Do you have that same problem sometimes? All day while you're at work the house heats up because of the warmth not going anywhere and when you're finally home after a days work you just can't leave the doors and windows open long enough for it to cool down to a comfortable level. This is the case with my small appartment also and I'm afraid there's nothing I can do about it really. I'm just too long away from home for work so I cannot get the place to a nice cool temperature again. Every year I try to keep it cool as long as possible but when the heat finally makes it into my home it's there to stay. As soon as I close a door or window I can feel the warmth creeping up on me because everything inside is still warm. I should be able to cool the entire place down for a couple of days in a row for it to stay cool I guess, but that's not very likely to happen.