We've had a customer complaining about airflow issues with a public restroom. Limited supply and exhaust air. I was the fourth tech out in the last two weeks. Found a extremely plugged exhaust fan screen and a very large gap at the supply duct drop in the RTU. Dealt with these issues only to have a massive return duct restriction also. Going back with a scissor lift to access the ductwork tomorrow and fix that. As @hvacrvideos always says, big picture diagnosis. The big problem is often two or three smaller issues accumulated.

Posted by Ryan Lineberger at 2021-03-12 00:55:43 UTC