Most good builders follow a simple but effective construction strategy. They construct homes that are extremely tight, with a well-designed ventilation system. The truth is, you can save more cooling and heating energy by living in a tight house than with a ventilated one.
There are three ways of achieving mechanical ventilation: exhaust-only supply-only, and balanced.
Exhaust fans (bathroom, whole-house fans or kitchen fans) “depressurize” the area, leading to infiltration from the air outside through different openings and cracks. Places where winters are intense, exhaust-only ventilation is enough as they do not cause damage that may happen because of moisture. As summers are shorter and relatively moderate in places with cold climates, the building is very unlikely to get marred by drawing hot and humid air. On the contrary, exhaust-only strategies are not the best option for places with hot weather conditions.
Supply-only systems pull clean outer acontinue reading →