Josh
When I owned a restaurant in NJ I had a hood cleaning company come out with 6 guys for a 20foot hood,that was in a 1 story free standing building.It was the owner,a little cigar smoking loud mouth,and 5 hungover ex-convict types(still smelled the booze on three of them).They did not use any plastic to wrap the hood,got water everywhere,broke one of my light globes,pressure washed the filters in my 3 bay sink.One of the workers fell off a 6' laddder,but did not get hurt(probably had enough booze still in him he didn't feel it!) the guy on the roof slipped and fell,but did not fall off.After four hours of this(the hood was cleaned 6 months previous) the little commander yelling at them the whole time(was probably just paying them beer money,they were not very motivated)They did a half ass mop job(no shop vac,just a sgueegee) leaving water under the cooking appliances,and the floor all greasy ,I was presented with my hood sticker,prohood cleaners or something along those lines were their name,this was six years ago.Were they the cheapest,no they charged me $350,the price range of the companies that actually answered their phones was $225 to$550.I needed it done that week,it was a monday and I was opening on thursday,I just bought the place and I needed a current hood sticker for the fire inspector to pass me.Some companies I called in the yp's were out of business,some did not answer their phone,just had an answering machine,some could only do it on the weekends(weekend warriors),and some were booked up for two weeks.So I got the prohood cleaners lol! they were available,and gave a discount for cash,no receipt,wink,wink!I told him I needed a receipt,which he didn't like "cash was king!" I was told by the little commander,but I told him I could give him a moneyorder which I did.The moral of my story(all true)is that it can be done by one person on some jobs,but for safety sake most agree 2 is better,and three is better yet.As David stated on large complex jobs for safety,time expediency,and just the large scope of some jobs 4 0r 5 guys,who know what they are doing are required.In my experience in the food service business most hood cleaning crews almost always consisted of 2 people,on non complex jobs
Take Care
JIM