Commercial rooftop HVAC units — installation and service. An RTU is a packaged system doing the whole job in one cabinet on the roof, and it is the one thing on this list that is commercial only: restaurants, shops, offices, small warehouses. When an RTU goes down the business is what stops, so these get treated as urgent by default.
How It Works
Get on the roof
Model, age, condition, how it is sitting on the curb, and what access is actually like. Half the cost of an RTU job is getting the unit up there.
Scope it in writing
A written scope covering rigging and access, because that is the part that turns into a surprise on a commercial roof.
Work around your trading hours
Overnight or early, so you are not shut and your customers are not sitting in a hot room. Being open 24 hours makes this straightforward rather than a favour.
Commission and hand over
Unit run under load, readings taken, controls set, and you get told what it will need next and roughly when.