Depends on your objective, if its to run two 1 Th miners and loose money every month and just collect a half a bitcoin a month to save for a rainy day, its a great idea, however if you want to actually do more than that it is not.

Heat.. Summer will overheat, winter will be fine in the north
2 TH of mining power max on a 20 amp circuit if its dedicated to you, which its not, so it will pop the circuit when your neighbor uses his power drill on the same circuit as you...

Gross profit, $120 bucks   (per 20 amp dedicated power circuit) /mo.
Expenses, Internet power rent  $50+$250+$75
Monthly losses .;;; you get the idea, i don't really have to add it up for you do I? lol

so now you have all the info you need before going into the Self Storage Mining Businesses =)

ChiMine
Chicagoleo
$74/kw