I had a question on how much should I charge for a good bid for hood and vent cleaning. The system components; will consist of interior and exterior surfaces, hood, grease extractor, dampers, grease filters, louvers, cupolas, access panels, duct work

Monthly-
5X20, 2X8, 11X5, 5X12, 2X10,

Quarterly
3X4, 1.6X6.6
Semi annual cleaning
4X15, 5X12, 11X22, 13X4.6, 9X6, 6X6, 3X6, 5X7, 2.6X 5

Most companies offer free estimates. Www.carolinahoodcleaning.com offers free estimates for restaurant exhaust hood system cleanings.