Skip navigation


Serving Staten Island's Heating and A/C needs since 1950


6 Sounds That Mean It’s Time for AC Repair


It can be very alarming if your air conditioner begins to make unusual sounds. You know that something is wrong, you just don’t know what. But we are here to help. You can keep reading to learn about six sounds that can indicate something is wrong with your AC.

Then, give us a call for an air conditioning repair in Staten Island, NY. No matter what the cause of an unusual sound is, our team can help you troubleshoot the issue and make sure that your AC is in great condition without risk of additional damage. 

Bubbling or Gurgling

If you hear a bubbling or gurgling sound coming from your AC, that’s a good indication that you have a refrigerant leak. Because the refrigerant is liquid in a portion of the line, it will make these sounds as it escapes through and leaks out.

A refrigerant leak can have negative impacts on how your air conditioner is able to cool your home. But it is also dangerous for your family’s health. Breathing in refrigerant can cause nausea, vomiting, and other illness symptoms. 


If you have a leak in your refrigerant line where the refrigerant is in gas form, it may make a whistling sound instead of bubbling or gurgling. But whistling can also be an indication that you have a broken seal somewhere in the AC system and cooled air is escaping before it reaches the walls of your home. 

Running Water

First, let’s say that it is completely normal to hear water running through your air conditioner from time to time. There is a condensate drain line that collects moisture and drains the water outside of your home. But you shouldn’t hear sounds of running water that are too loud, or sounds that are happening all the time. If you do, this condensate drain line may have a clog and be leaking inside instead of draining out of your home.


If you hear a screeching sound, that indicates that you have a fan or a belt inside of your air conditioner that is wearing down. When you hear screeching, you should turn your air conditioner off completely to prevent any additional damage. Then give us a call to come out and fix the problem. 


Usually, a banging sound can be attributed to the air compressor inside of your air conditioner. If it begins to bang, it may be shaking around and knocking against the sides. Similar to screeching, you want to turn your AC off right away to prevent any additional damage. While it’s possible that we can make repairs to your compressor, it’s equally possible that the part needs to be replaced when this happens.


It’s normal to hear your air conditioner hum, but if that humming gets overtaken by a buzzing sound, it’s a problem. Buzzing can indicate that you have a fan blade that is bent or loose, or a component is loose and vibrating against another component to produce a buzzing noise. 

Serving Staten Island’s Heating and A/C needs since 1955. Contact the Bob Mims team to schedule an appointment for your AC service today!

Comments are closed.