A split cooling unit is a climate control solution for wine cellars that features a split design, separating the condenser unit from the evaporator, allowing for flexible installation and quiet operation.

The evaporator inside the cellar cools and circulates air, while the condenser—located outside or in another room—removes heat. The two components are connected by refrigerant lines that transfer heat away from the cellar.

• Quiet operation with minimal vibration inside the cellar
• No heat exhaust into the cellar or nearby living areas
• Flexible installation (indoor or outdoor condenser placement)
• Better temperature and humidity stability

These advantages make split systems ideal for high-end or residential wine cellars.

Yes. Because the condenser (the noisiest component) is located remotely, noise and vibration inside the wine cellar are significantly reduced or nearly eliminated.

Yes. Split systems require refrigerant line connections, electrical wiring, and proper system balancing. Installation must be completed by a licensed HVAC technician.

Sizing depends on:

• Cellar size (cubic footage)
• Insulation and vapor barrier quality
• Glass walls or doors
• Lighting and frequency of use

A proper heat load calculation is recommended to ensure optimal performance.

Yes. The condenser can be installed outdoors or in a mechanical room, provided it has proper ventilation and is protected from extreme environmental conditions.

• Ductless split systems: Evaporator is installed directly inside the cellar
• Ducted split systems: Evaporator is placed remotely and air is delivered through ductwork

Ducted split systems offer a cleaner, hidden look, while ductless systems are more straightforward to install.

Yes. Split systems are often recommended for medium to large wine cellars and for spaces with higher heat loads, such as glass wine rooms or warm climates.

Yes. Most split systems are designed to maintain optimal humidity levels (typically 50%–70%) along with stable temperatures, helping preserve cork integrity and wine quality.

The condenser can typically be installed several feet to dozens of feet away from the evaporator, depending on manufacturer specifications and line set limits.

Yes. While the condenser is remote, it still requires proper ventilation or outdoor placement to dissipate heat efficiently.

With proper installation and maintenance, split systems generally last 10–15 years or more, depending on usage and environmental conditions.

Routine maintenance includes:

• Cleaning or replacing filters
• Inspecting refrigerant lines and connections
• Ensuring proper airflow and condenser performance

Regular servicing helps maintain efficiency and extend system lifespan.

Choose a split system when:

• Noise reduction is a priority
• You want no visible equipment inside the cellar
• The cellar is medium to large in size
• The project involves glass enclosures or luxury design elements