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The performance and life of your WhisperKOOL unit are contingent upon the steps you take in preparing the 

wine cellar. 

Note: Improperly preparing your enclosure or incorrectly installing your WhisperKOOL unit may cause unit 

failure, leaking of condensation, and other negative side effects. 

Wine storage professionals work with licensed contractors, refrigeration technicians, and racking companies to 

build well-insulated, beautiful, and protective wine cellars. WhisperKOOL has put together some useful tips to 

assist in the installation process.  Our recommendations are meant to act as a guide in the process of building 

a proper enclosure.  Your intended location may have specific needs that we do not address. 

Build wine cellar walls using standard 2x4 or 2x6 construction methods and ceiling joists following the 

guidelines of local and state codes in your area.  As a general rule, the thicker the walls and the higher the 

insulation factor in your cellar, the better it will be at maintaining a consistent temperature. 

Insulation is REQUIRED with the use of the WhisperKOOL product.  Standard fiberglass or rigid foam insulation 

is normally used in cellar construction or, in some cases, “blown-in” insulation is used.  It is very important 

that all walls and ceilings are insulated to keep the cellar temperature as consistent as possible during the 

summer and winter months.  The R-factor, or quality of insulation, is determined by the rate at which heat 

passes through the insulation.  The higher the R-factor, the more resistant the insulation is to conducting heat. 

Using higher R-values in insulation will lower your operating costs and unit run time. (R-13 minimum, R19 

recommended, R30 for ceiling and exterior walls)

Vapor Barrier is REQUIRED to prevent the intrusion of water vapor so that the cellar can be kept at the correct 

temperature and humidity. 6 mm plastic sheeting (recommended) should be applied to the warm side of the 

cellar walls.  The vapor barrier must also be applied to the outside walls and ceiling.  If it is impossible to reach 

the outside, then the plastic must be applied from within the cellar.  The most common method is to wrap the 

entire interior, leaving the plastic loose in the stud cavity so the insulation can be placed between each stud.  

All of the walls and ceiling must be wrapped in plastic for a complete vapor barrier. 

In areas of high humidity, such as Southern and Gulf States, the vapor barrier will prevent infiltration of 

warm moist air. The moist air can cause mold to form, and standing water in drain pans promote microbial 

and fungal growth that cause unpleasant odors and indoor air quality problems. If mold is found, remove it 

immediately and sanitize that portion of the unit.