Relates to the standards for openable windows in residential units

This bill allows new residential units to meet openable window requirements by installing mechanical ventilation systems that follow specific engineering standards instead of relying solely on physical windows. It directly affects developers and builders of new homes or converted buildings by offering an alternative way to satisfy air quality and ventilation rules. The law clarifies that local fire and safety codes requiring actual openable windows for emergency exits must still be followed. Changes made to the bill during its final review in the Senate did not alter these core provisions.