Haven't owned my trailer during the winter. So I turned on my furnace for the first time ever and the motor has a light whizzing/squealing noise to it. Not completely constant as in one pitch but it is a constant noise. I cant tell if its a bearing noise from lack of usage or that the squirrel cage is barely touching something or its just normal. Are those furnace motors hard to remove or mess with? I overheard someone telling someone else that its not worth dealing with them and just to replace the entire unit. Obviously not the choice I'd choose unless there was no other option.

Really depends on Mfg. and model.Some are easier than others to get to motor and fansMotor bearings are sealed..so oiling them won't help.Year/Brand/Model info would be helpful.

I had to replace mine right after hunting season this year. depends on the model, that will tell you the cost of the motor. there are somethings I can do on my TT, furnace is not one of them

Yours may be different, but I have gotten YEARS of extended and quiet life out of squealing fan motors by getting a couple of drops of oil into the bearings. Get creative to reach the bearings: sewing machine oil dispenser, Q-tip taped to a length of wire, a piece of broom straw dipped into the oil, a twig with just the right curves, ...

sum1 wrote:Yours may be different, but I have gotten YEARS of extended and quiet life out of squealing fan motors by getting a couple of drops of oil into the bearings. Get creative to reach the bearings: sewing machine oil dispenser, Q-tip taped to a length of wire, a piece of broom straw dipped into the oil, a twig with just the right curves, ...Because the bearings are sealed, that wont work unless you get the motor out and drill small oil holes into them. For that much trouble, you might just as well replace the motor. JMO

I hope you are not confusing the loud noise the blower usually makes with a possible bad bearing noise.My furnace blower sound like it sounds when you are sitting in the back roll of seats on a MD80 Jet Plane... a real loud GRRRRRRRRR type noise.The loud noise coupled with the 6-8AMPS the blower motor draws sure does keep me from using the gas furnace very much. Roy Ken

Noisy furnace motor | Good Sam Community

18 Replies

KATOOM
Explorer
Nov 09, 2012
Letting it run for awhile sounds worthy of trying. I'll see if that helps.
WDP
Explorer
Nov 09, 2012
Old-Biscuit wrote:
Really depends on Mfg. and model.

Motor bearings are sealed..so oiling them won't help.

Year/Brand/Model info would be helpful.

The blower motors have oil soaked bushings, not sealed bearings, easily and effectively oiled. As mentioned, either sewing machine oil or 20W non detergent motor oil will fit the bill.

WDP
ksg5000
Explorer
Nov 09, 2012
I hadn't used my heater in a couple years and when I finally turned it on during one of my "inspections" it squealed. I turned the propane off and let the fan run for an hour and it hasn't squealed again - might work in your case and didn't cost a dime.
RoyB
Explorer II
Nov 09, 2012
I hope you are not confusing the loud noise the blower usually makes with a possible bad bearing noise.

My furnace blower sound like it sounds when you are sitting in the back roll of seats on a MD80 Jet Plane... a real loud GRRRRRRRRR type noise.

The loud noise coupled with the 6-8AMPS the blower motor draws sure does keep me from using the gas furnace very much.

Roy Ken
powderman426
Explorer
Nov 09, 2012
sum1 wrote:
Yours may be different, but I have gotten YEARS of extended and quiet life out of squealing fan motors by getting a couple of drops of oil into the bearings. Get creative to reach the bearings: sewing machine oil dispenser, Q-tip taped to a length of wire, a piece of broom straw dipped into the oil, a twig with just the right curves, ...

Because the bearings are sealed, that wont work unless you get the motor out and drill small oil holes into them. For that much trouble, you might just as well replace the motor. JMO
sum1
Explorer
Nov 09, 2012
Yours may be different, but I have gotten YEARS of extended and quiet life out of squealing fan motors by getting a couple of drops of oil into the bearings. Get creative to reach the bearings: sewing machine oil dispenser, Q-tip taped to a length of wire, a piece of broom straw dipped into the oil, a twig with just the right curves, ...
old_guy
Explorer
Nov 09, 2012
I had to replace mine right after hunting season this year. depends on the model, that will tell you the cost of the motor. there are somethings I can do on my TT, furnace is not one of them
Old-Biscuit
Explorer III
Nov 09, 2012
Really depends on Mfg. and model.

Some are easier than others to get to motor and fans
Motor bearings are sealed..so oiling them won't help.

Year/Brand/Model info would be helpful.

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Noisy furnace motor

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