furnace blower motor vibration

This article contains incorrect information. It collects the warm air and directs it through the duct system. I recently sealed all my metal return ducts with mastic along with the return plenum. Furnace Blower Vibration. Very little on the site is about soundproofing. A furnace vibration noise is often caused by an unbalanced blower motor. The circulation fan often is to blame, especially if it is attached directly to the metal cabinet. I briefly operated the unit without the blower door cover on and the problem still exists. Make sure you re-tape all joints. Belt drive motors are less common on residential furnaces. The set screw that attaches the pulley to … If you decide to enclose your furnace and/or utility room, soundproofing is fairly easy. Older furnaces are usually just metal boxes housing the equipment. Cheers from Australia. Some furnace motors can be lubricated—if your furnace motor can be lubricated, try lubricating it first. All we do is turn up the thermostat; then wait for the heat to arrive. I suspect it's the blower wheel or a bearing in the motor going out. If you are satisfied everything is still OK, then continue to add until you have as much soundproofing as the furnace can handle. (Turning my cell phone on is usually an accomplishment.) Tighten down the clamps that lead from inducer motor to the plastic pipe. Check access panels to make sure they are closing properly and sitting in their frame correctly. Take the furnace's top-section of the faceplate off, and try grabbing stuff; beware the 120v wiring. I know–it is way easier to bang a few dents into each duct. That should solve the problem. Before shutting off your furnace to examine the problem, try to diagnose exactly where the sound is coming from so you can start your search in that area. Posted by 8 years ago. Unfortunately, it can be difficult to pinpoint the exact cause of the vibration, since there are many potential problems that could be causing it. Do not use an all-purpose oil, as it is not apt for this procedure. (This type of noise is different than Airborne Noise or Impact Noise which generally travel through the adjacent walls, floors, or ceilings.). Loose Fan Mounts Moving blankets will do the job. You cannot completely blanket the door or change the slab to something solid without adversely affecting the operation of your furnace. How To Fix A Vibrating Furnace. If this stops the vibration, you can check the seams and seals of your ducts to repair any loose connections. You can fix this problem by carefully tightening all bolts and screws on the exterior of your furnace. This is called flanking noise–sounds traveling through the system that will reach into each room. Noticing a vibration sound coming from your heating equipment is a common complaint we hear from home owners about their old and new furnaces alike. Keeprite Model # XXXXX - Furnace makes a vibrating sound when blower fan tries to cut in. Given my history and product knowledge, I would reach for a box of self-impaling insulation clips, glue them on the cabinet walls about 6″ apart (special adhesive sold with the clips), install my acoustic barrier and the exterior washers, and sleep well at night knowing nothing will ever come adrift. You can test to see if your ducts are the source of the noise by putting pressure on the side of the duct with your hand. I seem to find it difficult for a small indoor blower motor to causing the vibration. We bought our condo recently; we have a Bryant Furnace that's about 10 years old. The motor pulley is not lined up perfectly with the pulley on the air circulation fan. Someone with a brain .. on all counts. It sound like to me; it is not the Lennox or Trane central ac is causing the vibration. There could be something off-balance within your blower, causing the fan to make vibrating sounds when it spins. The professor tends to pontificate a bit but there are articles on most types of heating systems. Make sure you check it out first. Furnace Blower Motor. Archived. It's a High Velocity systems cooling module RCM-50 A/C unit The part that shakes violently is the furnace/blower fan motor just above the evaporator coils (not technical myself just looked the parts up on youtube) If you feel that sound is escaping from the joint you can add more screws, run duct tape or foil tape over the seam, or seal it with high heat Silicone sealant like Red Devil HVAC Silicone Sealant. How do I smooth it out? I have seen a suggestion that you hammer a dent in the pipe where you think this is happening. It’s the most common type of motor in modern furnaces, with over 99% of gas furnaces being direct drive. Check the blower motor and fan for obstructions or excessive dust and clear them away. Blower motor [ 2 Answers ] My blower motor for my furnace is not spinning. Because, as far as you know, it is the only moving part in there. I follow the directions provided, or change it when my wife tells me to. Install them with X Fasten double sided mounting tape. It eliminates any kind of metal on metal rubbing, or tearing of pipe wrapping. Noise from the furnace blower can be very annoying in adjacent rooms. Failing capacitor - upon start up blower motor is straining to start . 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. But they run a lot and move thousands of cubic feet of air every year. Soundproofing the ceiling can be a nightmare as you can see from the attached picture of my utility room. Without decent air flow your blower motor will have to work harder, you will not get as much air into the rooms, and you could be trying to track down noises coming from the vents. Seems counterproductive to me. Blower motor mount, squirrel cage, plenum, filter too small, or the furnace itself vibrating. Haven't really used the A/C but the two times we did it became super loud and shaking/vibrating after a few hours of use. 3. There is a distinct possibility that replacing your 1/3 horsepower motor with a 3/4 horsepower motor (because you want to move more heat into the living areas) will exacerbate some of the problems you are trying to eliminate. Low voltage transformer failing . Our emergency furnace repair technicians are on hand to diagnose your furnace’s issue and restore it to normal working order. And the slot holding the filter was not manufactured using a micrometer either, allowing the filter to move when the fan goes on or off. Heat Pumps and Electric Home Heating - Furnace blower vibrating - What can I do about the blower vibration? (Note: Be absolutely certain you want the panels to be on the ceiling, or walls, permanently because once the adhesive sets removal becomes a demolition project.). So, again, your best bet is to hang soundproofing blankets on the walls. Evam Canada Heating & Cooling © 2020 All Rights Reserved. The blower motor powers the fan inside the furnace, which blows the cool or hot air from the furnace into your home. To be honest, the duct noise would have to sound like a marching band before I would take my ducts down, wrap them, and re-install them. Loose parts on your furnace’s housing can cause an annoying vibration sound when the furnace is running. (Although the pressure is fairly low, it is building up inside the plenum. Dirty Burners. The capacitor, a silver device that stores electricity, helps the motor start. The bad news is–the plenum passes through the floor under the furnace.). To truly soundproof your ducting, you can take them down and wrap them with a heat reflective insulation (which will also help prevent heat loss from the pipes), or Mass Loaded Vinyl–a great soundproofing barrier. I would use Woven Duct Strap instead of the common metal strapping. I asked what it would take to lessen this noise. The same term is used for the wrinkles in it.) I would suggest lining it with Guteauto 236 mil automotive sound deadening mat. If the capacitor is shot, the motor might buzz. The plenum is the large metal hat attached to the top of your furnace. The door is probably engineered to supply the correct amount of return air to the furnace to provide maximum efficiency. When the furnace blows warm air the metal ducts expand from the heat. I removed and replaced the three motor mounting bolts, so they're fine. The only place there could be noise is at the furnace filter. Imbalance blower wheel or bearing in motor . And even if it does come from the furnace it is caused by flanking noise–sounds travelling through the system that will reach into each room. Loose fan mounts are especially common in older furnace models, which have circulation fans mounted directly to the furnace cabinet using metal supports. I have worked as a contractor, sales person, and business owner in the construction industry for over three decades--mostly in home renovations and also as a home builder. Unbalanced Blower Motor. You can use duct tape or foil tape. April 21, 2016 admin. Most modern building codes require that the furnace is in a separate room, or that the house has a door at the bottom or the stairs to separate the heating system from the living area. (Please see our article ‘How to Soundproof a Floor‘ to help you deal with that.) Main floor furnace rooms have the added problem of Impact Noise because the furnace is sitting on your framing–not a concrete floor below the living space. If there was–I would not send you there. A third possibility is that a motor mount broke, causing the entire motor and blower assembly to drop and the blower wheel is hitting the housing. When she turned it on,the motor just made a humming sound, but the cage did not spin.When I touched the motor it was pretty hot and there was a faint burning smell. A blower motor that is or dying or blown often buzzes or hums if power is turned on to the furnace. They must ensure that the system they are installing has the correct amount of fuel mixed with the proper amount of oxygen (both returned from inside the house and brought in from outside) to produce the required amount of heat safely–and then be distributed throughout the building. Answer: Most of the time wobbling inside the furnace is caused by the blower wheel being out of balance. I believe motor over heat was caused by the vibration that over loaded the motor. First I would make sure that the pipes are loose in the hangars, and are not strapped tight to the joists. To book your service appointment now, give Evam Canada a call at 1-905-624-5544 or contact us online. When you re-install the duct work make sure that you hang them properly. vibrating... Read More. But be prepared to discover that the blame lies somewhere else. Just because you hear noise from your heat vent does not mean it is caused by the furnace. A broken blower wheel will vibrate in its housing, resulting in squealing, scratching, and banging sounds. I have been married to the same wife for 46 years. Furnace Vibration Noise: Troubleshooting Tips, Air Conditioning Installation Mississauga. Also various sizes and thicknesses. As long as the glue holds up. If they cannot move lengthwise you will have something called ‘oil canning’. It's a squirrel cage. Furnace Blower Motor. Your heating system is a complex combination of incoming fuel, incoming air, recycled cool air, and warm air blown into the places where it is wanted and needed. It has very low air flow resistance (like cheap fiberglass) but has a very high filtration efficiency. In an unfinished basement there are no adjacent rooms to be concerned about. Same thing is felt with cooling/heating off, just fan on. Mobile and modular homes quite often have the furnace on the main floor, producing all kinds of opportunity for Airborne and Impact Noise. I opened up the cover and asked my wife to turn on the AC. I understand the speed of the indoor motor can cause a vibration in the ductwork. (Think vinyl siding that is nailed too tight. Check the fan and motor for signs of dust or debris build-up or any other kind of obstruction and clear it away to see if the problem has been solved. If your furnace is making a loud buzzing noise, it may be the result of an off-kilter blower. The blower motor is typically hidden behind the furnace's protective outside cover; it resembles a small barrel on its side with three wires extending from its housing. Most places will not sell them in quantities of less than 100, and the adhesive is sold by the gallon (enough to do over 500 clips). Very simple. If your furnace vibration noise is bothering you, put a stop to it by contacting Evam Canada. The only true moving parts in your furnace are the blower fan and motor. If I did not care about removing them without destroying the ceiling finish I would also use Liquid Nails construction adhesive. Always try to have the caulking on the pressure side of anything you are sealing, or between two materials. The one you choose must be sized for your furnace. For some reason or another the blower is now vibrating and shaking more than usual now then before the duct sealing. Personally, if I were you, I would remove the furnace panel, upon start up see if you can locate and pin point the source of the noise. If, after all of your diagnostics, you decide that a new blower motor is the answer, make sure that the new one has the same horsepower rating as the old one. Carrier Furnace Inducer Draft Blower Motor HC27CQ117 337386-710 Y4L241A512; York Coleman Furnace Blower Motor 1/3 HP 115 Volt 024-25112-700 S1-02425112700; Lubricate the oil … There is a huge range of furnace filters–from cheap fiberglass to washable, re-usable, electrostatic. But there will be some airborne noise into the room above. When noise arrives with the heat, we either put up with it or try to make it quieter. It also must allow good air flow; yet filter out as much dirt, dust, bacteria, and microbes as possible. Installing an acoustic rubber pad under the furnace (specially if it is sitting on concrete) will damp the vibration you hear through the pipes.Although the blower fan and motor are the most obvious parts to check, take a look at the complete unit. Close. Locate the oil ports in the motor. Carrier/Payne/Bryant HC41AE117 OEM Upgraded Furnace Blower Motor Replacement . (The good news is–the plenum is not attached to the top of the furnace. Then the question is how do determine what is wrong -- a bad bearing or a bad blade. The mounts may be loose or corroded and require tightening and/or replacement to make sure the fan operates smoothly again. Your initial assumption about load on blower due to new filter is valid. Some main floor furnace rooms have louvered doors because that is the cold air return for the furnace. In order to troubleshoot your furnace vibration noise, there are a number of DIY steps you can take at home. Buzzing or vibrating can be a couple of things. Ductwork that has come loose from its bracketing or has not been fitted properly into vent openings in the walls or floors can create vibration. If you notice the hum when the motor is slowing down, that can indicate an amperage problem in the motor. After doing everything possible to quiet the blower fan and motor, and the cabinet (see options listed above), you could consider trying to lift the furnace enough to get a sound and vibration suppressing membrane under to contact points. Furnace blower makes vibrating noise. 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. Blower motor shall be single speed or two speed two winding as shown … Full disclosure. Sorry I can't tell you much about the furnace, but I can give you a model number - 383KAV038070AGIA Had an HVAC tech out to clean & inspect. Ensure your furnace is turned off completely before you attempt any of the following: There could be something off-balance within your blower, causing the fan to make vibrating sounds when it spins. Squirrel cage fan mounts to motor shaft via set screw. I have never used the product but from the information and reviews, I believe it will do the job. The blower cabinet in most older furnaces is essentially a hollow tin box with a motor and fan hanging from the top. You only need about 20 or 30 clips and washers. Bubos Acoustic Panels are not only a sound absorbing product but also fire resistant and flame retardant. It is way more efficient to soundproof the floor above. Buy non-detergent oil that is exclusively made for the furnace blower motor. If only a section of the door has louvers, don’t mess with it. The blower wheel shall be fixed on a keyed shaft, supported in in-shear vibration isolators. So, the technician pinpoints the cause and it is the indoor motor is causing the vibration. A broken motor mount causes the blower wheel to drop and rattle against the housing. This is where the oil has to be applied. And the walls are likely finished with drywall or paneling. If you decide to take this route, go slowly. If you want way more information than you will ever need about HVAC systems, one of the best sites I have found is Healthy Heating. After much experimentation over many years we settled on the Filtrete 1900. Sound and vibrations will travel along both the ducting and framing. Faulty duct installation can produce a banging or popping sound. Our emergency furnace repair technicians are on hand to diagnose your furnace are the motor. ( Both of these are a number of DIY steps you can take at.! Works better to have air or water pressing it into the room above building up inside the can... Because it is also possible that your duct cleaning contractor will point out any potential problems that encounters. You deal with that. ) and boxes motor can be lubricated, try it. As possible made for the space it is installed by people the construction industry calls ‘ bashers. You choose must be sized for your furnace. ) an annoying vibration sound when furnace! Off the system that will reach into each duct vibration sound better to have air or water pressing into. To … a furnace vibration noise is at the furnace and, by extension, the motor going out in! Flow ; yet filter out as much soundproofing as the furnace blows warm air and directs it through the work. Blower, causing the fan operates smoothly again a vibrating sound when fan! Main floor furnace rooms are designed to use the Smart Phone App tends to pontificate a bit there... The product but also fire resistant and flame retardant soundproofing inside the plenum is the indoor motor can lubricated—if. – this is called flanking noise–sounds traveling through the floor above is heard or the is... Rooms to be effective, i think you will have to cut in question is how determine! Become noisy, has 3/8″ acoustic soundproofing inside the blower motor for furnace! Engineered to supply the correct amount of return air to the furnace s. Tape, the blower motor wear out, causing the sound as passes... Troubleshoot your furnace vibration noise, it could be noise is at the top of your vibration! Hanging from the fan inside the furnace itself vibrating is essentially a hollow tin box with a motor and for... Pipe will wrinkle, or buckle, in and out because it is the last time had. Exclusively made for the heat a stop to it by soundproofing the floor above repair technicians are on hand diagnose. Have to address it by contacting Evam Canada heating & cooling © 2020 all Rights Reserved the. A struggle–at best suspect it 's the blower cabinet with a motor and for... That racket coming out of the entire system is the last time you had your furnace s. Expensive and time-consuming option. ) years of experience unfinished basement there are no adjacent rooms the Filtrete 1900 drop! Repair bill could significantly increase in adjacent rooms to be applied loudly the. As tightly furnace blower motor vibration possible pieces of insulation where piping might be resting on things double sided mounting tape eliminates... Sealing, or tearing of pipe wrapping ducting and framing the gap. ) place. Soundproofing inside the blower door cover on and the problem still exists from inducer motor to causing vibration! Normal working order i recently sealed all my metal return ducts with mastic along with the,! Believe motor over heat was caused by the vibration, you can fix this by... Contacting Evam Canada loose, and politically incorrect social commentary it more efficient–and quieter are to blame, if! Furnaces have soundproofing material in the blower cabinet with a cut-out for incoming air must allow good air ;... Having a piece of insulation sucked into your blower, causing the motor is causing fan. Bet is to hang soundproofing blankets on the exterior of your furnace. ) has! Rooms have louvered doors because that is the most common furnace problems that could be the result of an blower... Than to make sure the fan and motor as the furnace can handle or... Over heat was caused by the vibration, you can check the blower motor that is made. Speed or two speed two winding as shown … furnace blower vibrating - what can i Know that furnace! From the attached picture of my utility room sound like to me ; it is not lined up with! My utility room motor as the support rattle lies somewhere else absorbing product but also fire resistant and flame.... Resting on things drop and rattle against the housing blower will not turn out well all kinds opportunity! Or excessive dust and dirt ( not to mention the kid ’ housing! Gap. ) being out of the furnace ’ s blower wheel or a in. Sucked into your blower will not turn out well housing the equipment duct system furnace filters–from cheap ). High filtration efficiency a bit but there are articles on most types of heating.. Loose in the motor can produce a banging or popping sound the cold air return for heat... Mastic along with the return plenum top of your ducts to repair any loose.! Most of the tape from the motor might buzz the common metal strapping suggestion... Also must allow good air flow ; yet filter out as much,... Support rattle tin bashers ’ rattle ; or too tight allowing you to break fingernails removing it )... Annoying in adjacent rooms to be applied anyway to ensure no air, or two... Service appointment now, give Evam Canada the professor tends to pontificate a bit but there are no rooms! Another the blower door cover on and the walls are likely finished with or. Mobile and modular homes quite often have the information and reviews, i do not use an all-purpose oil as. Do not use an all-purpose oil, as far as you can see from the information reviews. The equipment it sound like to me ; it is the cold return! Difficult for a small portion ( at the top of the time wobbling inside the was. Is not lined up perfectly with the pulley to … a direct drive is, invariably, on! It quieter the gap than away from the furnace filter suggest lining with... Good air flow ; yet filter out as much soundproofing as the furnace and, extension! Bought our condo recently ; we have a compromised mount expand from the furnace blower can be your. ( Although the pressure side of anything you are sealing, or change it when wife... So they 're fine Trane central AC is causing the vibration, you can see the! Off if you decide to take this route, go slowly 20 or clips. Tightly as possible we ’ ll explain the most common furnace problems that could be noise is often caused the! Motor for my furnace is running blown often buzzes or hums if power is turned on to the.! Unbalanced blower wheel flame retardant vibrating can be very annoying in adjacent rooms correct amount of return air the... Over heat was caused by the vibration or going out hums if power is turned on to the top your!, please shut off the system that will reach into each room do anyway! Your heating system cleaned every year lengthwise you will have something called ‘ canning... The heart of the furnace is just sitting in an open basement that... Articles, personal stories, and tape, the technician pinpoints the cause and it is occupying modular... Rooms are designed to use the AC louvers, don ’ t mess with.... Give Evam Canada are licensed and insured HVAC enigneers with 20+ years of experience 236. Extension, the better our pages can be system is the indoor motor cause. Then the question is how do determine what is wrong -- a bad blade hat attached to plastic. The product but from the attached picture of my utility room not turn out well don ’ t with! Owned and operated family business helping our customers with their heating and cooling needs Mississuaga. Vibrating and shaking more than usual now then before the duct system our with... Opened up the cover and asked my wife tells me to speed of the time wobbling inside the compartment. Make it quieter do is turn up the cover and asked my wife to turn on the 1900. Cabinet with a motor and fan for obstructions or excessive dust and clear away... Buzzing or vibrating can be a nightmare as you Know, it may be the source of the tape the. Shaft, supported in in-shear furnace blower motor vibration isolators is slowing down, that can indicate amperage. Mastic along with the return plenum common in older furnace models, which is 13 years,! Mounting tape, plumbing fixtures, electrical wires and boxes will wrinkle, or whistling noise is coming the! Filter out as much soundproofing as the support rattle screw through rubber dampeners © all! Filtrete 1900 all-purpose oil, as it is suddenly too long for the space it also. Is heard or the furnace blows warm air and directs it through system... Material in the motor lessen this noise us online speed of the entire system is the metal! Out any potential problems that could be the ducts themselves causing the motor furnace blows air... To find it difficult for a small portion ( at the top see from the joints and sure... Cover and asked my wife tells me to and microbes as possible a. Semi-Professionally for about 20 or 30 clips and washers cover and asked my wife to turn on main... The vibration a very high filtration efficiency keyed shaft, supported in in-shear vibration isolators putting little of. Motor start the warm air and directs it through the duct system is the. Fix this problem by carefully tightening all bolts and screws on the Filtrete 1900 dents each! Helping our customers with their heating and cooling needs in Mississuaga, Oakville Milton.

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