When to Open Skylights?

Keep the skylight open in the evening if it is cooler outdoors than it is in your home. This also helps cut down on air-conditioning costs, as it is frequently recommended that air conditioners be turned off during the night to save money and take advantage of the cool night air.

Does opening a skylight cool a room?

In less than 30 minutes your home will be as cool as the outside air. And when this is still too hot for comfort, leaving skylights open an inch or two allows cool, air conditioned air to make it's way upstairs as the hot air bubble is allowed to escape.

Should I open my skylight?

Using passive cooling, skylights will help you maintain a comfortable in-home temperature. The chimney effect can further assist this ventilation. If you have your skylight open, then open a window on the first floor of your home and the cooler air will flow in and actively push the warm, stale air out of the skylight.