Breezaire WKL 4000 1000 Cu. Ft. Self-Contained Wine Cooling System, Sentry III+ Controls, Through-the-Wall

The Breezaire WKL 4000 is a self-contained, through-the-wall wine cooling unit sized for cellars up to 1,000 cubic feet. It arrives fully charged with R134a refrigerant and is ready for use once installed in a wall opening and plugged into a standard 115V GFCI outlet. Each unit is hand-assembled in the USA and built to deliver stable temperature, controlled humidity, and low-vibration operation—key factors for proper wine aging in both residential and commercial cellars. Breezaire has produced these systems since 1985, and current models are direct replacements for any unit built during that time. This is important if you need to retrofit or replace an older system without modifying your cellar.

4,000 BTU Cooling with 48°F to 63°F Adjustable Set Point

The WKL 4000 maintains cellar temperatures from 48°F to 63°F, covering the full range needed for red, white, or mixed wine storage. The Sentry III+ controller comes preset at 55°F, but you can adjust as needed. While holding your set point, the unit manages humidity between 50% and 75%. This range prevents corks from drying out and labels from peeling, while also avoiding mold growth on racks and cases. Consistent humidity protects both your wine and its presentation. The system delivers a gentle, even airflow to avoid sudden temperature swings that can damage wine. The WKL 4000 is designed specifically for long-term wine storage, not for chilling bottles to serving temperature or for use in cabinets that are opened frequently.

Sentry III+ Electronic Control System

Each WKL 4000 includes the Breezaire Sentry III+ digital controller, which displays cellar temperature on a large green LED readout. You can adjust set points directly using the SET, COOLER, and WARMER buttons—no tools needed. The controller saves your settings in permanent memory, so you do not have to reprogram after a power outage. An automatic compressor restart delay prevents short-cycling, protecting the compressor after power loss or thermostat changes. The high-temperature alarm alerts you if the cellar exceeds your set threshold, and automatic overheat protection will shut down the unit if temperatures approach 75°F, helping safeguard your wine in case of a compressor failure or blocked condenser. The standard air sensor regulates temperature, but you can add an optional bottle probe to monitor actual liquid temperature for more precise storage. If a sensor fails, the display shows an error code, and you can keep the unit running manually until repairs are made.

Vibration Control and 61 dB-A Sound Level

Wine requires a stable environment to age properly. The WKL 4000 uses vibration-dampening mounts throughout the cooling system, and each unit is hand-assembled and tested to minimize vibration that can disturb sediment and affect wine quality over time. The unit operates at about 61 dB-A, similar to normal conversation, so it will not disrupt nearby tasting rooms, offices, or living spaces. The metal cabinet is designed for flush wall installation and does not require plumbing, complex wiring, or on-site refrigerant work, making setup straightforward.