What Is Make-Up Air and Is It Legally Required for Hoods Over 400 CFM?
Understanding the mechanics of kitchen ventilation is critical for home safety, specifically when considering whether make-up air and is it legally required for hoods over 400 CFM. As modern homes become increasingly airtight for energy efficiency, the powerful exhaust fans in our kitchens can create significant pressure imbalances. This article examines the technical requirements, the…