Ok this is my first "commercial" job its new construction. One of those friends that we all have when they need a job done called me today...
He is adding a new addition to his restaurant its approximately 3000sq ft 9ft ceilings average insulation wide open floor plan going to be used as a banquet space that will hold approximately 150-200 people which is probably over shooting the capacity. Im going to look at the building tomorrow and see if im up to doing the job. He is a cheap skate which is probably why he called me to hopefully get a "good deal". Basically based on the info above can any of you give me some tips on sizing this space before i go check it out. He wants a split system seems like my rough calculations are coming up somewhere within 60k and 70k btu's I maybe way off on this but thats why im here to see what someone more seasoned has to say about it. I just need some rough idea so i can give him a price range to expect.