Posted By Charley Farley-Trelawney Ged Complete nonsense the manner in which you have described. I would say to you there are two options bearing in mind I don't know what make of unit you have. I assume the condenser is the other side of the wall or on the roof/plant room etc, and the blower is wall or ceiling mount. Normally there would be an external pump wired in to remove the water when the leveller cuts in. In Server rooms and the like I prefer to eliminate the possibility of the unit soaking the equipment and causing much sparks, fire lost info etc. These units can be easily adapted to have a permanent drain pipe such as over flow pipe that eventually joins a stack somewhere so you have a constant gravity situation for getting rid of liquid, its easy, safe and maintenance free, do ensure however if you fun into a stack that it is substantially trapped. If you need more, or some photos of one in place email me and I will send you specifications. CFT