Not everyone is an expert on appliances and household technology. You know how to use it, and how to make it work for you. You also know when something isn’t working right.

But do you know the AC noises you should be listening for? You may not know how to fix your AC, but there are sounds that can tell you when it’s time to hire help.

Tell-Tale AC Noises

Listen for these loud AC noises. When in doubt, call an expert.

1. Bubbling or Gurgle Sounds

The bubbling sound of water might be relaxing when it’s coming from a fountain. What isn’t calming about that noise is when it’s coming from your air conditioning unit. What do these weird noises mean?

One cause of bubbling or gurgling in your AC could be a refrigerant leak. You should call a professional to take a look for you.

2. Internal Clicking Noises

When AC units turn on and off, they make some sort of clicking noise. That’s a normal sound. What isn’t normal is a continuous clicking sound.

If it’s clicking, and the AC won’t turn on, it could mean there’s a problem the thermostat. It could also be electrical. If the clicking is persistent while the AC is on, there might be something stuck in the fan.

3. A Banging Noise Coming From the AC

When your AC start making loud, banging noises, it can be alarming. Once you’ve found out where the sound is from, it’s time to figure out what it is.

Loud banging isn’t usual for air conditioning units. It could be an air compressor noise. Meaning, something could be loose or damaged with the air compressor. It’s possible that you’ll need to replace the compressor.

4. Rattling Sounds Inside the AC Unit

This sound can be very annoying at times. It’s also the first sign there could be something wrong with the AC, so don’t ignore it. Banging noises was a sign the compressor needs replaced. Rattling sounds are another sign.

Check the fans to see if they’re working. If there’s rattling, it could mean they need re-balancing.

5. Persistent Buzzing Coming from the Air Conditioner

The buzzing you hear coming from the AC likely isn’t from bees. You’re likely hearing the result of any of these common problems:

  • Loose fan blades
  • Dirty condenser coil
  • Loose parts
  • Loose fan motor
  • Possible debris

Some of these things are DIY friendly. Most of them should be left to a professional to determine.

6. A Screaming Sound

A screaming noise coming from your AC unit is only normal when it’s a new unit. Even then, the sound shouldn’t last longer than a few seconds after it’s turned on. If this noise persists, shut it off and call a professional to look at it.

More Air Conditioning Information

Most AC noises are usual. You shouldn’t worry every time you hear a sound coming from your air conditioner. Though, you should never ignore any of these sounds listed above. If you’re worried about the noises your AC is making, call R&R Heating and Air. Air conditioning repair is our specialty.

Check out our blog for more common air conditioning problems.