Mike Cappuccio of N.E.T.R. shows the value of regular maintenance on your rooftop commercial AC unit, and walks you through the areas that are cleaned and checked during a maintenance visit.
Great video. Solid and thorough, period! That is straight up the gospel ( Old School work ethics ) in other words do not half ass it. True PM right there aaaand zero skimming. Thank you for making a true maintenance video.
Nothing against the way they check the refrigerant but the way I was taught and suggest is to do it by sub cooling and superheat. I was taught you should never hook up to a unit unless you have a suspicion that it's low such as evidence of oil.
