Quote:
Originally Posted by red-beard
There are 2 ton package units, already filled with freon, for about $1300. All you have to do is cut 2 holes in the wall, run a duct/diffuser in the ceiling, and a return line to the outside unit. They are not the most efficient units (13 SEER) but you're not going to keep it on all the time.
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13 SEER is more than good enough. The vast majority of A/C units today are likely less than 13 SEER. Based on my ammeter, you'd pull less than 10 amps (likely under 8 amps) of current to run a 2 ton unit. 2.2 kw per hour. $0.12/kwh, so 25 cents per hour at most.
Best bet is to keep your upfront costs reasonable, and do a quality install. Ductless would be a great way to go, but a package unit may be cost competitive.