I think a lot of people are dissalusioned by air conditioning, let me just make a few comments. It runs on heat aswell as cool so you can use it all year round, set it to an automatic temp of say 20-22 and just leave it and it will maintain that room temp. Also it is energy rated for efficiency as A rated and is far cheaper to run than gas central heating and as i say with gas if you heat a room it may get to hot so the heat is wasted, with air con it stops heating when temp is reached. Air con will reach the required setting within 5 mins and not 30-40 mins on heat if it was winter and really cold therefore big savings all round. I have 3 fitted in my house and have shut all the rads off in the rooms they are in, and what a difference it makes. The rooms are all set at required temps.