Wine Room Cooling Systems

We are building a dedicated wine room in the basement. The custom wine racks have arrived and will be installed this week. We experimented with a portable cooling unit, but without venting the room shot up to 94 degrees. Thankfully no wine was stored in the room. We’re now looking at other approaches including a unit that would sit next to our other AC units in the basement and then pipe a duct into the wine room. The other option is to place a unit in the room and vent it to the outside.

Any thoughts or recommendations?