Inspector-Gadget
New member
“The Mystery of the Migrating Wood-Screwâ€
Two days ago, my four year-old gas fired, forced air furnace began to make a rattling noise whenever the main blower ran.
“Oh, No! The last thing I need is for the furnace to fail during this extremely cold weather." thought I.
I screwed up my courage today and took the furnace apart. I removed the recirc blower and box from the bottom of the furnace and laid the box over on the cellar floor. I heard a familiar rattle from inside of the fan box assembly as I laid it over.
(Gadget rotated head back and forth and made ape-discovered-something sound.)
"MMMMmmmmmMMM??????"
Long story short: I found a 1 and 1/2-inch long wood screw lying inside of the fan box. Removed said wood screw, called it several names to make it feel bad and then put furnace together.
Voila!!!! No more rattle from the furnace. Easy fix – I got lucky.
Okay…so how is this possible? How does a wood screw migrate through long runs of horizontal ductwork, through the cold-air return filter, and then hop inside of the main blower assembly, there to happily rattle around whenever the blower ran?
Furthermore, why whould the screw want to go there?
Any and all theories entertained.
(This oughta be good!) :wink:
Mystified Gadget
Two days ago, my four year-old gas fired, forced air furnace began to make a rattling noise whenever the main blower ran.
“Oh, No! The last thing I need is for the furnace to fail during this extremely cold weather." thought I.
I screwed up my courage today and took the furnace apart. I removed the recirc blower and box from the bottom of the furnace and laid the box over on the cellar floor. I heard a familiar rattle from inside of the fan box assembly as I laid it over.
(Gadget rotated head back and forth and made ape-discovered-something sound.)
"MMMMmmmmmMMM??????"
Long story short: I found a 1 and 1/2-inch long wood screw lying inside of the fan box. Removed said wood screw, called it several names to make it feel bad and then put furnace together.
Voila!!!! No more rattle from the furnace. Easy fix – I got lucky.
Okay…so how is this possible? How does a wood screw migrate through long runs of horizontal ductwork, through the cold-air return filter, and then hop inside of the main blower assembly, there to happily rattle around whenever the blower ran?
Furthermore, why whould the screw want to go there?
Any and all theories entertained.
(This oughta be good!) :wink:
Mystified Gadget