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What Happens When Facebook Heats Your Home
(www.wired.co.uk)
This is a most excellent place for technology news and articles.
An AC can only cool the home, while a heat pump can both cool and heat a home. They are different things, and worth looking into.
That's just an air conditioner. The difference between an air conditoner and a heat pump is that a heat pump has a reversal valve that allows the refrigerant to run backwards through the system.
My point is someone is using a whole bunch of words to say "I'd air-condition my server room". It's not exactly a ground breaking idea.