Why Is My Air Conditioning Unit Shaking?

AC Repair

There's no denying that having a fully functioning air conditioning system is a must for the hot summer season. Unfortunately, air conditioning systems may malfunction from time to time. One of the most common malfunctions you may experience is excessive unit vibration.

There Are Multiple Reasons

When it comes to unit vibration, several issues could be causing this problem. The most common include:

  • Debris stuck in the blower fan
  • Broken or bent fan blade
  • Out of balance fan
  • Malfunctioning fan motor or compressor

It's typically best to start by turning your system entirely off. This means killing the power to it so that there is no chance of causing any electrical harm while working with the air conditioning system.

Check the Outside Fan For Debris

Start by removing the air conditioner grille cover to have access to the fan housing of the unit. Next, evaluate the fan housing to see any debris stuck inside the outer fan. Sometimes loose debris like twigs and leaves can get stuck inside the fan housing. When the fan spins, it hits this debris and creates a vibration.

Examine Your Outside Fan Blades

Debris falling into your fan housing can damage your fan blades from time to time. Additionally, as your fan runs against the debris, it can bend or break one of its blades. Take a few moments and evaluate each fan blade to see if it has become bent or broken. You'll want to bend any fan blades back into place or call an air conditioning professional to do it for you.

Check the Outside Fan For Balance

If there doesn't seem to be any debris stuck in your outer fan, then try and spin the fan manually. Your fan should easily spin. If you notice that your fan wobbles as it spins, then it's out of balance. This means that you'll need to call in an air conditioning professional to replace or rebalance the fan.

Have Your Fan Motor and Compressor Checked

If the vibration doesn't seem to be caused by debris stuck in the fan or an out-of-balance fan, it's likely an issue with your fan motor or compressor. The fan motor needs regular maintenance by an AC professional to ensure that dirt and other debris don't clog the motor hole. As air conditioning compressors wear out, their vibration intensity will increase.

Call Us Today

If you've noticed that your air conditioning unit is starting to vibrate excessively, then it's time to give us a call. Let our knowledgeable and helpful HVAC technicians evaluate the problem and get it fixed before more damage happens to the other components of your air conditioning system.