Pressure tested the heat exchanger yet? No sense sticking a motor in if the heat exchanger fails inspection.
Anyone ever replace the 3/4 hp blower in the g/14q.Lennox say`s I have to buy there's it`s heavy duty and any other 3/4 hp motor will fail fast.Well the motor they sell is close to 350.00 and they don`t have one here close.It`s fricking cold out here in Ann Arbor.My normal supply house has a 3/4 hp motor and cap for under 200.00 that will fit lennox mounting bracket.
Pressure tested the heat exchanger yet? No sense sticking a motor in if the heat exchanger fails inspection.
yes it's expensive, others will fail.
remove your pricing and pressure test the hx.
The wire designations should be listed on the tag on the motor body. What is the motor part number?
Yellow is usually common if no white.
Replacement motor will probably fail soon. I'd do OEM only.
BTW, did the furnace pass the pressure test?
Beware of advice given by some guy on the Internet.
Id replace the whole furnace parts becoming mor and more obsolete be much better in Long run to replace. Great rebates to replace!
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AO Smith has some Blower Motors that have a yellow wire as common
Also they sometimes use purple and of course white
I have seen the statement "... yellow/white for common..."
But as stated, there should be a reference on the motor itself!!
Agree with changing the furnace, once you have to change out a spark plug youll be wishing you had
Have you tried removing one that was siezed?
To answer your original question....on that furnace the oem motor is the only one to use. Any other motor will fail quickly. I don't know what's so special about that motor or the design but an aftermarket motor will not last.
Can not truly answer that as I never had a problem getting them out. Back in the late 90's (98-99?) I was performing 4 -6 pulse inspections a day and installing update kits on every one. gas orifice, gas flapper, air flapper, (both were assembly's not material) spark plug and wire and last sensor. never had one I could not get out. some were harder than others but easily done in 5 minutes.
and yes you have to use the motor from lennox as any other will not make it 2 years. Probaboy not 1 year.
dogboy
I have replaced motors on the 4/5 ton drive pulses after someone had already replaced it with a generic motor. Maybe only 5 -7 times but when I was with a larger lennox dealer other technicians saw this also.
To me this kinda goes with tranes outdoor fan motor needs to be replaced with the oem as every one that was not oem installed by the company I was with at the time would fail with in a month or two.
Just my experience. ??
dogboy