Originally Posted by 269afemur
I am looking to put in a wall air conditioner unit this summer. I really need to keep the utility bills to a min. It seems like the better units are 220 volt, but will this be more expensive to run? I was wondering if someone could help me figure out which unit will be better in the long run. Also I am only considering energy star rated units, and only plan to be in this house for a couple of more years.
Usually the smaller units are 110 volts a and the larger ones are 220 volts.
When the units get large enough to use more than 15 amps, then the jump
to 220volts. If you need a 18,000 BTU unit which is 1.5 ton of cooling, then you would be looking at a 220 unit. The higher the seer rating the cheaper it is to run. Paul