In all types of buildings, air balance needs to be carefully controlled. The amount of air that goes out must also come back in. But full-service commercial kitchens cannot rely soley on their HVAC system to supply 100% of the replacement air they need, so an independent make-up air supply is needed.
Air that is removed from the kitchen through an exhaust hood must be replaced with an equal volume of replacement air. If there is not enough replacement air (or make-up air), the building pressure will become negative which can cause various problems such as reduced exhaust hood fan performance or grease and smoke spillage from the hood.
All commercial kitchens can benefit from having a well-designed ventilation system, and now Commercial Kitchen Equipment has even more of the products you need to set up the system that best meets your needs.