Whirly Birds are a very effective way of expelling hot, moist air from your attic. They work on a convective process where hot air is drawn from your intake, and expelled out the peak, through the turbine, at high speed. When your turbine is spinning, you know air is being exhausted from your attic. Make sure you don’t cheap out on your turbine, and get one (such as the whirlybird brand) that has ball bearings instead of a plastic sleeve. They last longer, and are less likely to make noise and get off balance.

Skylights can provide interior living spaces with the warmth and brightness of natural daylight. Their ability to enhance almost any interior has made them increasingly popular. Installing a trouble-free, energy-efficient skylight can be the best thing you do for yourself, your family and your home.
Moreover, daylighting, in combination with energy-efficient lighting, can reduce the lighting power density in homes, schools and commercial and office buildings without lowering lighting levels.