In the past, some well-meaning programs targeted at reducing energy consumption did not adequately account for the negative effects that increased tightening of the building envelope could have on IEQ (e.g., the reduction in passive ventilation resulting in excess moisture buildup within the home). As buildings became more airtight in an effort to conserve energy, indoor air quality suffered and moisture and mold problems arose. Fortunately, many green building programs today stress the importance of health by promoting (1) better ventilation,
(2) avoidance of materials which give off volatile organic compounts (VOCs), and (3) tighter construction methods and the use of integrated pest management (IPM) practices in property maintenance that would be expected to prevent the migration of pests and moisture into the home.