Concrete Ventilation Tiles

Living in Sydney's western suburbs, Summer is unbearable. We used to have our air-conditioning timed to come on around 2pm so the house would have cooled down by 6 o'clock when we came home from work. Since installing the ventilation roof tile system, we turn it on when we get home and we only need it on for a couple of hours. Thanks for a great product that really works and saves energy and money.