replying to Ray K., jack wrote:
The answer lies in the pressure differential created by the furnace. The air
is flowing from after the fan (where the pressure is high) to before the fan.
The flow is counter intuitive.

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for full context, visit https://www.homeownershub.com/mainte...um-478189-.htm

"jack" m wrote in message
...
replying to Ray K., jack wrote:
The answer lies in the pressure differential created by the furnace. The
air
is flowing from after the fan (where the pressure is high) to before the
fan.
The flow is counter intuitive.

--
for full context, visit
https://www.homeownershub.com/mainte...um-478189-.htm
Too late and very sad. Ray K died 15 years ago after the humidifier broke
loose and crushed his head.