Many new restaurant owners or commercial kitchen managers struggle to know how often their exhaust hood fans and ducts should be cleaned. Cleaning the exhaust hoods, ducts, fans and filters are not only important but are required by the law under fire code NFPA 96. Failing to properly maintain the kitchen exhaust hood system can result in fires, unpleasant odors, premature breakdown and catastrophic loss. The grease that builds up in the system provides ample fuel for a fire that can burn at an incredible heat. Most exhaust systems have a fire suppression system within the hood and at the…