are necessary to the overall health of any AC unit.