Hood systems in commercial structures shall be maintained in accordance with this code, the manufacturer's installation instructions, and NFPA 96. Hood systems shall be regularly serviced and cleaned to prevent the accumulation of oil, grease, and other harmful, combustible or flammable substances. The cleaning process shall be completed by an approved third-party cleaning company on a basis not to exceed that stated in NFPA 96. If the code official or health officer determine based on observations that the hood system is not performing adequately or that material buildup is observed, the code official or health officer may order that the hood system be cleaned at any time or that the cleaning frequency be reduced going forward.
At the time of cleaning, the hood system shall be marked with an inspection tag supplied by the third-party cleaning company. This tag shall remain on the hood system until the next cleaning. The tag shall at a minimum contain the following information:
1. 
Name of the third-party cleaning company
2. 
The business address of the third-party cleaning company
3. 
A valid telephone number for the third-party cleaning company
4. 
The name of the facility being cleaned
5. 
The address of the facility being cleaned
6. 
The date of the cleaning
7. 
The name of the technician doing the cleaning
8. 
The signature of the cleaning technician
9. 
Notation if there were any problems with the equipment observed at the time of cleaning
All records of maintenance, cleaning and repairs shall be available for inspection by the code official and shall be maintained for a minimum of 5 years by the property owner.