The solution is expensive but you get what you pay for - and what you get is a very efficient air conditioning system, installed professionally and to a high standard. My property has 2 bedrooms located in the loft (one of which is south facing) which can get uncomfortably hot in the summer. After the last year's summer and having to deal with a noisy and rather fiddly (especially with Velux windows involved) portable aircon I decided to bite the bullet and get Cool You to install a water cooled solution in my property (external compressors were not allowed by the freeholder). I have to say that it's more than adequate to cool (and maintain) the entire upstairs to a pleasant 22C in a matter of minutes which is a huge quality of life improvement. The installation was also very efficient and done professionally - the installers arrived punctually at 8am and were done by lunchtime - I honestly did not expect such efficiency given the rather unusual layout of my property and what I though could have been challenges with finding the right spot to install the condenser. They installed the it neatly in the loft (I initially thought there might be issues with water and power supply but I shouldn't have worried as they somehow did their magic and got water, power and waste sorted) and two wall-mounted units in the bedrooms. There was indeed no mess and minimal disruption, which I was initially rather sceptical about despite the claims on their website. So far the system does the job although I can't comment on the running costs as it's only been a few weeks since the installation. Overall a good experience, job done to a very high standard and delivering on their promise. Yes, it's not cheap but I wouldn't think twice about spending the money given how much more liveable my property now is in the current hot weather.