Furnace Fan Motor...Repair or Replace?

« back to Heating, Ventilating, Air Conditioning (HVAC) & Water Conditioning forum

Topic by DylanC posted 01-28-2014 04:06 AM 5687 views 0 times favorited 4 replies Add to Favorites Watch
View DylanC's profile


8 posts in 3900 days

01-28-2014 04:06 AM

Tonight when I went down to the basement I noticed the furnace fan motor was making a bit of a racket. Not the inducer motor, the main forced air blower. Figuring a bad bearing was the culprit I started to tear it apart to inspect the bearing and maybe apply a bit of light oil to patch things together for a bit.

After getting the ends off of the motor, I learned that it had sleeve type bearings, not ball bearings. So, I cleaned the old, dirty grease off of the bearings and shaft, applied a light coat of new, clean grease, and put it all back together. Good bye noise.

My question is: Is this fixed, or is this a temporary fix and I should order a new motor and get it replaced ASAP? I didn’t get the part number from the motor when I had it out (Doh!), but I could make some calls to get the right part number. Furnace is a Carrier 58MCB080, it it matters.

View rubytorres's profile


5 posts in 2893 days

11-02-2015 11:32 AM

It is a temporary fix and I think you should check your furnace fan motor from the HVAC service tech . As, maintenance or repairing of furnace can also solve the problem , so may be you don’t need replacement of it.Check it once.

View dbray45's profile


157 posts in 3455 days

11-02-2015 01:00 PM

The squirrel cage (fan) should be cleaned as well, these fans have cupped blades that fill with dirt and reduce the air flow a lot. Once cleaned, this will tell you in a hurry if you need a new motor. Always good to have a spare.

It is a two fold thing, reduced air flow causes the motor to overheat, increasing the air flow creates more of a load. Moving the correct air flow makes the system run smoother and more efficiently.

-- Love woodworking and fixing most anything

View AC555's profile


2 posts in 2778 days

02-23-2016 03:18 AM

i am totally with rubytorres that it would be wise to contact your local aircon servicing company to have a look at the fan and motor.

View Rick21's profile


1 post in 2730 days

04-11-2016 01:57 PM

This could be a temporary solution for the fan motor, the same issue may appear again after some time. I feel that you should get your motor checked from your local aircon company. Recently I also have the same issue as you and i get my local aircon servicing company, ALV Aircon to check my air-conditioners for me. They advised me to replace a new fan motor as my motor have already worn out due to wear and tear.. My aircon have already been operating for 10 years… Hence i am not surprised as i am already mentally prepared to change my air-conditioners.

You must be signed in to reply.

DISCLAIMER: All views and comments posted by members are not necessarily those of HomeRefurbers.com or of those working on the site.

Latest Projects | Latest Blog Entries | Latest Forum Topics

LumberJocks.com :: woodworking showcase