Gas Furnace Vibration

[samuels]

Over the last two winters my furnace has developed a vibration when the temps are cold ouside.After awhile it goes away when it warms up.I don't fnow if it goes away because the temp outside is warmer or the flue or fire box has warmed up.It acts like the furnace (flue)is drawing to hard.The vibration is coming from somewhere in the box.I would appreciate it if anybody could give me ideas.The furnace works fine and I have it cleaned and serviced every year.

[Jim C]

I'm not a furnace guy, however if I had a hot air system that had a vibration problem the first place I would look is at the fan blades, second, both front and rear fan bearings

[samuels]

Thanks for the idea Jim C.I will surely check the fan blades and anything else in that area.It sounds like the vibration is higher up in the fire box where no moving parts are.I haven't had no luck with something that should be so simple.

[BUDC]

In addition;
A bad belt will cause vibs. Does yours have a belt driven fan??
Also, dampers can vib in the airflow. They're usually a good ways downstream from the furnace though.
Good Luck,
budc

[Jim C]

Google (fan vibration) you will get lots of ideas, Google search engine supplies a wealth of good info.

[BUDC]

Google (fan vibration) you will get lots of ideas, Google search engine supplies a wealth of good info.

ABSOLUTELY!!

It can be a little tricky to get the Search Words just right, just don't hesitate to try a little diffent phrase.
GOOGLE is a great and seemingly endless resource.
budc

[BUDC]

Google (fan vibration) you will get lots of ideas, Google search engine supplies a wealth of good info.

ABSOLUTELY!!

It can be a little tricky to get the Search Words just right, just don't hesitate to try a little diffent phrase.
GOOGLE is a great and seemingly endless resource.
budc

[samuels]

Hey men thanks for your suggestions.I've been real busy all week and haven't had much chance to check it.I work part time in a boat shop and they are really rolling right now.I will check it out saturday for sure.Thanks

[crabby and son]

The furnace is shaking because it's cold When it warms up.. it stops shaking.......I do the same thing...........Gary

[samuels]

No belt.Checked everything I could to see if it was loose.I couldn't find anything.It won't run much now so I'll wait till fall.Thanks for trying to help me out.