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Why Your Window Air Conditioner is Noisy

Do you currently have multiple window unit air conditioners in your home that are making a ton of noise? Unfortunately, these window units can become extremely noisy as they get older and are used more. The reason they get so noisy is because - well, there are actually a few reasons why...

Noisy Ac Window Unit

  • Unknown Debris – If one of your window units randomly starts making loud noises, check to see if something has fallen into the unit. Since a majority of the unit is hanging outside; leaves, animals, and other debris can easily enter it. To inspect the inner workings of a window unit, unplug it, open up the front grill, and peek in with a flashlight.
  • Damaged Fan Blades – When a piece of debris finds its way inside of the window unit, it can come into contact with the fan blades. Once a fan blade becomes bent it will continue to make noise until it has been straightened out. Use a pair of pliers to remedy this situation.
  • Lack of Lubrication – The fan motor of a window air conditioner can begin to emit a loud, continuous noise if it's not properly lubricated. You can open your window unit to lubricate the fan motor, just be aware that many of the motors are sealed within and are hard to reach.
  • Feel the Vibrations – Since window units are, well, sitting in the frame of a window, vibrations and noises can occur if it's not mounted properly. Since air conditioners are heavy with multiple moving parts, you will need to secure a window unit firmly within the window frame. You should also be aware of the size of the unit and how it compares to the size of the window frame.
  • Short Useful Life – Relying on small window units to cool an entire house means they will be on for extended periods of time to reach the desired temperature. This will add a lot of wear and tear to the units, thus reducing their useful life and efficiency. The harder a window unit has to work, the louder it will become.

Window air conditioners can become extremely noisy if anything goes wrong with them. If you're sick of having an unevenly cool home, high energy bills, and hearing constant (and loud) noises, contact Lancaster Plumbing, Heating, Cooling & Electrical to learn about installing a cooling system in your home. To learn more about cooling systems or to schedule an appointment, give us a call at (717) 207-9952.