Forgive me if this sounds stupid. In the past I have always referred out any work that came to me regarding installing new exhaust hoods for restaurants. I'm not familiar with Health Dept. rules, not sure where to buy the hoods etc.

I am thinking maybe I should try to offer this as an extra service to my customers. I am in Michigan and wondered if anyone could advise me on the best way to get up to speed on the requirements, sizing air balance, best vendors, training classes etc. We currently do residential and commercial HVAC installation and service, so I can handle the work I just want to learn the proper way to do it.