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My furnace just started running loud and floor began vibrating close to unit. What does this mean?

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  • Heating & Co... Master
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More than likely the squirrel cage blower motor is defective or the blower cage bearings are in need of replacement.

Posted on Feb 07, 2012

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Therinnaiguy
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SOURCE: Coleman forced air furnace blower

Rmove the two screws holding the blower in place and slide it out. With the power off, rotate the wheel and inspect for debris or an impingement. If everything turns easy, you have a bad motor or start capacitor. If you have rubbing, adjust the wheel. If the motor will not turn, replace it.

Posted on May 30, 2008

  • 9 Answers

SOURCE: screehing noise when furnace is running

usuall a schreeching noise during blower opperation is bad berrings which would need to be replaced. Most unit warrentys for newer units cover five year parts and sometimes 10 for heat exchanger. But most do not cover labor. Or the blower may just be off balance and metals are rubbing. eaither way your proubly gonna need a tech. good luck

Posted on Mar 23, 2009

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Hi, it may be that you have a blockage some where in the unit or piping . Best to get the whole unit checked out.

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Try closing damper slightly between humidifier and furnace????

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Loud vibration


If it is a frost free check the fan inside. The fans can have bearing failure after a few years thus causing the vibration. Also the compressor underneath is mounted on rubber vibration dampers and if one of these rubber mounts fail then the compressor will start vibrating against the refrigerator frame causing a loud vibration. If none of these apply gently press on the side and front panel of the refrigerator to try and locate the source of the vibration as any where metal is vibrating against metal the side and front panel act as a sounding board amplifying the sound. If you cant locate the vibration then you may have a more serious problem and may need to call a technician.

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1 Answer

Screehing noise when furnace is running


usuall a schreeching noise during blower opperation is bad berrings which would need to be replaced. Most unit warrentys for newer units cover five year parts and sometimes 10 for heat exchanger. But most do not cover labor. Or the blower may just be off balance and metals are rubbing. eaither way your proubly gonna need a tech. good luck

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Gas furnace short cycling. checked by experts no solution


This is tough one. If you have an older mercury type thermostat, behind the cover theirs a small copper pointer that points to some numbers. This is your heat anticapator. This setting has to match your milliamp draw of all the controls on your furnace. If set to low it over heats and fools the thermostat into thinking its satisfied. Move the point to a higher setting in little increments. Hope this works for you. Can't help with the vibration without hearing it.

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We recently had the same problem. After cleaning both the furnace filter and the humidifier water panel, the clicking noise (electric air filter) and the loud bang went away.

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1 Answer

FURNACE RUNNING LOUD


sounds like either the motor is off balance
or is going bad again
either way id be on the phone to the guy who did the rapair
more than likely the set screw on the sqiral cage came loose and now its vibrating

Nov 11, 2008 | Aprilaire 700 Humidifier

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Loud noise


Replace the water valve... It"s vibrating when closing. Do you have hot water feeding the unit?

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1 Answer

Loud Buzz upon starting


sounds like just a vibration caused by cols hitting the frame perhaps, sometimes a pull from underneath the unit on the condenser coils will rectify the problem(id give a pretty quick tug, . unit could just be settling into the floor or the house settling around it, vibrations are definitely annoying but usually no need for alarm

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