I have central air in a rancher (one floor), and the living room is on one end of the house. That room is on a slab, and has always been noticeably hotter in the summer and colder in the winter than the other rooms. It's well insulated in walls and ceiling and has a ceiling fan. When my a/c was installed, keeping this room cool was a challenge the contractor took seriously. They installed a larger register and ductwork, and a return vent. The room cools, but not like the rest of the house, so I've been keeping the thermostat lower than I'd like because I spend most of my time in the living room. And humidity does me in, so I occasionally turn the thermostat down because of that, not the heat. I don't have money to make any additions/changes to the a/c system, so I'm looking at two options: install a doorway fan to move warm air out of the room (bringing more cool in) or getting a dehumidifier for the room. Which would help more?