No - my installation is about 2 weeks old

And mine's not quite as described - I went for plan B and built it in the study into a cupboard unit. I also extract the air instead of intract(?)ing it!

(I was too lazy - the air outside is almost always cooler than inside - especially in a rack - and that way the rack heat is kept in the house rather than being expelled. I'm going to turn my fan around....)

I've had the cupboard shut and set it to 27degrees. There are 3 server PCs a UPS, a switch, a VCR and a Sky box in there. Plus other things. The fan was coming on for about 5 minutes an hour when the room was quite warm. Surprisingly effective.