Our home air conditioner died a few years ago (it was 20 yrs odl), the last few summers without AC have been hard. We wanted to put our tax refund into the AC fund. We have a tri level duplex with about 1000 sq feet. I have no idea how much we are looking at for a new unit. How many 'tons' we need for the house. Plus how much labor should cost. Anyone have any current numbers/info to share. Thanks