Why is My A/C System Noisy?
Relaxing inside on a warm summer day with the A/C running. Sounds great right? Well the clanking and buzzing noises coming from your A/C do not sound great.
Why is your A/C system noisy? If the noise is loud enough to become a distraction in your home, chances are that something is wrong with your unit. There a few reasons why your A/C might be making noise:
- Malfunctioning compressor– The compressor in your air conditioning unit is the part of your cooling system that works to pressurize and cool the refrigerant in the unit. A buzzing sound means your compressor may not be working properly, or that the electrical voltage flowing through your outdoor air conditioner is not at its correct amperage.
- Missing or damaged isolation feet– The compressor in your air conditioner is mounted to the base of the AC unit and sits on small rubber feet (called isolation feet). Over time and after continued use, the rubber on the isolation feet sometimes cracks and/or disintegrates, causing the compressor to become unbalanced and causing a loud, buzzing noise when operating.
- Frozen AC unit– Even though your air conditioning system is meant to be used during the hottest times of the year, AC units often freeze up. Refrigerant leaks can cause the evaporator coil to freeze and can cause a buzzing sound to be heard from your unit.
- Loose parts– If a part becomes loose or is missing (e.g. loose bearings), it may cause other parts of your system to prematurely wear down and cause the buzzing noise.