[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 ...

DOUBLE CHECK IT: Each blower has a different motor horsepower, blower wheel size, and airflow rating. Make sure you use the correct fan table. November 26, 2018 When you measure static pressure, duct ...

I need to dramatically increase airflow in my Node 304. I'm looking for a very high RPM fan, but more importantly, it needs a lot of static pressure. The reason is it needs to force air in through a ...