What does a proper make up air system prevent?

A proper make-up air system is essential in commercial kitchen environments because it helps to eliminate negative pressure. Negative pressure occurs when the rate of air being exhausted from a space exceeds the rate of incoming air. This discrepancy can lead to a variety of operational issues, including difficulty in the proper functioning of exhaust hoods, potential backdrafts of combustion gases, and even reduced efficiency of gas appliances.

By providing an adequate supply of fresh air to replace that which is exhausted, a make-up air system helps to maintain balanced air pressure within the kitchen. This not only ensures that exhaust systems operate efficiently but also enhances safety by mitigating the risks of harmful gases being drawn back into the work area from other parts of the building. Therefore, the role of a make-up air system in preventing negative pressure is crucial for a safe and effective kitchen environment.