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Feb 25 2023

5 Strange HVAC System Noises That Shouldn't Be Ignored

The best way to keep your air conditioning system running smoothly is to know how to identify the sounds that may indicate a problem. You might hear a rattling or humming noise or a humming sound, and it can be tempting to ignore it and hope the problem goes away. But, you could end up with higher energy bills or a damaged air conditioner. At Rooter Hero Plumbing & Air, we provide professional HVAC services for local clients including air conditioning repair services. As an HVAC company, we enjoy helping our customers get the most from their systems, and we want the same for you as well. Keep reading to discover the five most common AC noises to watch out for.


Dripping is an easy-to-miss sound that can indicate a problem with your air conditioner. Turn off the system and call a technician to inspect it. Clogged or cracked drains can cause a buildup of debris, leading to excessive condensation and water damage to other parts of your home if the issue is not dealt with quickly.


Rattles are one of the most common noise issues in air conditioners. They usually occur when there is a loose screw or piece of metal, but it can also indicate a damaged compressor. This is a sign that your unit needs to be serviced.


Squealing and screeching sounds are typically caused by a failing belt or fan. If you hear this sound, it's important to have your air conditioning unit checked to make sure the belt and parts are in good shape so they don't cause further damage. This will help reduce repair costs in the future.


Blocked vents can create a whistling sound. To correct the problem, open up your system to allow air to pass through by limiting the number of closed vents. However, if the issue persists, you may need an inspection to ensure that your system isn't compromised by a more serious problem like escaping refrigerant or a failing compressor.


A gurgling or bubbling sound may indicate that your air conditioner needs more refrigerant. If so, it will become more difficult to cool your home, forcing the system to work harder to maintain the right temperature. It can also signal a leak in the system. Leaking refrigerant can put your health at risk. If you are concerned that this is the cause, contact an HVAC company as soon as possible and have them address the problem.

Do You Need an Air Conditioning Repair or Inspection?

Air conditioners are a critical component of your home's comfort, and they're also a major investment. If your air conditioner is making any of these strange noises, we recommend that you call a professional right away. The team at Rooter Hero Plumbing & Air is always ready to help. Contact our office for more information about our residential and commercial services or to schedule a time for your next air conditioning repair, inspection, replacement, or installation.

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