Home Design Guides: Energy efficiency, Ventilation

How to measure infiltration and air tightness

Part of establishing how well your home fares in terms of passive design is to establish how 'tight' it is. Learn more about how to test how much air leaks from your home.

Heat retention and ventilation

Hot air rises - and for that reason, how you manage the area under your roof is vital to your home's climate control efficiency. Find out more about ventilation and controlling heat.