Written on: 08/07/2010
The Koolbreeze Climatemaster is a portable air conditioner/ heat pump, It works by taking air from within the room, splitting it into 2 streams (one of colder air, the other of warmer air than the air sucked in) and directs one of these streams out of the exhaust pipe, and the other back into the room (you can change which is which to make it work as either a heater or an air conditioner).
Inevitably, air is sucked in (usually under the nearest door!) from outside the room to replace the air expelled out of the exhaust pipe... This rather defeats the purpose if you are trying to make the room warmer/cooler than the outside temperature.
That's a bit different from a permanent air conditioner (or heat pump), which would have two entirely seperate circuits, and this makes the Koolbreeze much less efficient than a twin circuit system, and much less than advertised by Cottage Stores, except in very highly specific circumstances (e.g. lots of bodies in a small office that you want to cool to the same temperature as the outside world).
I would not buy this product again.