TLC Resource Portal

TEMPERATURE FLUCTUATION AND VARIANCE

This is Richard, technical service manager for the Vinotemp and Winemate brands.

Yes, to stabilize temperature and minimize air temperature fluctuation, you'd want to add a load of thermal mass.
By means of conduction, the cold bottles and cold liquid will help unit to stabilize and maintain cabinet's internal temperature.
Once fully loaded and allowed to run a full 24-48 hours, the cabinet's interior and contents will acclimatize to the cooling capacity of the unit.

In addition, it may be helpful to know that the unit is programmed with a 4 degree temperature differential. 
This would mean that if your unit is set to 55 and reaches 55, it will cycle off.
At a 4 degree increase in temperature, the unit will cycle back on and pull the temperature back down to 55 and cycle off once more. Depending on the ambient temperature of the day, the timing of compressor cycling can vary between 15-20 minutes.
The time required to reach the desired temperature will vary, depending on the quantity of bottles, temperature setting and the ambient temperature.

Yet please be advised that air vs liquid temperature work within tolerances.

The air temperature indicated and displayed on the unit is based on the location of the sensors inside the unit. 
Temperature seen at each point away from the sensors may vary slightly from the actual temperature displayed. 
Please note that there may be a 4-7 degree air temperature fluctuation depending on the ambient temperature and load of bottles.
 
The temperature fluctuation seen would be the air temperature, not the actual bottle/liquid temperature.
The air temperature will vary a few degrees yet the liquid temperature will have minimal change by half a degree or 1 degree.
Air would be less dense and has less mass than liquid and more susceptible to temperature variance. 
Small differences in temperature are necessary for the unit to work properly.
When the cellar starts a defrost cycle, the temperature rises slightly.
When the cooling system resumes working, the temperature cools down.
Such changes happen over a short time and their influence is too minimal to affect wine preservation. Liquid tends to keep an average temperature by physical law.

Did you find it helpful? Yes No

Send feedback
Sorry we couldn't be helpful. Help us improve this article with your feedback.