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Why Is My A/C Making Weird Noises?

June 4th, 2021 by Emily Mixter

Why Is My AC Making Weird Noises

Having an air conditioning unit that works well in the summertime is a must to keep your family comfortable. While you may change your HVAC filter every three months and have your air conditioning unit serviced each year by an HVAC professional, that can’t stop every problem from happening. If you start to notice a weird noise coming from your air conditioning unit, it’s best to locate the problem sooner rather than later.

1. Clicking

When your HVAC unit starts up or shuts down, you’ll hear a familiar clicking noise. That’s a completely normal noise to hear. However, if you hear a clicking noise when the unit is running, it could mean that you’re dealing with a defective thermostat. It’s advisable to contact an HVAC professional to evaluate this electrical malfunction of your air conditioning unit.

2. Pulsing

It’s completely natural to hear a low-pitched pulsing noise from your air conditioning unit. However, if the noise is louder than normal, it’s a likely indication that there’s a loose part inside of your air conditioning system. Some common culprits of this noise include loose fan blades and panel covers. If you can’t tighten the loose air conditioning part to remedy the loud pulsing noise, it’s best to contact an HVAC professional to assist you.

3. Rattling

Another distinct noise that can alert any HVAC homeowner of a problem is a rattling noise. This typically means that there is debris clogging your system. It’s best to turn it off and clean out any loose debris. If the noise is still present when you turn your air conditioning unit back on, it’s time to call in an HVAC professional to help.

4. Squealing

Another common air conditioning unit noise that indicates a problem is squealing. This is typically a result of a fan motor going bad. You should have the noise evaluated by an HVAC professional now. This way, they can replace the fan motor, if necessary, before it goes out in the middle of the summertime heat.

5. Humming

If you’re starting to notice a humming noise coming from your air conditioning unit, it’s an indication that something is likely loose. Loose parts or piping can cause vibrations inside the air conditioning unit. It’s best to have this humming noise evaluated by an HVAC professional sooner rather than later. The longer you let a loose part go, the more costly it’s going to be to replace in the future, as it can damage other parts of your HVAC system.

6. Banging

One of the scariest noises that your air conditioning unit can make is a banging noise. When this happens, it’s likely that one of the parts inside of your HVAC system broke or is extremely loose. You should immediately turn off your air conditioning unit and look for any out-of-place HVAC parts. If you’re unfamiliar with the inner workings of an air conditioning unit, it’s probably best to call in your local HVAC professional to evaluate the noise.

7. Screaming

One very annoying noise that your HVAC system can make is a high-pitched scream. This screaming noise is likely caused by a refrigerant leak in your HVAC system. It’s important to note that refrigerant can be dangerous to your respiratory health. If you start to hear a distinct high-pitched screaming noise from your HVAC unit, it’s time to turn it off. Immediately call in an HVAC professional to evaluate the situation with your air conditioning unit.

Call An HVAC Professional Today

If you’re currently experiencing a weird noise coming from your air conditioning system, it’s time to call in an HVAC professional. Our HVAC professional can evaluate the source of the problem and fix it so that your family can get back to enjoying all of the comforts that air conditioning offers during the scorching hot summer months.

Resources

https://www.ahs.com/home-matters/repair-maintenance/what-ac-noises-mean/
https://yourairexperts.com/blog/why-air-conditioner-making-weird-noise#:~:text=If%20you%20hear%20loud%20buzzing,leaks%2C%20or%20a%20malfunctioning%20compressor.