Any Advice on a Dehumidifier

Twich22 thought this was worth mentioning said

The Humidity in my wine cellar sits at around 86%. I am pretty worried that its going to start rotting long before the wines in there reach maturity. Has anyone use a Dehumidifier? Do you have any recommendations?

From what I have looked up, it looks like I will probably need to get one that requires you to empty a water basin when it gets full, since I dont have a drain in my cellar. How often does such a basin need to be drained? Also, how big of a unit do I need?

My cellar is about 8 feet x 20 feet, give or take.

Thanks in advanced!