MQFAM 50 or 80 CFM Fresh Air MachineThe Air King MQFAM fresh air machine offers home builders and developers a cost effective mechanical fresh air solution that helps with humidity and temperature. Contractors and builders now have a practical offering for introducing constant fresh air from outside into the residence, meeting the fresh air CFM requirements. Internally mounted sensors provide limits preventing the intake of outdoor air that is too humid, too hot, too cold or too dry.