This brief video shows a quick check on a pressure switch. Although this is a very rudimentary check, the proper check involves checking with a manometer and checking to the correct pressure as printed on the switch.
Frank Alexander is an experienced engineering professional who holds a Master of Engineering degree from North Carolina State University and an MBA from the University of South Carolina. Frank holds licenses in both residential and commercial HVAC, and holds a limited electrical license. Frank is also NATE certified.