Oftentimes the fan blade is off-balance or bent, or screws or other parts are loose. It’s easy to avoid this problem by regularly changing your furnace filter. Another potential cause for the thumping is a bad indoor fan or capacitor, especially if the furnace is also refusing to blow hot air. The furnace may make a click sound but it wont start. Noticed a louder humming and shaking in the home when we started to use the AC this past week. When checking, interior unit fan and thermostat are operational, outside unit blower is not running. Your email address will not be published. A question regarding a intermittently squeaking blower fan on my furnace. Our email is. 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. This morning I opened the fan compartment and put my hand on the fan, and it feels like the fan is out of balance. Furnace Blower Wheel is out of balance. Lowering the speed, if it works, is a temporary solution to a permanent problem. This will make your furnace sound like your washing machine when it is out of balance. ... allowing some play and a bunch of noise, not usually squeaking, but it's not out of the question. We could not believe that this was a new heating system. So I removed the access panel to see what I could see. He pulled the squirrel cage out of the air handler and rigged it up so the fan would run outside of the cabinet. If you’re hearing weird noises in your furnace, that baby needs some TLC. There are very few moving parts in any air handler. Noise from a wheel out of balance is completely different from noise due to a restriction in air flow from a plugged coil. This just made it worse. We would love to have your business! An unbalanced blower wheel can explode. Part of the installation was a KLR-200 oil furnace made by Granby Industries. When the furnace comes on and you find out it is the fan rattling, ensure there are no loose parts. Below we have a really good YouTube video made by HVAC in SC which shows how to clean a blower wheel. This happens when the spark igniter try’s to ignite the pilot light but fails. it only last for a few seconds and then it runs fine. If you find it is stiff, lubricate the fan wheel with an appropriate lubricant. Maybe it’s an annoying squeak. How to Use a Ceiling Fan Balancing Kit. Have a pro take a look to avoid further damage to your furnace. your furnace inspection today! While minor humming and pops are normal noises that come from the furnace and your overall system, there are several strange furnace sounds you shouldn’t ignore. Not sure if the furnace fan will do ok without an A/C unit. Failure to perform proper preventative maintenance can invalidate a furnace’s warranty. This puts it out of balance, causing obnoxious banging noises. A noisy furnace is almost always a sign that some kind of maintenance needs to be done. Furnace unit vibrating, blower wheel/motor out of balance or going out? This puts it out of balance, causing obnoxious banging noises. This can be a sign of a furnace that is on its way out. us a question The sounds you hear could come from the furnace itself or ducts, so try to identify the location of the noise as you diagnose the problem. When your HVAC system is making unfamiliar or loud sounds, it can be a cause for concern. We’ll explain each possibility. Some scary sounds furnace systems make are indicators of system issues that need attention – sometimes immediately. I have an older (circa 1986) high efficiency furnace that rattles. If the bearings are out then give RSP Heating and Cooling a call at 618-942-2424. If you ever experience a problem with any of your orders, contact us right away and we will make it right. While this is an easy way to start diagnosing your furnace fan noise, there are several other causes of fan sounds. What’s the bad news? The blower motor needs routine lubrication, and often a specific kind of lubrication to upkeep performance and function over time. What could be the problem? I took off the door, reached in, wiggled the squirrel cage to see if it was loose, and it did not appear to be. Like any moving part, the motor occasionally needs some TLC. In general, repairing fans as opposed to buying replacements is highly economical and efficient. OK HVAC gurus. The noise at time is a bit too loud and at times you cannot hear it. It happens when the blower wheel is knocked out of balance, and if furnace repairs are not performed, it will lead to more severe issues for the HVAC system. The filter needs replaced and moving parts need to be cleaned or replaced. You start your furnace up on a cold morning and… What is that? Why is your furnace making a loud noise when it turns on? Thumping sounds that come from your furnace could indicate that a motor or blower wheel is out of balance. Solution: Contact an A/C expert to check for loose parts and make sure your blower and outdoor fan are working properly. 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. ... dirt, crud and pet hair builds up on the blower wheel. Troubleshooting strange furnace sounds in your home. Our technicians have found paper, tin foil, and even birds in furnace fans. 10. This sound can also mean that the indoor blower and outdoor fan blades are out of balance. ... We were in the process of changing out the first ones furnace, and it wasn't too bad so we left it alone. We offer same-day shipping on most products, so you won’t have to do without the goods you need for long. The blower may be simply too old, in which case it may need to be replaced. While many aren’t any cause for concern for Framingham-area homeowners, there are 3 furnace noises you should never ignore: Banging Grinding Whining We’ll explore what’s causing these noises and what should be done to stop them. You may have something sucked up into the wheel causing it to be out of balance. your HVAC company make sure the noise isn’t (like the blade is out of balance and hits the housing) it does not do it at start. This is a ten-year old Goodman GMPN100-4. While this doesn’t start out as a serious problem, it does need to be fixed quickly so that it doesn’t get worse. This is also only found on systems with sheet metal ductwork, and it is usually from the return trunk. Customer Satisfaction. Noisy Draft Inducer A draft inducer (or vent blower) is the most common problem on a gas furnace or boiler to cause a noticeable noise. Clanging from Blower Compartment. Just how exactly does one take a look at the blower? that banging checked out. I just put a new motor in it and the same problem exists. Old furnaces can make all sorts of noises. If it’s not getting it, it’ll wear out eventually. The fan blades were caked with dust... so I figured it was just out of balance. Our HVAC technicians suggest replacing the filter once every three months or as soon as it’s no longer a clean white color. If you are in the Scranton, PA or Wilkes-Barre, PA area and are having problems with your furnace making a loud noise when it turns off, contact the furnace repair experts at T.E. The most common reason for an unbalanced blower wheel is a lack of maintenance. If the fan is the cause of the noises, there’s a good chance that something is caught in it. He thinks either the fan motor bearings are bad or the blower wheel is out of balance or bent, which is causing it to scrape the squirrel cage at high speeds. Any of these sounds could indicate that the blower wheel is out of balance. The company that did the installation cleaned the blower wheel of drywall dust and it helped with some of the noise. Unlike many duct sounds, you shouldn’t take unexpected noise from your furnace in stride. One of the top sounds experienced by home owners is the furnace blower fan making noise. I just put a new motor in it and the same problem exists. ... Or if the fan blades are impacted with dirt it will throw it out of balance and make it rub. Just how exactly does one take a look at the blower? When the fan first starts the duct pops in from the negative pressure of the fan. Thanks so much for this informative video! Answer: Most of the time wobbling inside the furnace is caused by the blower wheel being out of balance. This puts it out of balance, causing obnoxious banging noises. The weights are one or two are little pieces of U shaped metal that friction fit on to the blower wheel fins. Furnace sounds. Have been in a new build house for almost 3 years. Managed by Wooassist - Woocommerce Support www.wooassist.com. You either have a broken motor bracket or a bad blower wheel. I have a lennox elite furnace air conditioner. I think it is coming from the blower, but it seems to be turning freely and again, it runs fine with the AC. Why is my Furnace Making Knocking Sounds? Furnace - Blower Fan Shaft Moving Discussion in 'The BS Topic' started by mgd1790 , Jan 2, 2018. caused by the blower wheel. Also check that the fan turns easily. I have a nice dehumidifer I will run also. Most balance and vibration problems can be detected by a fan service professional. You should still, however, get it checked as soon as possible because out of balance blower wheels and motors that aren’t corrected can create bigger problems down the line, leading to a furnace suddenly quitting. Could something else … ... crud and pet hair builds up on the blower wheel. 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