Conquest 90 furnace issue

[roydoty]

My Conquest 90 furnace has just started chirping every 2-3 minutes. It is still producing heat and the fan runs properly. I see nothing wrong with the system and can't find anything about a chirp.

Any ideas??

[John Kogel]

More info, please.

Chirps only when running, or all the time?

Chirps only when the blower is running or before the blower starts up?

Chirp comes from what area of the furnace? Or is it coming from the ductwork?

Chirps like a bird or chirps like a tire on pavement?

[roydoty]

John,

I have only heard it while the blower is running. It is a bird like chirp and I can't tell what part of the furnace it is coming from. It is a short chirp so hard to catch real well.

[Marc]

I've known worn bushings in the blower motor to make an occasional, irregular short noise that I could feel but I've no idea if that would sound like a chirp.

Marc

[John Kogel]

Right, have the blower checked out. Bearings (or the belt, maybe).

[Jim Katen]

John,

I have only heard it while the blower is running. It is a bird like chirp and I can't tell what part of the furnace it is coming from. It is a short chirp so hard to catch real well.

It's the blower bearings. If you can reach them, put a drop of oil on them.

[roydoty]

Thank you all for the advice. I looked at the bearings and that was my culprit. No more squeaks!

[John Kogel]

Myc, Marc and John all get a pat on the head. []

Mike, Mark and John were the Rhythm Pals on the Tommy Hunter Show (Canadian C+W trivia).

[gtblum]

I've known worn bushings in the blower motor to make an occasional, irregular short noise that I could feel but I've no idea if that would sound like a chirp.

Marc

I got that, Marc.[]