hi my extraction fans usually extract enough heat, the fans run through a controller which slows or speeds them up to suit. However when the ambient temp outside is above my desired temps the fans cant keep it cool enough. So my aircon kicks in, cools the room it turns off and ten minutes later turns back on due to the fans extracting all the cooled air. At present I have the aircon set a couple of degreees higher than the fan settings. Should I change this ? should I place the fans on timers and only run for ten out of 30min on hot days? should I manually turn the exhaust fan to its lowest speed and turn the inlet fan off? I would love to know what others do. My room draws and vents to the great outdoors, the constant cycling of the aircon will eventually puck it. thanks