A leaking air conditioner/heat pump likely means that there is a clog in your drain hose.  When a drain has a clog, the moisture backs up into the unit and then has to come out somewhere – usually down your wall!  Clogs in the drain hose occur when an air conditioner/heat pump has a build-up of contaminants on the inside that dislodge and then stuck in the hose.  When this happens, you need to turn off your air conditioner/heat pump immediately and call a HydroKleen technician to service your unit as soon as possible to prevent any permanent water damage to your home.