Normally, the sound of your air conditioner is nothing more than a background noise. However, when you notice different sounds coming from your AC unit, you rightfully may be concerned. Numerous unusual sounds indicate that your system requires attention soon. What are some of the strange sounds your AC system could make?
Screeching
A screeching sound coming from your air conditioner is hard to miss. If this sound continues non-stop while the system runs, the fan motor is usually the cause. If the sound is only heard as the system ramps up, the AC compressor requires professional attention.
Squealing
If pressure is building up in your AC system, it will produce a squealing sound. Intense pressure can result in serious damage. The most common source of this sound is pressure in the compressor. Depending on the compressor’s condition, either cleaning it or replacing it could resolve the problem.
Humming
If your AC unit’s contractor relay switch is defective, it will create a humming sound. This part is responsible for starting the system’s outdoor unit. If the switch is not repaired or replaced, you will not be able to turn the AC system on.
Banging
Typically, a banging sound indicates that one of the parts in your AC system is loose. This could be something as minor as a screw or bolt, or it could be the fan. While this seems like a minor issue, it requires prompt attention. The banging sound comes from the loose part banging against other parts of the unit. This could result in significant damage.
Rattling
Rattling might also indicate that a part is loose in your AC system. It could also be a sign that debris is in your equipment. If you notice debris on the unit, brush it off. If the rattling continues, professional service is necessary.
Buzzing
One of the common causes of a buzzing sound is an electrical issue. Frayed junctions and faulty wires are some of these issues, and they can lead to a house fire. There are other potential causes as well, such as a jammed condenser fan or a frozen system. Because of the risk of a fire, you should immediately turn the AC unit off and schedule service if you hear a buzzing sound.
Clicking
You may notice a clicking sound when your AC system starts running, and this is normal. However, if your unit makes extra clicks, the system requires attention. The most common cause of this sound is a failing air conditioner capacitor. If you do not address the problem quickly, the motor will eventually not run any longer. Repair costs are often higher if this happens.
Bubbling
Excess moisture in the AC unit often creates a bubbling sound. This extra moisture often comes from a drainage pipe hole, a crack, or a blockage. Replacing the pipe is typically required to resolve this problem.
Hissing
When your AC system operates, the refrigerant flows through coiled tubes. These coils could develop a crack, which allows the refrigerant to leak. The result is a hissing sound. In some cases, this sound is accompanied by a gurgling noise. There are other causes of a hissing sound, such as issues with the pump coil, valves, flare connections, heat pump, and capillary tube.
Schedule Service Today
If your air conditioner is making unusual noises, our specialists can help. At One Hour Air Conditioning and Heating, we are committed to helping you enjoy a comfortable home environment. Schedule service with us today.