[Editor’s note: When we last visited with lead installer John and his helper Charlie (The NEWS, March 5, 2007), they had just learned the hard way that there’s a lot more to sealing ducts than just ...

AIR IT OUT: Fluke’s 922 Airflow Meter/Micromanometer is one tool capable of taking static pressure readings. These readings are essential for evaluating a system’s health and exposing poor ...