furnace blower motor vibration


My furnace, which is 13 years old, has 3/8″ acoustic soundproofing inside the blower cabinet with a cut-out for incoming air. Furnace Blower Vibration. Screwing through the metal cabinet kind of defeats the soundproofing program, and you might make things way worse by drilling into something important–like your fuel line. I have seen a suggestion that you hammer a dent in the pipe where you think this is happening. I would use Woven Duct Strap instead of the common metal strapping. And the walls are likely finished with drywall or paneling. Posted by 8 years ago. 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. Buy non-detergent oil that is exclusively made for the furnace blower motor. (Although the pressure is fairly low, it is building up inside the plenum. Here, we’ll explain the most common furnace problems that could be the source of the annoying vibration sound. 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. The pipe will wrinkle, or buckle, in and out because it is suddenly too long for the space it is occupying. Furnace blower vibration. Same thing is felt with cooling/heating off, just fan on. Your initial assumption about load on blower due to new filter is valid. Mobile and modular homes quite often have the furnace on the main floor, producing all kinds of opportunity for Airborne and Impact Noise. In my case the imbalance was due to a failing motor … Heat Pumps and Electric Home Heating - Furnace blower vibrating - What can I do about the blower vibration? The more feedback you give us, the better our pages can be. Seems counterproductive to me. As long as the glue holds up. There could be something off-balance within your blower, causing the fan to make vibrating sounds when it spins. The set screw that attaches the pulley to … In order to troubleshoot your furnace vibration noise, there are a number of DIY steps you can take at home. 3. Final Note: Make sure you have your heating system cleaned every year. Should your furnace be vibrating near duct work, it could be the ducts themselves causing the sound as air passes through them. Motor mounts to fan housing with three screw through rubber dampeners. It has very low air flow resistance (like cheap fiberglass) but has a very high filtration efficiency. The HC41AE117 Furnace Blower Motor Replacement is a brand new OEM Upgraded 1/3HP, 115V (208/230v also available), 1075RPM, CW Rotation, 4 Speed motor that is compatible with Carrier, Bryant and Payne furnaces, as well as GE and genteq part number 5KCP39GGS336S. So, again, your best bet is to hang soundproofing blankets on the walls. Noticed a louder humming and shaking in the home when we started to use the AC this past week. (The good news is–the plenum is not attached to the top of the furnace. The access panel is quite often too loose allowing it to rattle; or too tight allowing you to break fingernails removing it. Eliminating built-up dust and dirt (not to mention the kid’s Lego pieces) only makes it more efficient–and quieter. 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) But they run a lot and move thousands of cubic feet of air every year. Some main floor furnace rooms have louvered doors because that is the cold air return for the furnace. 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. It’s the most common type of motor in modern furnaces, with over 99% of gas furnaces being direct drive. (Both of these are a fairly expensive and time-consuming option.) NOTE: Before checking into any of these potential problems or doing any repairs–TURN OFF THE FURNACE BREAKER , TURN THE THERMOSTAT COMPLETELY DOWN, TURN THE GAS OFF– and threaten everyone in the house with physical harm if they change any of your settings while you are working on the furnace. 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. Note: Although it has been used for decades to seal duct joints, some people in the industry are beginning to question the efficiency of duct tape. I know–it is way easier to bang a few dents into each duct. Then I would remove all of the tape from the joints and make sure they are joined as tightly as possible. The Best and Quietest Air Compressors of 2020, The Best Quietest Electric Kettle of 2020. Furnace blower makes vibrating noise. 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. Thumping: Thumping and vibrating sounds are the results of an unbalanced blower wheel. The furnace blows the air into the ducts, the duct tubing vibrates in response and the loose fittings amplify the effect, reproducing the shaking throughout the house. The bad news is–the plenum passes through the floor under the furnace.). More power and speed can overpower the system because it is not designed for a larger sized motor, and you will get more banging, or humming. It sound like to me; it is not the Lennox or Trane central ac is causing the vibration. Unfortunately, it can be difficult to pinpoint the exact cause of the vibration, since there are many potential problems that could be causing it. The only true moving parts in your furnace are the blower fan and motor. But be prepared to discover that the blame lies somewhere else. Blower motor mount, squirrel cage, plenum, filter too small, or the furnace itself vibrating. 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. 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. The only place there could be noise is at the furnace filter. Furnace Vibration Noise: Troubleshooting Tips, Air Conditioning Installation Mississauga. A broken blower wheel will vibrate in its housing, resulting in squealing, scratching, and banging sounds. Make sure you re-tape all joints. Having a piece of insulation sucked into your blower will not turn out well. As mentioned, the heart of your heating system is the furnace–consisting of the heat chamber, blower chamber, attached plenum, and miscellaneous piping leading to, and from, most of the rooms in the house. This is called flanking noise–sounds traveling through the system that will reach into each room. Faulty duct installation can produce a banging or popping sound. Full disclosure. 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. Failing capacitor - upon start up blower motor is straining to start . It's a squirrel cage. Your answer will be used to improve our content. Furnace unit vibrating, blower wheel/motor out of balance or going out? 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. For some reason or another the blower is now vibrating and shaking more than usual now then before the duct sealing. 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. A direct drive motor is connected directly to the furnace’s blower wheel. 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. Locate the oil ports in the motor. Take the furnace's top-section of the faceplate off, and try grabbing stuff; beware the 120v wiring. Buzzing or vibrating can be a couple of things. Install them with X Fasten double sided mounting tape. Older furnaces are usually just metal boxes housing the equipment. I follow the directions provided, or change it when my wife tells me to. Blower motor shall be single speed or two speed two winding as shown … If lub...ricating the motor doesn’t solve the problem, or if your motor can’t be lubricated, replace the motor. Moving blankets will do the job. Carrier/Payne/Bryant HC41AE117 OEM Upgraded Furnace Blower Motor Replacement . Especially if it does not solve the problem. Because, as far as you know, it is the only moving part in there. 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. I believe motor over heat was caused by the vibration that over loaded the motor. (Please see our article ‘How to Soundproof a Floor‘ to help you deal with that.) When the fan turns on, vibrations occur from the fan and motor as the support rattle. I asked what it would take to lessen this noise. If you want any ceiling soundproofing to be effective, I think you will have to address it by soundproofing the floor above. 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.). As a result the V-Belt may be causing a vibration as the belt alternately tries to climb out of the pulleys and then fully engages the pulleys whilst running at speed. How do I smooth it out? Keeprite Model # XXXXX - Furnace makes a vibrating sound when blower fan tries to cut in. Blower Assembly Removal. You will probably have to cut, and tape, the blankets around any ducting, plumbing fixtures, electrical wires and boxes. Furnace blower motor replaced. Sound and vibrations will travel along both the ducting and framing. There is a huge range of furnace filters–from cheap fiberglass to washable, re-usable, electrostatic. The 24v relay on the mother board vibrates,the vent motor … It also must allow good air flow; yet filter out as much dirt, dust, bacteria, and microbes as possible. If you decide to enclose your furnace and/or utility room, soundproofing is fairly easy. But there will be some airborne noise into the room above. New furnace motors and blower fans are very quiet and most new furnaces have soundproofing material in the blower compartment. My preference would be to remove all of the screws, raise the plenum at least 1/8″, fill the gap with sealant, then lower it in place, and re-screw it–adding extra screws if necessary. Someone with a brain .. on all counts. The circulation fan often is to blame, especially if it is attached directly to the metal cabinet. Bubos Acoustic Panels are not only a sound absorbing product but also fire resistant and flame retardant. The door is probably engineered to supply the correct amount of return air to the furnace to provide maximum efficiency. Lubricate the oil … We knew that the inducer motor was rattling very loudly anytime the furnace was on. 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. These noises can be described as squealing, humming, scraping, thumping, banging (usually on start-up), rattling, and rumbling. It is also possible that your duct cleaning contractor will point out any potential problems that he/she encounters. 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. Evam Canada are licensed and insured HVAC enigneers with 20+ years of experience. Check the blower motor and fan for obstructions or excessive dust and clear them away. Now lots of vibration. You might find a siding and/or insulation company that has some left over from a job, and is willing to sell you what you need. Close. If this stops the vibration, you can check the seams and seals of your ducts to repair any loose connections. You may be able to blanket off some of the louvered section–if the door is fully vented–and still get enough air to enable the furnace to function as designed. Buying the Right Lubricant. Very simple. Now lots of vibration. A furnace vibration noise is often caused by an unbalanced blower motor. Belt drive motors are less common on residential furnaces. I removed and replaced the three motor mounting bolts, so they're fine. I would suggest lining it with Guteauto 236 mil automotive sound deadening mat. When the furnace blows warm air the metal ducts expand from the heat. It collects the warm air and directs it through the duct system. Your email address will not be published. The capacitor, a silver device that stores electricity, helps the motor start. Therefore, working inside them is a struggle–at best. If you are not filtering out most of the dust and dirt, not to mention anything else, what is the point of even having a filter? If the capacitor is shot, the motor might buzz. furnace blower, furnace, vibration. Check access panels to make sure they are closing properly and sitting in their frame correctly. 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. It is installed by people the construction industry calls ‘tin bashers’. Oiling the Furnace Blower Motor . The blower motor powers the fan inside the furnace, which blows the cool or hot air from the furnace into your home. Loose fan mounts are especially common in older furnace models, which have circulation fans mounted directly to the furnace cabinet using metal supports. 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. If you are satisfied everything is still OK, then continue to add until you have as much soundproofing as the furnace can handle. Furnace blower motor replaced. Furnace Blower Motor. The furnace heat exchanger shall be constructed of 20 gauge 409 stainless steel tubes, mechanically bonded and 18 gauge headers. 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. Works better to have air or water pressing it into the gap than away from the gap.). 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. Very little on the site is about soundproofing. I seem to find it difficult for a small indoor blower motor to causing the vibration. Then the question is how do determine what is wrong -- a bad bearing or a bad blade. It eliminates any kind of metal on metal rubbing, or tearing of pipe wrapping. Tighten down the clamps that lead from inducer motor to the plastic pipe. 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. Furnace Blower Motor. Imbalance blower wheel or bearing in motor . Loud thumping or vibrating noise Shut your furnace off if you have a compromised mount. You only need about 20 or 30 clips and washers. Low voltage transformer failing . I suspect it's the blower wheel or a bearing in the motor going out. Be careful what you wish for. I have been married to the same wife for 46 years. The heart of the entire system is the furnace. If your furnace vibration noise is bothering you, put a stop to it by contacting Evam Canada. This article does not have the information I am looking for. The blower cabinet in most older furnaces is essentially a hollow tin box with a motor and fan hanging from the top. Our emergency furnace repair technicians are on hand to diagnose your furnace’s issue and restore it to normal working order. vibrating... Read More. It is generally … The back side is fully self-adhesive which is one of the main attractions. If only a section of the door has louvers, don’t mess with it. Search for: Recent Posts. The mounts may be loose or corroded and require tightening and/or replacement to make sure the fan operates smoothly again. Loose parts on your furnace’s housing can cause an annoying vibration sound when the furnace is running. (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.). 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. We have 3 children and 4 granddaughters. How To Fix A Vibrating Furnace. The blower wheel shall be fixed on a keyed shaft, supported in in-shear vibration isolators. I opened up the cover and asked my wife to turn on the AC. See Types of Filters section above. Loose parts are to blame for vibrating sounds from a furnace. The name refers to someone who is usually highly skilled in, and knowledgeable about, a multitude of things most of us know very little about. 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. All that racket coming out of the furnace vents is, invariably, blamed on the furnace and, by extension, the blower. April 21, 2016 admin. It is way more efficient to soundproof the floor above. Just because you hear noise from your heat vent does not mean it is caused by the furnace. Blower motor [ 2 Answers ] My blower motor for my furnace is not spinning. You can frame the room, then insulate the walls and ceiling (if easily accessible) with soundproofing Roxul 80, drywall and finish as required. We bought our condo recently; we have a Bryant Furnace that's about 10 years old. If a room exists–whether the basement is finished or unfinished–I think that hanging sound suppressing blankets on the  walls, and a soundproofing curtain over the doorway are really your only viable solutions. Most main floor furnace rooms are designed to use as little space as possible. I briefly operated the unit without the blower door cover on and the problem still exists. So, the technician pinpoints the cause and it is the indoor motor is causing the vibration. As a last resort you can remove the boot (the part at the end of the duct that gets the air into each room) and cut the pipe shorter by about 1/2″ – 3/4″. 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. Noise from the furnace blower can be very annoying in adjacent rooms. I have never used the product but from the information and reviews, I believe it will do the job. 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. I have also been writing semi-professionally for about 20 years--construction articles, personal stories, and politically incorrect social commentary. If they cannot move lengthwise you will have something called ‘oil canning’. This article contains incorrect information. Always try to have the caulking on the pressure side of anything you are sealing, or between two materials. (Think vinyl siding that is nailed too tight. Squirrel cage fan mounts to motor shaft via set screw. In an unfinished basement there are no adjacent rooms to be concerned about. First I would make sure that the pipes are loose in the hangars, and are not strapped tight to the joists. It's not unheard of … 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. That should solve the problem. Evam Canada Heating & Cooling © 2020 All Rights Reserved. Also try putting little pieces of insulation where piping might be resting on things. If you notice the hum when the motor is slowing down, that can indicate an amperage problem in the motor. The downside of this method is cost. Called starving the suction of the blower. We are a factory authorized dealer for Bryant but also service and install all major manufacturers including Carrier, Payne, Goodman, Keeprite, Lennox, York, Trane, American Standard and more. A broken motor mount causes the blower wheel to drop and rattle against the housing. Unbalanced Blower Motor. 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). Almost invariable it is screwed to the furnace. But in many houses the furnace is just sitting in an open basement. The blower motor – This is the most common source of humming and buzzing noises in a furnace. It may simply be that the motor doesn’t have enough lubrication, but it can also mean that a motor failure is imminent. A blower motor that is or dying or blown often buzzes or hums if power is turned on to the furnace. Dirty Burners. We are a locally owned and operated family business helping our customers with their heating and cooling needs in Mississuaga, Oakville and Milton. You can use duct tape or foil tape. Make sure you check it out first. I am not able to judge that, other than to make the observation that it is much thinner than it was. This is where the oil has to be applied. The plenum is the large metal hat attached to the top of your furnace. 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. 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. Blanket off a small portion (at the top) and check how things work. I understand the speed of the indoor motor can cause a vibration in the ductwork. Loose Fan Mounts If you decide to take this route, go slowly. 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; (Turning my cell phone on is usually an accomplishment.) Pipe brackets, burner parts, cold air returns, access panels into … Also various sizes and thicknesses. When noise arrives with the heat, we either put up with it or try to make it quieter. Eventually things wear, or get loose, and will begin making noise that is carried into your living spaces. Archived. After much experimentation over many years we settled on the Filtrete 1900. You cannot completely blanket the door or change the slab to something solid without adversely affecting the operation of your furnace. You should also soundproof the ceiling to keep noise out of the attic (if there is one) because sound will also travel up there and you could hear the noise in other parts of the house. How do I smooth it out? 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. How Can I Know That My Furnace Is Efficient. When you re-install the duct work make sure that you hang them properly. No, I do not use the Smart Phone App. All we do is turn up the thermostat; then wait for the heat to arrive. Some furnace motors can be lubricated—if your furnace motor can be lubricated, try lubricating it first. The same term is used for the wrinkles in it.) 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 recently sealed all my metal return ducts with mastic along with the return plenum. The motor pulley is not lined up perfectly with the pulley on the air circulation fan. You can fix this problem by carefully tightening all bolts and screws on the exterior of your furnace. The one you choose must be sized for your furnace. Return air ducts are almost always quiet. 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. When is the last time you had your furnace serviced by a professional? You should do this anyway to ensure no air, or whistling noise is escaping from them. Soundproofing the ceiling can be a nightmare as you can see from the attached picture of my utility room. I'm 100% sure that the noise is coming from the motor. Is a furnace vibration noise disturbing your peace and quiet? Cheers from Australia. Inkzine Theme by InkHive. The professor tends to pontificate a bit but there are articles on most types of heating systems. 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. In any case, please shut off the system ASAP when this sound is heard or the repair bill could significantly increase. Answer: Most of the time wobbling inside the furnace is caused by the blower wheel being out of balance. If I did not care about removing them without destroying the ceiling finish I would also use Liquid Nails construction adhesive. If your furnace is making a loud buzzing noise, it may be the result of an off-kilter blower. Over time, the bearings in the blower motor wear out, causing the motor to become noisy. If there was–I would not send you there. To book your service appointment now, give Evam Canada a call at 1-905-624-5544 or contact us online. 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.

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