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Dear Dr. Vinny,

After three years, condensation has started forming on the outside of my wine cooler. Why might this be happening?

—Lee W., North Charleston, S.C.

Dear Lee,

Just a quick recap on condensation: It's what happens when warm, moist air comes in contact with cooler surfaces. It’s why a glass of ice water or cold beer will “sweat” the moisture that’s condensing, since the cooler surface can’t hold as much moisture as the warmer surrounding air.

In order for condensation to be forming on the outside of your cooler, that means that the cold inside is somehow getting to the surface of your door. Presuming that there haven't been any changes in temperature and humidity in the room that the cooler is in, and that the cooler itself isn't getting too cold, it could mean that the seals around the door are leaking.

—Dr. Vinny

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