The short answer
Water from a built-in cabinet is condensate that has lost its way. Find whether it is appearing inside, behind or under the unit, because each answer points at a different part of the same short drain path.
What you actually see and hear
- A pool inside at the bottom of the cabinet — The internal drain channel or its hole is blocked.
- Water under the plinth or at the front of the joinery — The evaporation tray has overflowed or been knocked out of place.
- Beads of water on the inside walls and on bottles — Condensation from frequent door openings in a humid room.
- Damp at the back of the housing — Tray overflow, or condensation on the cabinet exterior in a humid space.
- NEAR MISS - water on the outside of a glass door — Room humidity meeting cold glass. Not a leak at all.
Causes, most likely first on this machine
- Blocked internal drain channel or hole — First. It is small, it sits at the base of the rear wall, and label paper, drink residue and ice plugs block it regularly.
- Evaporation tray full, cracked or displaced — Second. In a busy bar the cabinet produces far more condensate than a domestic fridge, and the tray is sized for gentler use.
- Door openings and humidity — Third. A warm, humid room and a constantly opened door produce water faster than any small cabinet can evaporate it.
- Door seal or alignment — Fourth. A seal that does not close cleanly lets humid air in continuously rather than only at openings.
- Cabinet not level in its housing — Last, and easy to miss during an install: a forward lean sends the condensate to the joinery instead of the channel.
Check in this order, and why
- Work out whether the water is inside, behind or underneath — Each location points at a different part of the same path.
- Empty the cabinet and find the drain hole at the base of the rear wall — A blocked hole is the single most common cause.
- Slide the unit out and check the evaporation tray — Full, cracked or knocked sideways are all common in a housing.
- Check the seal and how often the door is opened — In a bar this is usually the volume control on the whole problem.
What an owner can safely check
- Empty the cabinet and clear the drain hole with a soft probe — A cotton bud or a soft straw only - never anything metal near the liner.
Tools: cotton budAbout 15 min
- Slide the unit out, empty the evaporation tray and reseat it level — Check it for cracks while it is out of the housing.
Tools: towelAbout 20 min
- Level the cabinet in its housing with a slight backward tilt — This is what keeps condensate in the channel.
Tools: spirit levelAbout 20 min
- Clean the door seal and the frame and test it with paper — A clean seal cuts the amount of moisture entering dramatically.
Tools: cloth, paperAbout 15 min
- Wipe the interior dry and watch how fast water returns — The rate tells you whether this is use or a blockage.
Tools: clothAbout 10 min
- STOP HERE if water appears from the compressor area itself — That is service territory on a sealed unit.
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 drain is clear, the tray is sound, the cabinet is level and water still collects, because something in the condensate path is failing rather than blocked. Call promptly if water has been reaching the joinery or a timber plinth, since the damage to the cabinetry usually exceeds the cost of the repair. If the cabinet is simply producing more condensate than it can evaporate in a busy bar, that is a use question rather than a fault, and fewer, shorter door openings genuinely fix it.
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.
