"David Hansen" wrote in message
...

Moving chilled water means small pipes and thus small losses.
However, the sort of equipment which can produce chilled water will
be more expensive than an "air conditioning" unit bought off the
shelf.

Chilled water is cheap. just bury a few tens of metres of plastic pipe 4
foot down and run water through it..
It will stay below air temp all/most of the time if there is enough soil.
It can be a pain to install using a spade though.