Exhaust fan testing

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Yuneec Pilot

New Member
Jan 15, 2018
44
Bessemer, MI
I'm posting the results of some comparisons I made on three fan assemblies.

I used a water u-tube manometer to measure suction and pressure from each; a digital phototach to check rpm; an Amprobe to check current.

1. NBK 12 blade paddle fan (new)
2. AO Smith squirrel cage 4-3/4" (used)
3. FASCO squirrel cage 4-3/4" (used)

I also swapped out the squirrel cage for a 4.44" 9 blade paddle on the AO Smith.
Fan Test.jpg

12-Blade-NBK.jpg AO-Smith.jpg FASCO.jpg AO-Smith-9Blade.jpg