How often should a business clean its ducts or kitchen exhaust?
For HVAC ducts there is no single schedule. It depends on how heavily the building is used, how often tenants change, how well filters are kept up and whether there has been construction or water damage. Many businesses check the system yearly and clean when the check shows buildup.
Kitchen exhaust is different. Fire safety standards such as NFPA 96 set how often systems must be cleaned, and the interval generally runs from monthly to yearly depending on the type and volume of cooking. Your local fire marshal and your insurer may also have requirements. Confirm what applies to your kitchen with them, and keep service records. We can tell you what we found at each visit so you have something to show an inspector or insurer.

