WineCellarRepair.center (844) 398-5977Mon–Sat, 8am–8pm Book a visit
A wine cellar cooling unit set into the upper part of a stone wall in a US home wine cellar, its cellar-side grille flush with the wall above dark wood racks full of wine bottles, cool soft lighting.

Through-the-Wall Cellar Cooling Unit Repair

A self-contained box set into an opening in the cellar wall: its cold face blows into the wine room, and its warm face breathes out into the room next door.

(844) 398-5977

Mon–Sat, 8am–8pm

  • 4 things that fail on it
  • 7 makes build it
  • 6 problems it shows

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Three short steps, about a minute.

or call (844) 398-5977

Is yours
a through-the-wall?

A through-the-wall unit carries the whole cooling system in one steel case that sits in a framed hole in a cellar wall, usually high up, since cold air sinks toward the racks. The side facing the bottles has the evaporator and a fan that pulls cellar air across it; the side facing the neighboring space has the condenser and a second fan that throws the heat it collected out into that space. That arrangement makes the room next door part of the machine. When the exhaust side opens into a small closet, a laundry corner or a stair hall that runs warm, the unit ends up breathing its own discharge, pressures climb and the cellar creeps up a degree at a time. The wall matters too: the gap around the case has to be sealed and insulated, or warm air leaks straight past the cold coil. Most service calls on this type start on the exhaust side, with a thermometer in that room, before the case is pulled.

A technician on a short stepladder in a US home wine cellar holds a digital thermometer probe up to the grille of a wall-mounted cellar cooling unit, stone walls and dark wooden racks of wine bottles around him, cool soft lighting. What fails on a through-the-wall cellar cooling unit

How to tell

01

One rectangular grille, often near the ceiling, sits flush in a cellar wall, and on the far side of that same wall a second grille of the same size faces another room.
02

Nothing runs outdoors and no ducts leave the unit; the power cord usually drops from the exhaust side to an outlet in the neighboring room.
03

A clear plastic drain tube or a small drip tray hangs below the cellar-side grille, or a condensate line runs down inside the wall.
04

A control panel or a small display sits on the case itself, on the cellar side, rather than on a separate wall thermostat.

Not yours?Ducted cellar cooling unitSplit-system cellar coolingCeiling-mounted cellar cooling

What fails
on this design.

On a through-the-wall cellar cooling unit: an exhaust room that cannot absorb the heat, a dirty condenser on the exhaust face, ice on the cellar-side coil, fan motors that run for years without a rest.

The problems it shows

An exhaust room that cannot absorb the heat

The heat pulled out of the cellar lands in the space behind the unit. A closet with the door shut, or a room that already sits in the upper 80s in August, sends that warm air straight back into the condenser, and the unit runs all afternoon while the cellar drifts upward.

A dirty condenser on the exhaust face

Lint from a nearby laundry, pet hair and household dust collect on the condenser fins facing the warm room. Over a few seasons the coil clogs, the compressor works hotter, and the thermal overload starts shutting it off in the middle of a cycle.

Ice on the cellar-side coil

A cellar held near 55°F runs the evaporator close to freezing. A tired fan, a thermostat set too low or a door that lets humid house air in lets ice form, the airflow drops, and water pours out of the case when it finally thaws.

Fan motors that run for years without a rest

Both fans often spin whenever the unit is powered. Bearings dry out, blades pick up grime and a motor starts to hum, rattle or stall, and one quiet fan is enough to leave the cellar warm or the exhaust side overheated.

Getting at it,
and whether to.

Most repairs are done from the exhaust side, where the case slides out of its sleeve, so the neighboring room needs about four feet of clear floor in front of the grille.

What repairs cost

On the visit

  1. Clear any racks, cases or crates stacked under the cellar-side grille so a ladder can stand there and the drain can be traced.
  2. If the unit hangs high on a finished wall with trim around it, expect the trim to come off and go back on; the technician checks for a sealed sleeve before pulling anything.
  3. Keep the cellar door closed until the visit; a full, well-insulated room of bottles loses cold slowly, and every opening lets in warm, humid air.

Repair or replace

A through-the-wall unit fits one opening at one capacity, so a fan, a thermostat, a start relay or a cleaned and restored condenser nearly always makes more sense than a new case. The line moves when an older unit needs a compressor or a sealed-system leak repair, or when the unit was undersized for the room from the start; then a larger or better-placed system may serve the collection better. You see both options with their bands before anything is ordered.

Book a visit for a through-the-wall cellar cooling unit

The problems
it shows.

On a through-the-wall cellar cooling unit, most often wine cellar too warm.

All problems
A small stone-walled wine cellar with dark wooden racks full of unlabeled bottles lying on their sides, a through-the-wall cooling unit grille set high on the far wall and a round dial thermometer standing in a glass of water on a tasting shelf in front. The collection is exposed

Wine Cellar Too Warm

6 causes, cheapest first

 A narrow storage closet with its door wide open, the louvered exhaust grille of a through-the-wall cellar cooling unit set into its back wall, stacked cardboard boxes pressed close in front of the grille and a faint heat shimmer in the air.

Cellar Cooling Unit Exhaust Overheating

5 causes, cheapest first

 The cellar-side grille of a through-the-wall cooling unit high on a plastered wine cellar wall, a dark wet streak running down the plaster below it toward a wall outlet, wooden racks of unlabeled bottles along the side wall and a folded towel on the tile floor. The collection is exposed

Cellar Cooling Unit Leaking Water

6 causes, cheapest first

 The exhaust side of a through-the-wall cellar cooling unit in a finished family room, its louvered grille set into a painted wall above a low bookshelf, a closed glass-paneled door to the lit wine cellar beside it showing racks of unlabeled bottles.

Cellar Cooling Unit Loud or Vibrating

5 causes, cheapest first

 The cellar-side grille of a wall-mounted split evaporator in a wine cellar, removed and leaning below it, revealing a thin aluminum coil coated in white frost, wooden racks of unlabeled bottles on the adjoining wall.

Cellar Cooling Evaporator Coil Icing Up

5 causes, cheapest first

 A ducted wine cellar with a white supply grille in the wood-paneled ceiling above tall racks of unlabeled bottles, a small wall clock with a plain face on the end panel and a faint shimmer of cool air below the grille.

Cellar Cooling Unit Running Constantly

5 causes, cheapest first

Who builds
a through-the-wall.

7 of the makes on this site build a through-the-wall cellar cooling unit. Each mark opens that make's own page.

All 7 brands

Through-the-wall cellar cooling unit repair,
where we come out.

9 metros, each with its own page.

All service areas

Tampa BayFL · 31 areas

OrlandoFL · 30 areas

Miami / South FloridaFL · 47 areas

New York MetroNY · 75 areas

HoustonTX · 36 areas

ChicagoIL · 50 areas

Los AngelesCA · 95 areas

San DiegoCA · 31 areas

San Francisco Bay AreaCA · 74 areas

A couple lifting a bottle from a lit stone-walled wine cellar, the cooling unit's grille high on the far wall
For the heart of your home.

Questions about
through-the-wall cellar cooling units.

How warm can the room behind a through-the-wall cellar unit get?
Each maker prints a ceiling for the exhaust-side room in the installation guide, and it is lower than many owners expect. The room also has to be big enough, or vented enough, that the hot air leaving the unit does not simply circle back into it. A thermometer left in that room on a hot afternoon tells you a lot before any visit.
Can the exhaust side of my cellar unit blow into a closet?
Only if the closet is vented to a larger space or the maker allows it for that model and size. A small closed space warms up within hours, and the unit then runs nearly nonstop. A louvered door, a transfer grille or moving the exhaust can solve what looks like a failing compressor.
Why does water drip from the grille inside my wine cellar?
The cold coil pulls moisture out of the cellar air, and that water has to leave through a drain tube or a tray. A kinked tube, a clogged outlet or a coil that iced over and then thawed all at once can send it out of the front instead. Keep the floor below dry and away from any outlet.
Is a through-the-wall unit louder than other cellar systems?
Usually yes, because the compressor and both fans sit in the wall of the room. A steady hum is normal. A new rattle, a grinding fan or a buzz that starts and stops without cooling is worth a visit before it becomes a failure.

Back to your everyday

Is it a through-the-wall cellar cooling unit?

Say so when you book — it changes what the technician brings and how the visit is planned.

Schedule a repair Call (844) 398-5977
(844) 398-5977 Schedule a repair