There are many reasons your HVAC system may be making unusual noises. It is best to find out the cause as soon as possible to avoid any major problems or downtime!
Here are some of the most common causes of unusual noises coming from your HVAC system:
Loose or damaged parts: Over time, the various parts of your HVAC system can become loose or damaged. Consequently, this can cause rattling or banging noises. This can be particularly true of the blower motor or fan blades.
Dirty air filters: If the air filters in your HVAC system are dirty or clogged, it can cause the system to work harder than it needs to, which can result in strange noises.
Refrigerant leaks: If your HVAC system is low on refrigerant, it can cause the compressor to make strange noises. This is because the compressor has to work harder to move the refrigerant through the system.
Worn bearings: The bearings in the blower motor or fan blades can wear down over time, which can cause a grinding or squeaking noise.
Ductwork issues: If there are leaks or gaps in your ductwork, it can cause air to escape and make a whistling or hissing noise.
If you are unsure about what is causing the strange noises coming from your HVAC system, it’s best to contact a professional HVAC technician to diagnose and fix the issue.