What is the best option for cooling a house upstairs? We are considering purchasing a home that has a second story. It has a 2 year old central air unit, and the upstairs is HOT! There are two bedrooms and a bathroom upstairs, and we're not sure of the upstairs square footage. We'd like something more stylish than a window unit. We've heard about mini-splits.....some not so good things about those. We've seen portable air conditioners. What is the best for getting the job done and best for my power bill.....and what would be the best in intense summer heat? Thank you in advance!

I've got an apartment which is a little humid. I don't know what the number is, but I'm getting something to measure it. I use the bathroom fan, but its just a humid area. Is it reasonable to try and dehumidify the apt. by turning the A/C off (letting the apt get very hot and then cooling it down again) and/or to increase the A/C to a colder temperature and let it warm up? The idea being to cycle the a/c unit a bit more. Any difference between the two? I don't go out too much so it is on all the time. No real problem except that it can be hard to evaporate water off dishes and the sink. I don't want to invest in a dehumidifier because its a rental and besides no place to put it.