Has anyone retrospectively fit aircon in a loft conversion?

[redjam]

OK so we are having our annual conversation about getting aircon fitted, as our west-facing loft turns into an ACTUAL FURNACE whenever the temperature goes over 25 degrees. (It's 33 degrees in here now and that's with the blackout blinds closed all day.)

We have Velux windows that are hinged in the middle so I think a portable unit is out of the question as it would be a nightmare with the vent. So maybe we just need to bite the bullet and get a proper unit installed. Has anyone had experience of doing this, particularly in a loft? Any things to watch out for/recommendations for installers, and would you be willing to say how much it cost (I'm seeing wildly varying prices quoted online)?

I know it's a lot of money for only a few days a year but as the summers are getting hotter it's becoming more of an issue every year. Any advice appreciated!

[Soizic]

We used a firm called Smile air con to do ours. Very simple and quick. Also there is another firm in Herne Hill we have used to service ours. Couldn’t live without it now

[HeadNun]

It's a good time to be in the AC business. Soizic, may I ask how many units you had fitted and roughly how much it cost? 

[Bob Buzzard]

I’ve got a full loft conversion - it’s massive.

[redjam]

14 hours ago, Soizic said:

We used a firm called Smile air con to do ours. Very simple and quick. Also there is another firm in Herne Hill we have used to service ours. Couldn’t live without it now

Thanks, Soizic. Was yours in a loft? How did they vent out the pipe for the hot air? And would you mind sharing (via PM if you prefer) how much it cost? I want to get a vague idea before deciding whether it's worth calling in a quote. Tbh at the moment I would consider selling my own children to pay for it.