External Static Pressure: Do HVAC installers actually measure this during normal installs?

Some companies have someone who does some math and has an understanding of the physics involved and the equipment's design principles and limitations. They pre install detail and post install check up on their installers, per job, on many important details. Actual static pressure vs design is just one of them. Some have a person or persons who learn the harder way and have developed rules of thumb or learned to copy someone else's rules of thumb. I've seen this first hand at a few companies. This second type relies on a form of cookie cutter design that is pushed or pulled to suit any new design problem. Generally it works well enough for standard design problems, as long as the rules are good enough and equipment doesn't change on them. They have happy customers and turn a good profit most of the time but they can't trouble shoot or avoid complex problems as well as the other types. Of course it's not black and white. Most of us are a variety of gray. Some are fairly static and know enough to do what they need to well, while others are always trying to get better. Toss in some glossy well developed sales technique training and it's harder to know who you are getting. Trouble is many home owners are completely unaware of the unique difficulties of their design problems and so are many sales guys and installers. Then awkward learning opportunities present themselves.

@pecmsg I'm sure you are aware that the money a company charges doesn't guaranty that they do any of that. Lidar scans and ipad apps are cosplay for many. The Manuals can be garbage in and garbage out but you hit the nail on the head, if they do them, they probably care about getting it right. Manuals are great post install proof of due diligence and useful when trying to determine what went wrong. Many calls are made during work by installers that differ from plans on paper. It's tough out there to find high level skill for both ethical employers and customers.