There’s a wide range of different noises that your air conditioner can make. HVAC systems have built in noise reduction technology that generally keeps the level between 25 and 65 decibels. If the AC unit is pumping out very loud sounds or unfamiliar noises, it’s going to need help from your local HVAC professionals in the Valley of the Sun. Similar to car noises, an AC sound can let you know there’s an issue that needs to be fixed sooner rather than later. Here’s a list of three AC noises and what may be causing them.

Rattling

Is your AC unit making a constant rattling noise? This can be one of the easier sounds to diagnose. Maybe a recent monsoon thunderstorm may have embedded sticks or dirt debris in the condenser in the outdoor unit. Sometimes a loose screw on the outside AC unit can loosen up over time due to typical unit vibration. Both situations are relatively quick fixes by cleaning the condenser or tightening screws. If you’re hearing the sound inside the house, it can be from air vents recently closed in any of your rooms or from air ducts that have become loose.

Squealing

Possibly one of the most annoying sounds is a high-pitched squealing or screeching noise. There are two common causes. When the humidity levels are elevated during monsoon season, a worn out or broken fan belt can cause this sound. The other potential cause is due to high pressure in the compressor. This is the component pumping refrigerant gas that cools air through the AC unit. It’s best to call for immediate assistance before additional damage is done to the HVAC system.

Clicking

A clicking noise that doesn’t go away can be a problem. There are four typical causes:

• The AC capacitor that powers the compressor can be losing its charge.
• When the thermostat’s relay is broken, or there’s a wiring problem the AC won’t receive power.
• The outdoor AC unit fans may be obstructed by debris or loose.
• A faulty electrical signal somewhere in the AC unit can cause the unit to shut off and on repeatedly.

Bruce’s Pros Are AC Noise Experts

Some sounds can be simple issues to resolve. Other noises can be serious and require help from your local HVAC professionals. You don’t want to neglect unusual sounds from your AC unit. Bruce’s Air Conditioning & Heating technicians are only a call away. Call us today at 480-968-5652 to schedule an appointment. We’ll provide you with reliable service from our knowledgeable technicians.