Home Owners are encouraged today to improve your energy efficiency through passive design. This is possible through good ventilation in the warmer climates and insulation in the cooler climates.
To improve air flow and air quality you should consider cross ventilation by having windows strategically placed in a home, within one room and from room to room. As well, louver windows encourage ventilation by capturing any air flow around you house. If ventilation isn't possible, consider installing ceiling fans to help with the air flow.