Sufficiently big AC systems often use water cooling because water is more effective at transferring heat than air, is cheaper than other liquids, and unlike oth

Sufficiently big AC systems often use water cooling because water is more effective at transferring heat than air, is cheaper than other liquids, and unlike other liquids is not a massive safety hazard if it leaks. It is why if you want to defrost something quickly, leave it in water rather than in the open air.