Why put Data Centers in HOT Phoenix?

[techlists at phpcoderusa.com]

I get the labor pool is probably a draw.

I've always wondered why companies want to build data centers in Phoenix 
given the extreme heat.

Last year we had a month with daily highs of 116 degrees.  That means 
lots of A/C to cool down all that heat.

I wonder why someplace cool like Flagstaff is not more attractive.  I've 
been there twice.  Once in October and it was freezing and once in May 
and the high of the day was 60 degrees.

In a place like Flagstaff all that one would need to do is pull in the 
cool outside air and your center is cool.

Seems like that would save a bunch of money.

Keith