I have a project in which an auto repair garage is required to be ventilated at 1.5 CFM per square foot. The quantity of exhaust air is significant. In order to maintain habitable temperatures in a cold environment, there needs to be an equal amount of heated make-up air. We intend on using demand ventilation with carbon monoxide sensors to avoid operating the exhaust and make-up air systems. This type of demand ventilation is allowed by the code but not mandated. Would there be any objection to utilizing this system on the proposed model and not on the baseline model?