I am back Natalie...watch out!
Internet light is still jumping all over the place but maybe it is just nervous today.
I would be like you and want to sell the other house before a big investment like that as well as long as you have a window unit. Gives you time to investigate. We got a new furnace a few years ago and then when we considered doing AC for the whole house it turns out that furnace was not two speed so tying in an air-conditioner would not have worked well for the high ceilings etc. we have so we would have had to replace the new furnace and then get the air combo. Too wasteful, money wise so research well. Stuck some window units in to back up our evap system and a mini-split for the bedroom. You might investigate those for the house. They are incredibly efficient! If you are not in a room no need to turn one on in it.
