When heating or cooling equipment is running, it’s normal to hear a low hum as air moves through the system. However, if the soft vibration is replaced with a loud commotion, it’s time to call an HVAC contractor for air conditioning or furnace repair. For a better idea of what problems a technician might need to address, below are issues associated with common HVAC noises.   

Common HVAC Sounds & What They Mean

1. Banging 

If you hear the sound of metal banging against metal, there could be a loose or dislodged mechanical component moving around inside the AC unit or furnace. An air conditioning or furnace repair technician might need to replace or tighten a pin, fan blade, bolt, or additional part. The issue should be resolved immediately, as the loose part could bang against other components and cause additional damage.   

2. Hissing 

When there are gaps in ducts, it causes air to leak from the fixtures, and this is often accompanied by a hissing sound. A loud hissing could be caused by a gap in ductwork behind walls, so put your ear against the surface to pinpoint the general area of the noise. A technician will have to go behind the wall to secure the ducts or replace damaged fixtures. If you hear a soft hissing sound, you might need a larger filter. If there are gaps around it, air will move through the openings instead of flowing through the screen, creating noise in the process.      

3. Rattling 

Because some of the components of your HVAC system are installed outside, you should also check for strange noises in the yard. If you hear a rattling sound, there might be gravel, leaves, twigs, or additional debris moving around inside the cabin of the outdoor compressor. Make sure to turn off power to the appliance before trying to remove the rubbish.

If you need air conditioner or furnace repairs to improve system performance and ensure quieter operation, contact the certified specialists at Dependable Air Conditioning. For more than 36 years, the Russellville, AR-based technicians have been the go-to source for effective solutions that keep clients’ spaces comfortable without causing a spike in energy costs. If you need new equipment, they’ll help you pick the right system for your house. Visit the company online to learn more about the team and call (479) 968-5555 to schedule AC or furnace repair today. For more maintenance tips, like them on Facebook.