register vent fan?
I have a split level house in coastal california - no AC, but in the summer, south and west facing windows in the upper level (livingroom and kitchen) allow it to heat up in the later afternoon and evening on really hot days. We don't have enough of those to warrant AC, so I'm trying to come up with another solution. My father suggested installing a register vent with a fan on a high wall with attic behind it, to vent out to the exterior. Would that work? Would it be really noisy?