Well-maintained HVAC systems, whether in your home or office, should run softly and be reliable. The sounds you hear should be minimal as air pushes through the ductwork. But, if your employees or tenants have begun to complain about weird commercial HVAC noises, it could be a cause for concern and should be addressed immediately.

Causes of Strange Noises From Commercial HVAC Systems

It is essential that you attempt to locate the source of the sound as soon as you hear complaints about strange noises coming from the HVAC system in your office. You can easily narrow down the sound with some simple HVAC troubleshooting tips. For instance, if noises are being heard from the top-floor offices, they are likely coming from HVAC systems mounted on the roof. You may be able to narrow down the sounds to a loose part.

Either way, accurately determining where the noise is coming from will require the help of an HVAC professional.

Here are some sounds that you may hear when dealing with a commercial HVAC system:

Popping or sharp sounds: Any type of popping, boom, or sharp sound can point to a serious problem with your HVAC system due to the accumulation of gas within. The gas may either burn off or explode when the burners turn on. The cause may be a clogged or filthy burner. If the noises come from within the HVAC system, you should call a professional immediately.
Clicking noises: Anytime you hear a clicking noise, it could be due to a broken flame sensor or igniter.
Rattling noises: The cause of clanging or rattling noises could be caused by loose parts in the HVAC system or access doors that are not properly fastened.
Hissing sounds: If you are hearing hissing sounds from your commercial HVAC system, it may be caused by too much pressure in the compressor. You should turn off your system and contact a professional right away.
Bubbling noises: Bubbling sounds may indicate a refrigerant leak within your HVAC system. It may lead to noises that resemble hissing, bubbling, or spraying.
Squeaking sounds: Any squeaking or squealing sound could mean that the belts or other moving parts need lubrication. It could also mean that they need to be replaced.
Clicking noises: Clicking noises may result from the ductwork expanding as the air passes through it.
Whistling sounds: A broken seal, air leak, or unsecured connection may be to blame if you hear whistling sounds. Air leaks can waste a large amount of air if it is not repaired right away.