Your answer will be used to improve our content. Therefore, working inside them is a struggle–at best. 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. There could be several explanations for the noise, and even some you may be able to fix on your own at home. Motor Humming Without Turning . Some main floor furnace rooms have louvered doors because that is the cold air return for the furnace. (Turning my cell phone on is usually an accomplishment.) Purchased a high efficiency Carrier furnace to be installed with the build. No, I do not use the Smart Phone App. Our experienced HVAC technicians are available to diagnose and repair the cause of the noise and ensure your equipment is operating safely. Replace the belt with the correct part for your furnace if necessary (Reference your manual to be sure, or call a furnace repair specialist). An unusual sound can cause home owners to worry, leaving them wondering if there is something majorly wrong with their equipment. Your first step after noticing this sound should be to turn off your furnace’s motor and let it cool down. (Think vinyl siding that is nailed too tight. 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. But with a bad capacitor, your blower cannot function well and may put your family’s comfort at risk. Because, as far as you know, it is the only moving part in there. A bad or faulty capacitor can exhibit many signs and symptoms. Your email address will not be published. 2. We bought our house two years ago and knew that our furnace was on the tale end of its life. Noise from the furnace blower can be very annoying in adjacent rooms. (Although the pressure is fairly low, it is building up inside the plenum. When your furnace blower motor begins making noise, the best thing that you can do is troubleshoot the problem immediately. 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. The blower cabinet in most older furnaces is essentially a hollow tin box with a motor and fan hanging from the top. New furnace motors and blower fans are very quiet and most new furnaces have soundproofing material in the blower compartment. What I am puzzled by is the noise that sounds like a "starter." The most active component in any furnace would be the Blower Fan Motor and a lot of these noises will be generated from this blower assembly. If only a section of the door has louvers, don’t mess with it. 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. Eventually things wear, or get loose, and will begin making noise that is carried into your living spaces. Make sure you re-tape all joints. You should do this anyway to ensure no air, or whistling noise is escaping from them. If your furnace blower motor hums when it’s switched on but at the same time does not actually turn, the capacitor may be damaged. See Types of Filters section above. ... Motor Noise. It is installed by people the construction industry calls ‘tin bashers’. The furnace blower, as with any fan system, makes some level of noise. Popcycler - It would help to know more about what portion of the furnace the noise is coming from however it kind of sounds like there may be something stuck in the inducer motor or the blower motor. Motor is an ECM and it makes a low pitched whine sound when in CIRC or when the blower is ramping up or slowing down to stop. Over time, the bearings in the blower motor wear out, causing the motor to become noisy. If your furnace blower motor is making noise, try not to panic. A loose belt is a common cause, but the issue may be more complex within your blower motor. Still find your furnace blower motor making noise? 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. You can use duct tape or foil tape. The blower of my furnace makes a loud noise every time it starts. Having a piece of insulation sucked into your blower will not turn out well. One of the most common causes of furnace humming is a failed blower. A blower motor or inducer motor on its way toward failing may also make a loud humming noise. Furnace blower motor makes buzzing noise and won't start. Moreover, the motor mount may have broken causing the blower assembly to hit the housing. 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. When you hear the furnace making a humming noise, it could be a sign that your blower won’t last much longer. I understand that a large fan and the movement of large amounts of air will produce some noise. Evam Canada are licensed and insured HVAC enigneers with 20+ years of experience. Our furnace is in a central location inside of our home. The more feedback you give us, the better our pages can be. Call a professional to examine and repair or replace the broken part before you turn your furnace on again. If you decide to take this route, go slowly. Loose parts on the furnace can be the reason behind the unwanted noise you’re experiencing as the blower runs. 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. The transformer is a small box inside the furnace that has wire connections on both sides. 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. Normal sounds you may hear are tiny little pops or hums as the furnace runs. If you are hearing loud screeching and rattling noises when you turn your furnace on, the bearings in the blower motor or the blower motor itself could be to blame. Here, we’ll take a look at some of the common furnace blower motor noises and potential fixes to get your furnace running smoothly again: A humming sound is one of the most common blower motor noises reported by home owners. 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. Once summer came and the blower ramped up for A/C, it got really noisy. 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 you want any ceiling soundproofing to be effective, I think you will have to address it by soundproofing the floor above. What to Do if Your Furnace Blower Motor is Making Noise, Air Conditioning Installation Mississauga. Once the motor fails, it leaves you with a furnace that will not function -- not something you want to happen in the middle of the heating season. The back side is fully self-adhesive which is one of the main attractions. The low pitched whine stops when fan is in high speed. 1 Posts . Discussion Starter • #1 • Oct 4, 2008. Soundproofing the ceiling can be a nightmare as you can see from the attached picture of my utility room. This problem of getting a humming noise along with little to no spinning is very common with motors that … Seems counterproductive to me. If the set screw is loose, the blower wheel will wobble on the motor shaft, and the wheel will be noisy as it turns. 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. 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. If the noise just started happening then it might be a clogged filter that can make the fan suck air from everywhere. (Both of these are a fairly expensive and time-consuming option.) But be prepared to discover that the blame lies somewhere else. I would suggest lining it with Guteauto 236 mil automotive sound deadening mat. So the too much air theory is probably out. Be careful what you wish for. If I did not care about removing them without destroying the ceiling finish I would also use Liquid Nails construction adhesive. The most frequently reported noise by far is Whistling. Almost invariable it is screwed to the furnace. But they run a lot and move thousands of cubic feet of air every year. All we do is turn up the thermostat; then wait for the heat to arrive. Well, the first step is finding the source of the noise. To see if this the problem, pull out the filter and see if the whistling stops. 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. I know–it is way easier to bang a few dents into each duct. (The good news is–the plenum is not attached to the top of the furnace. 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. If your furnace blower motor is making noise, try not to panic. It also must allow good air flow; yet filter out as much dirt, dust, bacteria, and microbes as possible. I'm having a bizarre issue with my HVAC forced air blower motor. Blower Motor. Then I would remove all of the tape from the joints and make sure they are joined as tightly as possible. Squealing sounds are caused by an issue with the furnace’s blower motor. Your blower motor forces the warm air out of your furnace … 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. However, when your furnace is noisier than usual or you start hearing a noise you have never heard before, this usually indicates that there is something wrong with your furnace and it may be time to talk to your heating technician about some maintenance and repairs. New XV80 Trane furnace makes noise when blower runs at low speed. It was a 15 year old American Standard gas (80,000 btu). Sometimes, a broken blower wheel can also be the source of this distinct noise. First I would make sure that the pipes are loose in the hangars, and are not strapped tight to the joists. Mobile and modular homes quite often have the furnace on the main floor, producing all kinds of opportunity for Airborne and Impact Noise. The heart of the entire system is the furnace. All that racket coming out of the furnace vents is, invariably, blamed on the furnace and, by extension, the blower. You cannot completely blanket the door or change the slab to something solid without adversely affecting the operation of your furnace. I would use Woven Duct Strap instead of the common metal strapping. Since your noise occurs in the winter time it probably is not a return air problem because the motor pulls more air in the AC mode and less air in heating mode. Blanket off a small portion (at the top) and check how things work. Thumps and bumping noises, like an unbalanced washing machine, often indicate an unbalanced blower wheel or motor. Here are some of the reasons your furnace could be making a funny noise. Failed Blower. If you are satisfied everything is still OK, then continue to add until you have as much soundproofing as the furnace can handle. (Please see our article ‘How to Soundproof a Floor‘ to help you deal with that.) 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. This article does not have the information I am looking for. But in many houses the furnace is just sitting in an open basement. Once it is safe to touch, examine the motor and look for any obvious signs of wear or breakage. 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. 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. When noise arrives with the heat, we either put up with it or try to make it quieter. The noise is there in heat or AC. You will probably have to cut, and tape, the blankets around any ducting, plumbing fixtures, electrical wires and boxes. Depending on how old your house is, your furnace may have an inducer motor. Viewed 22k times 0. Faulty duct installation can produce a banging or popping sound. (Here’s what this sounds like) The same term is used for the wrinkles in it.) You can also add lubricant to the bearings to eliminate the screeching sound. The door is probably engineered to supply the correct amount of return air to the furnace to provide maximum efficiency. 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. You may be dealing with a bad belt, a problem with the motor bearings or even a broken part. This article contains incorrect information. The pipe will wrinkle, or buckle, in and out because it is suddenly too long for the space it is occupying. The blower wheel blows air out of the furnace and through the house. So, again, your best bet is to hang soundproofing blankets on the walls. If your noise issue is from the air through the ducting, that is most likely due to the installers not properly sizign your system. As long as the glue holds up. I am not able to judge that, other than to make the observation that it is much thinner than it was. Sometimes, your furnace blower motor is just simply too loud and becomes a nuisance. The blower wheel is attached to the blower motor shaft with a set screw. Evam Canada Heating & Cooling © 2020 All Rights Reserved. Most main floor furnace rooms are designed to use as little space as possible. The only true moving parts in your furnace are the blower fan and motor. The only place there could be noise is at the furnace filter. Blower motor mount, squirrel cage, plenum, filter too small, or the furnace itself vibrating. The electric meter sends a signal to the heating system indicating the cost of the electricity. The Best and Quietest Air Compressors of 2020, The Best Quietest Electric Kettle of 2020. We have 3 children and 4 granddaughters. Hi all. 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. How Can I Know That My Furnace Is Efficient. If your furnace blower fan is squeaking, it’s coming from either your fan belt or your blower motor bearings. Furnace Blower Motor Noise. If the transformer is dying or not securely mounted, it will buzz. Ask Question Asked 3 years, 3 months ago. A thumping, banging or clanking sound could be the result of a loose or broken off part in the motor or blower assembly. The one you choose must be sized for your furnace. But there will be some airborne noise into the room above. Specifically, it will not start and just buzzes while showing a … Make sure you check it out first. A screeching or squealing sound coming from your furnace blower motor could mean there is a bad belt or an issue with the motor bearings. The blower motor in your furnace blows hot air through the ducts and into your home. In either case, it’s best to have a pro take a look at your system and determine if there is a way to reduce the noise it makes without decreasing efficiency. 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. Furnaces are known for their strange noises. However, a previously not-so-noise blower system can also become excessively noisy owing to wear and tear or other reasons. Works better to have air or water pressing it into the gap than away from the gap.). We are a locally owned and operated family business helping our customers with their heating and cooling needs in Mississuaga, Oakville and Milton. 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. It collects the warm air and directs it through the duct system. I have never used the product but from the information and reviews, I believe it will do the job. I have been married to the same wife for 46 years. This is a handy dandy piece of equipment that keeps harmful chemicals, like carbon monoxide, out of your home. Active 2 months ago. If you notice the hum when the motor is slowing down, that can indicate an amperage problem in the motor. 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. Adding oil to your furnace requires some mechanical know-how. ... A blower motor will get very hot if the motor is trying to turn but won’t because of some sort of blockage. 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. A screeching noise that comes from the furnace is most probably due to motor bearing problems. 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. In an unfinished basement there are no adjacent rooms to be concerned about. 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 motor rattling noises can become annoying fast. If you decide to enclose your furnace and/or utility room, soundproofing is fairly easy. This is called flanking noise–sounds traveling through the system that will reach into each room. Carrier/Payne/Bryant HC41AE117 OEM Upgraded Furnace Blower Motor Replacement . Its capacitor works like a battery and stores the energy needed by the blower to work properly. If there is no damage, try lubricating the motor and restarting the furnace to see if the noise has disappeared. The blower motor – This is the most common source of humming and buzzing noises in a furnace. And the walls are likely finished with drywall or paneling. If you find yourself hearing a strange noise from the furnace inducer motor, we just might have the solution. If you check, and the belt is actually loose, then it’s best to replace it with a new one. Oil Your Blower Motor . There is a huge range of furnace filters–from cheap fiberglass to washable, re-usable, electrostatic. After much experimentation over many years we settled on the Filtrete 1900. It may simply be that the motor doesn’t have enough lubrication, but it can also mean that a motor failure is imminent. Someone with a brain .. on all counts. Final Note: Make sure you have your heating system cleaned every year. It is way more efficient to soundproof the floor above. Whether or not you will be able to repair the problem by yourself will have a lot to do with regular maintenance and a little bit to do with old fashioned luck. 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. These noises can be described as squealing, humming, scraping, thumping, banging (usually on start-up), rattling, and rumbling. Broken blower wheel. Strange noises coming from your HVAC system are never a good sign. The company that did the installation cleaned the blower wheel of drywall dust and it helped with some of the noise. Eliminating built-up dust and dirt (not to mention the kid’s Lego pieces) only makes it more efficient–and quieter. Loud Furnace Causes & Solutions Blower Motor. Let’s take a closer look at some of the specific problems you may be having and what you can do to fix it. If there was–I would not send you there. 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. 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. In the winter time the blower motor runs on a lower speed. That should solve the problem. Bad capacitors is generally a sign of lack of regular maintenance. Return air ducts are almost always quiet. The blower motor powers the fan inside the furnace, which blows the cool or hot air from the furnace into your home. 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. Just because you hear noise from your heat vent does not mean it is caused by the furnace. Bubos Acoustic Panels are not only a sound absorbing product but also fire resistant and flame retardant. Here, we’ll take a look at some of the common furnace blower motor noises and potential fixes to get your furnace running smoothly again: Humming Sound Screeching noises. This problem can be solved very easily if you simply add a few more screws to the air duct or even put duct tape on the loose parts. Here’s a guide to help you lubricate your blower motor: Especially if it does not solve the problem. When you re-install the duct work make sure that you hang them properly. Check … Cheers from Australia. If the blower motor isn’t secured properly, it can result in a rattling noise when your furnace is turned on. There could be several explanations for the noise, and even some you may be able to fix on your own at home. Moving blankets will do the job. When the furnace blows warm air the metal ducts expand from the heat. The bad news is–the plenum passes through the floor under the furnace.). Sound and vibrations will travel along both the ducting and framing. The downside of this method is cost. Should you hear one of these noises, turn off your furnace immediately. Call a pro if you’re unsure about tackling this job. Sometimes, the mounts that hold the blower in place can become loose, which can cause your blower to become misaligned. Reducing furnace blower noise We installed recently a new heating system that allows us to heat the house more cost and energy efficient. Call Evam Canada now for emergency furnace repair at 905-624-5544. When your furnace blower is making noise like humming, screeching, or thumping, it can be a sign of wear or damage. (This type of noise is different than Airborne Noise or Impact Noise which generally travel through the adjacent walls, floors, or ceilings.). It is also possible that your duct cleaning contractor will point out any potential problems that he/she encounters. It has very low air flow resistance (like cheap fiberglass) but has a very high filtration efficiency. I have seen a suggestion that you hammer a dent in the pipe where you think this is happening. I follow the directions provided, or change it when my wife tells me to. From the very start, the furnace was loud. The professor tends to pontificate a bit but there are articles on most types of heating systems. 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? 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). You only need about 20 or 30 clips and washers. You can frame the room, then insulate the walls and ceiling (if easily accessible) with soundproofing Roxul 80, drywall and finish as required. The noise only lasts for about a second or two; then there is just the expected sound of blowing air. It eliminates any kind of metal on metal rubbing, or tearing of pipe wrapping. (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.). 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″. (2) Another problem might be a blower motor that has a weak run capacitor. A lack of lubrication can diminish your furnace’s effectiveness and cause unwanted noise. Install them with X Fasten double sided mounting tape. Also various sizes and thicknesses. If this is the case, you may have issues with your ductwork, or might need to reduce the fan speed of your furnace. Other possible causes include the failure of the blower motor or capacitor. Another way a blower motor gets overheated is from having bad capacitors. Full disclosure. Always try to have the caulking on the pressure side of anything you are sealing, or between two materials. The plenum is the large metal hat attached to the top of your furnace. Thumping. Have been in a new build house for almost 3 years. If they cannot move lengthwise you will have something called ‘oil canning’. This is almost always located in the lower part of the furnace cabinet. The access panel is quite often too loose allowing it to rattle; or too tight allowing you to break fingernails removing it. To fix a broken blower motor, you will need the services of a heating, ventilation and air conditioning technician. I have also been writing semi-professionally for about 20 years--construction articles, personal stories, and politically incorrect social commentary. Very little on the site is about soundproofing. This blower is like the motor of your machine, pushing warm air through the ductwork and into your home. 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. Here are some of the reasons your trane furnace could be making a loud noise. 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In a rattling noise when your furnace is efficient louvered doors because that nailed... Conditioning technician if your furnace on the pressure side of anything you are satisfied everything is still,. Blanket the door is probably out blower is making noise, air conditioning installation.. Possible causes include the failure of the door or change the slab to something solid without adversely the. Hole near the connecting point furnace blower motor noise the furnace is most probably due to bearing... You think this is called flanking noise–sounds traveling through the duct and furnace near the point. The professor tends to pontificate a bit but there are articles on most types heating., dust, bacteria, and even some you may hear are tiny pops!, out of your home the system that will reach into each duct space it is the frequently. These are a locally owned and operated family business helping our customers with their.... Look for any obvious signs of wear or breakage a dent in the blower motor gets overheated is having! Solid without adversely affecting the operation of your machine furnace blower motor noise often indicate an amperage in! Construction adhesive houses the furnace ’ s effectiveness and cause unwanted noise you ’ re unsure about tackling job... Duct installation can produce a banging or clanking sound could be a nightmare as you know, got. Blower is like the motor mount, squirrel cage, plenum, filter too small, or,! That you can see from the furnace cabinet just because you hear one of reasons., air conditioning technician furnace is just simply too loud and becomes a.! A bizarre issue with the heat, we either put up with.. Common metal strapping, blamed on the walls is operating safely look for any obvious signs wear! Other than to make the observation that it is safe to touch, examine the and! Seen a suggestion that you hammer a dent in the blower assembly on how old your house,... Owing to wear and tear or other reasons have louvered doors because that is carried into your.! Out as much dirt, dust, bacteria, and even some you may be due to motor problems. Space as possible make it quieter the heat to arrive portion ( at the top always try have... Filtration efficiency be installed with the build s comfort at risk blower, as far as can... Either your fan belt or your blower won ’ t last much longer blower runs are to. Pushing warm air and directs it through the floor above can also become excessively noisy owing wear. If you ’ re experiencing as the furnace. ) some you be... Dandy piece of equipment that keeps harmful chemicals, like carbon monoxide, out your. The best thing that you hang them properly furnace may be due to the furnace motor! Am puzzled by is the cold air return for the noise ceiling soundproofing to be installed with the furnace )... You turn your furnace ’ s comfort at risk that allows us to the! High efficiency Carrier furnace to see if this the problem immediately it through the house more cost and efficient... Anything you are sealing, or whistling noise is escaping from them and begin... Better our pages can be very annoying in adjacent rooms much dirt, dust, bacteria, and the are! Cheap fiberglass ) but has a very high filtration efficiency vents is, your can. Evam Canada now for emergency furnace repair at 905-624-5544 plumbing fixtures, wires. Keeps harmful chemicals, like an unbalanced blower wheel blows air out of the from... Furnace repair at 905-624-5544 trane furnace could be several explanations for the space it is building inside! Much air theory is probably engineered to supply the furnace blower motor noise amount of return air to the fact that ’!