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The Breezaire WKSL 4000 is a professional split-system wine cellar cooling unit engineered for properly insulated wine cellars up to approximately 1,000 cubic feet. By separating the evaporator and condenser into two independently installed modules, the WKSL 4000 helps reduce operational noise inside the cellar while providing stable temperature and humidity conditions for long-term wine preservation.

Designed specifically for wine storage applications, the WKSL 4000 utilizes Breezaire's advanced Sentry III+ digital control system to help maintain ideal cellar conditions. The split-system design offers installation flexibility while supporting the consistent environment needed for proper wine aging and collection protection.
The Breezaire WKSL 4000 is best suited for residential wine cellars requiring dependable climate control for spaces up to approximately 1,000 cubic feet. Because this is a split-system cooling unit, installation must be completed by a qualified HVAC or refrigeration technician who can connect refrigerant lines, perform system evacuation, and charge the system according to manufacturer specifications.
Designed for properly constructed wine cellars up to approximately 1,000 cubic feet.
Split wine cellar cooling system with separate evaporator and condenser modules.
Includes Breezaire Sentry III+ digital controls with temperature display.
| Model | Breezaire WKSL 4000 |
| Cooling System Type | Split Wine Cellar Cooling System |
| Recommended Capacity | Up to 1,000 Cubic Feet |
| Control System | Sentry III+ Digital Controls |
| Humidity Management | Automatic |
| High Temperature Alarm | Yes |
| Digital Temperature Display | Yes |
| Refrigerant | R-134a |
| Electrical Requirements | 110V / 60Hz |
| Fan Coil Weight | 45 lbs |
| Condenser Weight | 55 lbs |
The Breezaire WKSL 4000 is designed for wine cellars up to approximately 1,000 cubic feet when installed in a properly constructed wine cellar environment.
Performance assumptions include:
If your cellar includes extensive glass, elevated ambient temperatures, unusual construction materials, or significant heat loads, additional cooling capacity may be required.
Separates the evaporator and condenser sections into two modules to reduce cellar noise and improve installation flexibility.
The Sentry III+ digital control system supports accurate temperature management for long-term wine storage.
Helps maintain relative humidity levels generally between 50% and 75% to support cork and label preservation.
Breezaire uses vibration-dampening components to help reduce disturbance inside the cellar environment.
Remote condenser placement helps reduce operational sound levels inside the wine cellar.
Ideal for serious collectors building medium to large residential wine cellar spaces.
The Breezaire WKSL 4000 is designed for installation by qualified HVAC or refrigeration professionals.
Unlike self-contained systems, the WKSL Series requires field installation and commissioning before operation.
Even a properly sized cooling system cannot compensate for poor cellar construction.
| Model | Recommended Capacity | Best Application |
|---|---|---|
| Breezaire WKSL 2200 | Up to 265 cu. ft. | Small Residential Wine Cellars |
| Breezaire WKSL 4000 | Up to 1,000 cu. ft. | Medium to Large Residential Wine Cellars |
| Fan Coil Dimensions | 19.75" H × 14.25" W × 12.8" D |
| Condenser Dimensions | 19.75" H × 14.25" W × 12.38" D |
| Cooling Capacity | Up to 1,000 cu. ft. |
| High Temperature Alarm | Yes |
| Electronic Controls | Yes |
| Humidity Control | Yes |
| Digital Temperature Display | Yes |
| Refrigerant | R-134a |
| Electrical Requirements | 110V / 60Hz |
| Fan Coil Weight | 45 lbs |
| Condenser Weight | 55 lbs |

The Breezaire Bottle Probe measures the actual bottle temperature rather than surrounding air temperature, helping collectors maintain more accurate wine storage conditions.
For collectors seeking enhanced temperature accuracy and tighter cellar control, the bottle probe is a valuable upgrade for any wine cellar cooling system.

The Breezaire WKSL 4000 is one of the best split-system cooling solutions for residential wine cellars approaching 1,000 cubic feet. Its combination of quiet operation, installation flexibility, humidity management, and precise temperature control makes it an excellent choice for serious wine collectors seeking dependable long-term cellar performance.
Need Help Choosing the Right Breezaire System?
Contact our wine cellar cooling specialists for expert sizing assistance and model recommendations before ordering.
Ships within 48 hours · Estimated delivery Aug 31 - Sep 5
US$40
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