Certain air conditioner noises are normal and others are a sign of a bigger problem. Overall, your HVAC system should run fairly quietly. In fact, many modern air conditioners have been designed to reduce noise. When you hear a new noise or one that is louder than ever before, consult this list of 6 sounds that could signal a problem with your air conditioner.

  1. Click Clack

It’s common to hear a clicking or clacking noise when your air conditioner first starts up or shuts down. Pay attention to constant clicking because this could be due to a thermostat failure or a malfunctioning control system. Your air conditioner houses a vast number of electrical components and finding the true culprit can be quite time-consuming when you don’t know what you’re looking for. It may be best to seek the services of an air conditioning professional in this instance.

  1. Banging

When you hear banging – it’s typically indicative of a damaged or loose part such as the crankshaft, piston pin or connecting rod. Sometimes the banging noise is due to a broken compressor which needs to be replaced.

  1. Clink Clank

Similar to banging, a clanking sound often points to an unstable piece within the air conditioning unit. It could also be a sign that the blower or fan blades are out of balance, causing them to strike against other segments of your air conditioner.

  1. Squealing & Squeaking

This type of commotion is usually produced by the blower or fan motors as they either fail to operate property or near the end of their useful life. A few air conditioning models tend to make a squeal or squeak when first starting up, so it’s important to be aware of the normal noises your unit makes.

  1. Buzzing

Unfortunately, buzzing is a common cause for many potential issues. These range from common maintenance items such as a condenser coil cleaning and dirty air filter to the more serious issue of failing or faulty parts. Refrigerant leaks, a bad blower motor, uneven fan blades and debris within your AC unit are all potential problems that can trigger a buzzing sound.

  1. Screeching

Not only is this sound especially disturbing, but it’s also often a sign of an urgent issue. When hearing a shrill screech or whistle from your air conditioner, immediately turn it off and contact your trusted air conditioning specialist. This type of sound typically results from either a refrigerant leak or high internal pressure within your unit. Both issues can be very dangerous.

Over time, you’ll become used to the various noises your air conditioner makes. As a homeowner, it’s vital to pay attention to how well your air conditioner is working. If you lack the time, we’re happy to step in and offer our help! Please reach out to us at (813) 924-3836 to schedule your next AC maintenance appointment, or contact us online.