What happens during a commercial hood cleaning?

Step by step

• Cooking equipment is covered and the area is wrapped in plastic to catch runoff
• Filters come out for soaking or pressure washing
• The hood interior and plenum are scraped and degreased
• Ductwork is cleaned through access panels, as far as it can be reached
• The rooftop exhaust fan is cleaned, and often hinged if it isn't already
• Everything is rinsed, the kitchen is cleaned up and filters go back in
• A dated certificate or sticker goes on the hood, noting any areas that couldn't be cleaned

Ask for photos

Good companies take before-and-after photos, especially of ductwork and the fan that you can't see yourself.