WineCellarRepair.center (844) 398-5977Mon–Sat, 8am–8pm Book a visit
A slim white split-system wine cellar evaporator unit mounted high on a plastered wall of a US home wine cellar above curved wooden racks of wine bottles without labels, insulated copper lines entering the wall beside it, warm low lighting.

Split-System Cellar Cooling Repair

An evaporator inside or beside the cellar and a condensing unit outside or in another room, joined by an insulated copper line set and charged on site.

(844) 398-5977

Mon–Sat, 8am–8pm

  • 4 things that fail on it
  • 6 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 split system?

A split system divides the cooling unit into two halves. The evaporator, with its coil, fan and drain, hangs on a cellar wall or sits ducted just outside the room; the condensing unit, with the compressor and the condenser, sits outdoors on a pad, on a roof or in a garage where its heat and noise do no harm. A pair of copper lines, the line set, carries refrigerant between them, and a low-voltage cable carries the control signal. That layout gives the quietest cellar and the most freedom in design, but it adds joints that were brazed on site, a charge that was weighed in by whoever installed it, and an expansion valve that meters refrigerant into the coil. A slow leak at a flare or a brazed joint, a line set crushed by a landscaper, or a condenser choked by leaves and cottonwood fluff can all look like a cellar that has simply grown warm. Diagnosis on a split system means reading pressures and temperatures on both ends, not just looking at the fan.

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 split-system cellar cooling

How to tell

01

Inside the cellar a slim evaporator hangs on a wall or a grille sits in the ceiling, and you hear only a fan when it runs.
02

Outside, or in a garage or utility room, a small condensing unit with its own fan and service valves sits on a pad or a wall bracket.
03

Two insulated copper lines and a thin control wire run between the two, through a wall, a crawl space or a ceiling.
04

The system was installed by a refrigeration contractor who brazed the lines and charged it on site, and the paperwork shows two model numbers.

Not yours?Through-the-wall cellar cooling unitDucted cellar cooling unitCeiling-mounted cellar cooling

What fails
on this design.

On a split-system cellar cooling: a slow refrigerant leak on the line set, a condenser that gets the weather, the expansion valve and the charge, control wiring between two boxes.

The problems it shows

A slow refrigerant leak on the line set

Every joint made on site is a place a leak can start, and vibration works on them over years. The cellar warms a little more each summer, the evaporator may frost in patches, and topping it off without finding the leak only buys a season.

A condenser that gets the weather

An outdoor condenser collects leaves, grass clippings and seed fluff, and a unit set in full afternoon sun or boxed in by shrubs struggles to shed heat. High head pressure trips the safety switch, and the system cycles on and off in the heat of the day.

The expansion valve and the charge

A cellar evaporator runs close to freezing, so a small error in charge or a sticking valve moves it into icing or into starving. The symptoms are ice on half the coil, a line that frosts back toward the outdoor unit or a room that never pulls down.

Control wiring between two boxes

The thermostat in the cellar tells the condensing unit when to run through a thin cable. A nicked wire, a loose terminal or a contactor worn at its points can leave the indoor fan spinning while the outdoor unit never starts.

Getting at it,
and whether to.

Both halves get checked, so the condensing unit outside or in the garage needs clear access, including any gate code or a pet kept inside.

What repairs cost

On the visit

  1. Inside, the technician needs to reach the evaporator with a ladder and see where its drain goes; clear the racks or cases directly below it.
  2. Any paperwork from the installer helps a great deal: the line length, the charge and the model numbers of both units.
  3. If the outdoor unit is humming without its fan turning, or a breaker keeps tripping, switch it off at its disconnect or the panel and wait for the visit.

Repair or replace

A split system is built into the house, with lines through walls and ceilings, so repairing a fan, a contactor, a valve or even a leak nearly always wins over tearing it out. The honest exception is an older system that has lost its charge more than once or uses a refrigerant that is now scarce and costly; there a new condensing unit, or a new system on the old line set where the maker allows it, is put beside the repair so you can weigh them.

Book a visit for a split-system cellar cooling

The problems
it shows.

On a split-system cellar cooling, 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 compact wine cellar with a through-the-wall cooling unit grille high on a painted wall and a small round temperature sensor mounted on a rack post just below it, unlabeled bottles lying in wooden racks.

Cellar Cooling Unit Short Cycling

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

 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 small controller panel on the cellar side of a through-the-wall cooling unit, its display glowing with abstract amber segments beside the slotted supply grille, the top row of a wooden wine rack with unlabeled bottles just below.

Cellar Cooling Unit Error Code

8 causes, cheapest first

 An open gray electrical panel on a dry basement wall beside the closed wooden door of a wine cellar, one breaker switch sitting in the tripped middle position among a neat row of others, a small window in the cellar door showing dim racks of unlabeled bottles. The collection is exposed

Cellar Cooling Unit Tripping the Breaker

5 causes, cheapest first

Who builds
a split system.

6 of the makes on this site build a split-system cellar cooling. Each mark opens that make's own page.

All 7 brands

Split-system cellar cooling 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
split-system cellar coolings.

Can any HVAC company work on a split cellar system?
The refrigeration side is familiar to any trained refrigeration tech, but a cellar system runs a colder coil, a tighter humidity window and a controller of its own. Someone who knows these systems checks the room and the controller settings as well as the pressures, which is where many repeat calls come from.
My outdoor cellar condenser runs, but the cellar is warm. Why?
Either the refrigerant is not reaching the coil well, from a low charge, a leak or a sticking valve, or the indoor side is not moving air, from a stopped fan or an iced coil. Look at the evaporator inside: ice on it points one way, a quiet fan another. Tell us what you see when you book.
How far can the condenser sit from the wine cellar?
Makers list a maximum line length and a maximum height difference between the two units, and going beyond them hurts oil return and capacity. Long runs also need the right line size. The installer's records or a look at the line set tell the technician whether the layout is part of the problem.
Should the cellar condensing unit be covered in winter?
Not with a sealed cover, since cellar systems often run in cold weather too, and a cover traps moisture. Some models need a low-ambient kit to run well when it is cold outside. Keeping snow, leaves and plants a couple of feet clear of the coil matters more.

Back to your everyday

Is it a split-system cellar cooling?

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