Very simple. Most of the time wobbling inside the furnace is caused by the blower wheel being out of balance. This means your blower wheel is out of balance, and if not corrected right away, it will cause other problems to your entire HVAC system. Might be something got sucked into the blower wheel, putting it out of balance. This feature is not available right now. Same thing is felt with cooling/heating off, just fan on. You may have something sucked up into the wheel causing it to be out of balance. Can the cages go bad®, founded in 1995, is the leading independent Concerned delivery connection will be approx. Or do i have to install elbow for a riser? I pull the shaft out and observe the clearance on the spin and then push the shaft in and do likewise. Odd sounds like scraping metal could mean your blower wheel is broken. home improvement and repair website. There was some plaster on some of the fins and upon removing it, the vibration worsen. We welcome your comments and Gas and Oil Home Heating Furnaces - Blower Wheel Out of Balance - RUUD Silhouette II - I was getting a low rumbling sound / vibration out my furnace and replaced the blower motor. Noticed a louder humming and shaking in the home when we started to use the AC this past week. How to balance squirrel cage - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. You may freely link Answer: Most of the time wobbling inside the furnace is caused by the blower wheel being out of balance. I also replaced the blower motor at the same time. This is usually a blower wheel out of balance. This morning the blower wheel in my York furnace came loose, creating a lot of vibration and loud noise that could be heard throughout the house. Furnace Blower Wheel is out of balance This will make your furnace sound like your washing machine when it is out of balance. suggestions. Lowering the speed, if it works, is a temporary solution to a permanent problem. Shut your furnace off if you have a compromised mount. Blower motors work in one of two ways: as single-speed or variable speed blower motors. I suspect it's the blower wheel or a bearing in the motor going out. I did have to change the capacitor on the compressor outside last year and no issues until now. I have been doing some research and seems that there is a hub on the back of the blower wheel in which i could use a puller. That might do it you could have missed on or two. Sometimes the motor itself can become out of balance as well. Note vent will be approx. The noise is similar to how a washing machine screeches when its agitator is out of balance. If your blower wheel is out of balance it maybe from the dust collected in the cups of the blower wheel, some times you can just clean them to balance it out. Any dirt on those blades will cause your blower motor to work harder. If it is a direct drive make sure the fan is tight on the motor shaft, belt drive check the belt for Ventilation A variable speed blower motor, however, moves at different speeds to better control the flow of air throughout your home. New inducer blower wheel wobbles when rotates. very possible it is a blower wheel that is off balance, or furnace is oversized for the ductwork. Sometimes the blower fan is integral to a housing that has to be replaced as a unit - for typically about $150-300 for that unit, plus labor. Your initial assumption about load on blower due to new filter is valid. Eventually, the wheel breaks down completely. Thumping: Thumping and vibrating sounds are the results of an unbalanced blower wheel. All information is provided "AS IS." If I replace the motor AND the blower wheel, I shouldn't have to worry about something being out of balance, right? There are very few moving parts in any air handler. Other times the blower fan or wheel can be removed and replaced, commonly around $50 I am trying to replace my blower motor, but cannot get the motor shaft out of the blower wheel. It was a perfect fit. If you open it up and look at it you might see a piece of insulation or something stuck in … Installing an above ground 330 tank in a garage. I removed the blower … I have even added electric baseboard heat to the first level, but the upstairs is still 5+ degrees warmer then downstairs. Furnace manufacturers say that these va… I recently sealed all my metal return ducts with mastic along with the return plenum. The return is on the first level. I don't understand why it is now acting as though it is out of balance. Side question: The insulation in the attic has a layer for fluffy dirt looking crap. Can the fill line run horizontally (1/4" per foot pitch) outside and just capped ? While this doesn’t start out as a serious problem, it does need to be fixed quickly so that it doesn’t get worse. Easy fix, pull out the blower, disconnect the motor and clean the squirrel cage with hot water in a utility sink or garden hose outside level 2 Easy to open up and change the blower motor as a unit? Single-speed motors turn on when the thermostat indicates the interior temperature has dropped and turn off when that temperature has been reached. Please try again later. Also, if the motor is mounted to the squirrel cage with a band mount, make sure all the mount legs are mounted semetrical. (More unlikely would be that the entire mount of the blower assembly is coming detached....but worth a check. Motor mounts to fan housing with three screw through rubber dampeners. Because they operate at only one speed, these motors are using the maximum amount of energy when turned on. Sometimes if enough dirt gets in the squirrel cage it will cause the wheel to vibrate when running. Most of the time a piece of something (filter, furnace insulation, paper, dirt) has become sucked in the blower wheel (squirrel cage) and causes it to become off balance and wobble. You either have a broken motor bracket or a bad blower wheel. Called starving the suction of the blower. The Upstairs is very warm and downstairs cold. Id pull the blower out and go over the blades on the squirrel cage again . Furnace unit vibrating, blower wheel/motor out of balance or going out. Many times, in an older furnace motor, you will experience problems with noise. If the wheel is too close it could scrap the housing when energized. Any Suggestions. to this site, and use it for non-commercial use subject to our terms of use. Cleaning the blower wheel on a furnace / air conditioner takes a little work, but is supposed to improve your air quality. If the MERV rating of the filter is too high, this will starve the blower suction and cause any minor vibration in the blower motor/wheel assembly to amplify. (4) Remove the electric box (1 screw). So, I'm assuming the blower wheel is out of balance. A broken motor mount causes the blower wheel to drop and rattle against the housing. The motor itself can also become out of balance. Video attached. daikinac. Watch it spin and make sure it's not bouncing in there. I was getting a low rumbling sound / vibration out my furnace and replaced the blower motor. – bigbull15 Jul 28 '16 at 5:03 But cleaning the fins one-by-one was what made the vibration worse. It has gotten quieter but it still vibrates a lot. Banging or rattling could mean you have dirty burners or the blower wheel is out of balance. 1995-2018 MH Sub I, LLC dba Internet Brands. I'm just worried it is rodent activity or nesting. I bought this to replace a B168047 blower wheel in a Goodman GMS80905CNA Air Handler/Furnace. For some reason or another the blower is now vibrating and shaking more than usual now then before the duct sealing. All rights reserved. 2' above above this fill. They do make a kits (weights) to help balance the wheel but your better of to just replace it. 5' above grade, dont want to make it to high or impossible to hook up to, without a ladder. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Is this just from normal dirt build up? This puts it out of balance, causing obnoxious banging noises. Squirrel cage fan mounts to motor shaft via set screw. In … A new blower wheel over the Internet for residential units may run between $35 and $75. This is typically due to an out of balance inducer blade that needs to be rebalanced. I have a Bi-Level Apartment (2 Levels). It’s easy to avoid this problem by regularly changing your furnace filter. Have you tried cleaning the fins of the squirrel cage, one by one? Most of the time a piece of something (filter, furnace insulation, dirt) is sucked into the blower wheel (squirrel cage) and causes it to problems contact If the blower wheel is out of balance it's very difficult to see it by only spinning by hand. View our Privacy Policy here. submitted to our " Community Forums". Call a professional if you’re hearing any odd noises coming from your furnace. Most motors for furnaces have end play in the shaft. It is a Gas Forced Air System with the unit on the top level. An accumulation of dirt in the blade cups, will affect balance. A blower wheel that is out of balance, but not broken, can also cause the furnace to produce a screeching noise. Another problem that arises from this dust accumulation is your heat exchanger running hotter. Thanks for the suggestion and it sounds like ingenuity hard at work. The sound isn't usually too bad but shouldn't be ignored because it … Questions of a Do It Yourself nature should be The wheel needs to be centered on that play. 14 years old at this point, but still blowing very cold air. Now if the blower wheel is out of balance take it back since trying to balance the wheen with the shim clips is done by a special machine and I have never been able to rebalance on in the field accurately. Eventually, the wheel breaks down completely. Sounds like your blower wheel got out of balance or the motor bearings are going. I guess it was helping to keep the wheel balanced? When as little as one tenth of an inch of dust accumulates on your blower wheel, it can reduce your furnace’s efficiency by 20%. It … Double check your capacitor, now would be a good time to replace that as well if needed.
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