Why Is My Ductless Mini-Split So Noisy in Midland, NC?

Using a ductless mini-split is a great, quiet, energy-efficient HVAC solution in Midland, NC. Like any HVAC system, mini-splits can make a little noise. Normal, soft sounds may not indicate a problem, but louder or unusual noises like those listed below may be a sign of trouble.

Clicking, Crackling or Rattling

Something may be loose if you hear a clicking, crackling or rattling sound. A loose part like a bolt, a piece of the fan or motor or some debris could be the source of the sound. That may be what you hear shaking against other parts or rattling around inside.

Humming or Buzzing

Unless it’s a loose part vibrating inside your air conditioning system, humming or buzzing is likely an electrical problem. An electrical issue can undermine the energy efficiency of the mini-split system and cause higher-than-expected energy consumption in the home.

Hissing or Whistling

A hissing or a high-pitched whistling noise could indicate a refrigerant leak. The solution might be as simple as tightening a loose valve or as extensive as replacing the entire system. If you wait to address the leak, it could cause damage to other parts and create a bigger problem.

Grinding

Bearings inside the system reduce friction. If you hear a grinding noise, it might mean the bearings inside the mini-split system have worn down. Without service to the unit, the friction and the sound it produces will only get worse.

Routine maintenance can help you stay ahead of these problems and keep your HVAC system in good order. If you notice any of these unusual noises and suspect an issue, contact us at Dulin Mechanical Services, Inc so we can repair your ductless mini-split.

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