ransley wrote:

Just wondering if anyone has replaced their conventional
furnace / HVAC fan motor (PSC, single phase, etc) with one
of the new ECM motors to realize a reduction in your
electricity bill.

you need the electronics to run it, you cant just replace it my
Lennox guy said

I'm pretty sure that's not correct.

From what I can tell, all the electronics are inside the motor. You
hook up the main AC supply directly to the motor, just like a
conventional AC motor.