Ventilation systems have an average lifespan of 15 to 20 years with proper maintenance and cleaning. Failure to remove heavy grease buildup means the ventilation system will not operate effectively and its service life can be significantly shortened.
The type and volume of cooking, as well as local codes, will impact ventilation systems’ required maintenance. The menu, volume and type of unit will also affect how often ventilation systems should be cleaned and the amount of care necessary for optimum performance.
Grease filters and the capture area should be cleaned at least weekly. Less efficient grease extractors will need cleaning more often.
Twice a year, professionally clean the hood and ductwork. Biannually, clean the exhaust fan, inspect the belt and thoroughly clean the makeup air unit’s aluminum mesh filters. Once a month, replace disposable makeup air filters. Depending on local code requirements and the operation, inspect fire suppression systems at least twice a year to ensure they remain operational.
If the system is unreliable and requires frequent servicing that causes loss of sales due to downtime, it should be retired. Also, if there are major cooking appliance or menu changes that require the rework or total replacement of several ventilation system components, or if an existing facility is undergoing a remodel, a new system may be warranted.
