The short answer
On a built-in cabinet noise is usually contact with the housing or a condenser fan working against restricted air. Slide the unit forward on its own and run it: if it goes quiet, nothing inside is wrong and the fix is in the joinery.
What you actually see and hear
- A drone that changes or stops when the unit is pulled forward — Contact with the housing. The commonest complaint on a built-in cabinet.
- A fan whirr from the front grille that rises after a while — The condenser fan running hard because the grille is restricted.
- A rattle only while the compressor runs — A pipe or a rear pan touching the shell, or the housing panel resonating.
- Clicking every few minutes without sustained running — The start circuit. A genuine fault, and the cabinet will be warming.
- NEAR MISS - gurgling after it shuts down — Refrigerant settling, normal on every sealed system.
Causes, most likely first on this machine
- Contact between cabinet and housing — First. A side panel, a plinth or a worktop touching the shell converts ordinary compressor vibration into an audible drone through the whole run of units.
- Restricted ventilation at the grille — Second, and it makes noise and poor cooling together: a fan that cannot move air runs longer and louder.
- Compressor mounts and the rear pan — Third. Grommets harden, panels work loose, and the noise arrives gradually over years.
- Loose glass door or a rattling shelf — Fourth, and specific to bar cabinets: a glass door with worn hinges rattles in its frame every time the compressor starts.
- Start relay, overload or compressor — Last, and the only one that is a fault rather than an installation problem.
Check in this order, and why
- Slide the unit out of the housing and run it clear — The single most informative test on a built-in appliance.
- Check the ventilation grille is clear and unobstructed — Plinth grilles fill with dust and get blocked by flooring.
- Feel for the fan at the grille with the compressor running — Air should be moving. If it is not, that is your noise and your cooling problem.
- Listen for the click-pause-click pattern — It is the one sound on this page that needs a technician.
What an owner can safely check
- Pull the unit forward clear of the housing and run it for ten minutes — If the noise goes, the fix is packing and clearance, not a repair.
About 20 min
- Vacuum the ventilation grille and the condenser behind it — Restricted air makes noise and costs cooling at the same time.
Tools: vacuum, soft brushAbout 20 min
- Level the cabinet and check it is not resting on the plinth or worktop — Small shims often cure a built-in drone completely.
Tools: spirit levelAbout 20 min
- Check the door closes squarely and the hinges are not loose — A rattling glass door is a common bar-fridge complaint.
Tools: screwdriverAbout 15 min
- STOP HERE if the compressor clicks and will not run — Start circuit or compressor - not an owner repair.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel - a capacitor can hold a charge after the power is off. An under-counter cabinet sits in a housing with a live outlet behind it that you cannot see, so switch off at the breaker before pulling the unit out. The compressor and its relay stay hot and live until the unit is unplugged.
When to call a technician
Call when the unit is noisy with the housing out of the picture, or when you hear the click-pause-click of a compressor that will not start. Before that, do the clearance work: a built-in cabinet that drones through a run of kitchen units almost always needs air and a few millimetres of separation rather than a part. Call an installer rather than an appliance technician if the housing itself is too tight or the grille has been covered by flooring.
Nearest pages of this class
What this page does not cover
This page is written for the under-counter beverage refrigerator class, not for one family or model line. Where a brand- or model-specific page exists for your unit it is the more specific answer and it is linked above, so go there first if your machine is named. What is deliberately not here: compressor and fan part numbers, thermostat ranges, door hinge specifications and cabinet cut-out dimensions, all of which differ by family and belong on the page for that family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
