If the motor has oil ports you can put in a few drops of oil. If the motor has sealed bearings you will need to replace it.
To fix a squeaky furnace, you need to add oil to the motor bearings. In some cases it could also be due to the fan, which would then need to be replaced.
Call the furnace guy and have him fix it.
tape it
You should contact an air conditioner repear company to fix the furnace for you.
spray hinges with wd40
oil it or shoot a squealer
spray with cooking oil
Assuming the belt and pulleys are in good shape, put a dab of clear silicone grease on both sides of the belt. Do this with the engine off. Squeak is gone.
yes it can fan
WD40
WD-40
No it is not advisable. Put it on AUTO. The furnace will decide when it is practical to turn the fan on. Really. No it is not advisable. Put it on AUTO. The furnace will decide when it is practical to turn the fan on. Really.
I just fixed this on my car. All you need to do is spray some DW-40 on the area that is squeaky, and squeak no more