What Do These Alarming Ductless AC Noises Mean?

Loud and unusual noises always have ominous and worrisome implications for HVAC systems. This is also true for ductless mini-splits because these systems typically operate in almost total silence. Here are three alarming noises that the ductless AC system in your Hillsborough, NC, home may produce:

Cracking or Rattling

The two most common reasons for these noises are loose system components and an influx of debris. A fan blade or a group of bolts might come loose somewhere inside your system and begin rattling around. Similarly, pebbles, dirt, twigs, acorns, and other debris might find their way into your system and tumble around inside of it throughout the day.

The best way to squelch these noises is to ask HVAC service technicians to perform tune-ups or repairs on your system. As they do this service, they’ll tighten up all loose parts and clean any debris. We also recommend cleaning your system’s filters once every two weeks.

Hissing, Whistling or Gurgling

These noises are all among the telltale indicators of a refrigerant leak. If your mini-split’s refrigerant lines sustain enough damage, holes may appear in them. As refrigerant gas escapes through these holes, it can create hissing or whistling sounds.

Also, the air may displace the lost refrigerant. Once this happens, the air may form bubbles in the refrigerant lines.

Squealing

When some of your mini-split’s components lack adequate lubrication or fall into misalignment, they may start making high-pitched squealing or screeching sounds. Most commonly, the culprits are the fan blades or bearings. HVAC service technicians can apply lubrication to parts and perform realignments during maintenance.

You should treat every strange noise coming from your mini-split as a serious problem. Call Regan & Son HVAC, Plumbing & Electric to ask for the best ductless AC services anywhere around Hillsborough, NC.

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