A water cooled condensing unit (the outside part of a split A/C system) would work fine, but it will use lots of water. An air cooled condensing unit will use a fan to remove the heat it removes from the grow room. The effects of the heat removal can be minimized by blowing the hot air into thick undergrowth or bushes. There is no way to use a water cooled device and not use a lot of water. Hope this helps.
TANKJR Reviewed by TANKJR on . Air Conditioning Hi I would like some advice on cooling my sealed room, I plan on using split a/c in a grow room for cooling and my question is does the outdoor unit produce heat because people are against a/c with an exhaust because it produces lots of heat. Air conditioning Is not very popular in England since less than 5 percent have it so FLIR might be a bit suspicious or does the outdoor unit not produce heat, in which case I can hide it from the eye in the sky. Any Advice Needed Rating: 5