I got a cheap Homebase one 3 years ago now (for just under £200) - it gets used literally for 1 or 2 weeks a year, but I'm glad I have it.
This one I think... In fact I'm just used it for the first time today. I had planned to store it in the loft when not being used but it weighs a flippin' ton!
+ My PC is in the 2nd bedroom which gets the sun from midday until sunset. Even keeping the blinds closed it'll get to the high 20s and in the summer opening the window just lets equally warm air in. Combine that with switching the PC and monitor on and you either put up with sweating, or buy aircon!
+ You can also really notice the lack of humidity when it's been running.
+ I run it for an hour before going to bed and it helps me sleep on those rare hot summer nights.
- Uses a lot of electricity - about 700-800 watts when cooling, and about 100 when just blowing the fan.
- It's noisy when cooling too - I had planned to get 1 in each bedroom to run overnight but I doubt I could sleep when it clicks on and off.
- It doesn't cool things THAT much - in a 4x5 metre room it'll only really get it down to 22 or 23oC. But in fact that's fine in the summer when it would seriously be 30-something otherwise.
- You have to open the window about 6 inches to let the exhaust hose out. I'm looking at running it into the loft instead and just did a search on google which funnily enough brought me to this thread
