Quote Originally Posted by flyinhighaj
In a sealed Room which would be Best? Installing a Window A/C unit in the wall (pushing cool air in) or placing a Portable A/C unit (pushing hot air out and blowing cool air) in the Sealed Room.
If you want your room to stay sealed, then you must use a window unit. A window unit uses outside air to disperse the heat from the room via the outside heat exchanger (that radiator looking thing that gets hot on the back of a window ac unit). A portable unit uses inside air through the heat exchanger that it vents outside, along with any odors from the room. Unless you get really fancy and get a portable unit that has an air inlet for the exchanger, but the price goes up for that.