Cleaning up is important in resi & small 1 trade comm type jobs. Leaving construction debris (windows) is a major 'no-no' in a lot of towns, where there is a contractor involved.
As to your quest for an HVAC contractor, IF you were around here, I have a personal friend who would get to you, no question. And, he is fair with $$$ and does excellent work.
As to HVAC and ECs, there are quite a few that have electrical contracting lic. here, as a Lic. EC is required for AC install or replacements. One in particular does HVAC, Electrical, & Plumbing and has Elec, Plumb, & HI licences. Techs all wear white shirts, blue pants, and 'booties'!! He gets top $$, and guarantees results within 24 hours, or it's 'free'!
A few advertise with emphisis on 'clean'. These are mostly 'big' shops.
