I just finished a job that has already gone astray- due to the exhaust fans being imprpoerly sized.
This has me thinking- perhaps I ought to, in the future, be able to "size" such fans (as well as other HVAC equipment) so that I can make sure I can do my job properly.

With this particular job, I 'dodged the bullet.' I have room in the panel, room in the pipe, and adding contacts to the Ansul system is no big thing.

Can anyone suggest a site, or method, for sizing range hoods?