How To Quiet A Noisy Furnace Blower 6 Easy Steps Sometimes the noise coming from your furnace may be due to the fact that there’s a loose belt inside the furnace blower. if you check, and the belt is actually loose, then it’s best to replace it with a new one. 3. fill all the gaps in the ducts. if the filters are working properly, but your furnace is still making a whistling noise, this. It may be possible to reduce the noise level by changing the furnace or blower enclosure. blower enclosures made of metal can cause more noise than plastic, fiberglass, or other materials. blower covers with sound attenuation materials can reduce blower noise up to 10 db (a). a quieter running motor will run at less power, reducing energy.
How To Quiet A Noisy Furnace Blower Step By Step Guide 2023 Step 1: power off. turn the power off to the furnace and locate the furnace blower motor. locate and take note of the furnace blower location, as well as where each wire is. you may want to take a picture with your mobile phone to note the wire location. 6. check the blower motor belt. many quiet furnace blowers are belt driven, similar to a car’s engine. a dirty, misaligned, and or slipping belt can make squealing noises. in a worst case scenario, the belt can slip off or even break. clean the belt with a clean cloth and make sure it’s properly aligned. Adjusting the fan speed can help eliminate the noise from your furnace blower. oiling the blower motor: use 3 in 1 motor oil to lubricate the blower motor axle. note that some blower assemblies have removable plastic cops on each end. remove them and squirt a few drops of oil into them. Make sure you order the correct one. scraping – the sound of metal rubbing on metal. this can be caused by a loose or broken motor mount, a loose or broken blower wheel, or loose pulleys that are touching the motor housing or squirrel cage housing. inspect all of these. make sure all parts are tight.
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