If it’s coming from the furnace itself, it might be some sort of leak that should be checked by a technician. If you have a preventive maintenance plan with Estes Services, your technician handles this during an Atlanta furnace maintenance tune up. Purchased a high efficiency Carrier furnace to be installed with the build. A screeching noise that comes from the furnace is most probably due to motor bearing problems. This could mean that your compressor is failing. We’ve been in the HVAC and furnace repair business for more than 100 years, and we’re here to help. The company that did the installation cleaned the blower wheel of drywall dust and it helped with some of the noise. Depending on how old your house is, your furnace may have an inducer motor. If the set screw is loose, the blower wheel will wobble on the motor shaft, and the wheel will be noisy as it turns. Screeching. The motor requires regular lubrication to maintain top performance. Sometimes, a broken blower wheel can also be the source of this distinct noise. Contact a professional immediately if you cannot fix the rattling noise by tightening the panels and screw. Clean the furnace blower carefully before plugging it and using again. Then, carefully vacuum any dust in or near the burners, blower compartment or furnace base. Whine, Squeak, Squeal. You may be dealing with a bad belt, a problem with the motor bearings or even a broken part. Furnace Blower Motor Noise. However, if this rattle noise is happening when the furnace is first started up, it may be an issue with the motor bearing or a cracked fan belt. Furnace blower motor rattling noises can become annoying fast. It also could a pulley with failing bearings. Loose Cover Panels. The blower wheel is attached to the blower motor shaft with a set screw. Grinding and scraping furnace noises usually point to dry bearings within the furnace blower motor. This high-pitched noise is persistent and grating, so it’s unlikely that you’ll try to simply ignore it. When your furnace blower is making noise like humming, screeching, or thumping, it can be a sign of wear or damage. If you’re hearing a loud screeching sound along with a rattle when you turn the furnace on, this could be the bearings in the blower motor, or the motor itself. Bad Motor Bearing or Cracked Fan Belt. If the noise is loud or sounds more like a bang than a ping, call a professional. This is a handy dandy piece of equipment that keeps harmful chemicals, like carbon monoxide, out of your home. Rattling (From the Outside Compressor or Fan Unit) Another common HVAC noise is rattle. (Here’s what this sounds like) Check … Do any of these noises sound eerily familiar to you? Once summer came and the blower ramped up for A/C, it got really noisy. When the metal inside cools down, your furnace may rattle. From the very start, the furnace was loud. Tighten properly the bearings using the wrench and wipe out any excessive lubricants. If you find yourself hearing a strange noise from the furnace inducer motor, we just might have the solution. Have been in a new build house for almost 3 years. Lastly, you need to test the furnace blower by setting its thermostat and allowing it to run for at least 5 minutes. This sound may come from a loose blower belt, dry shaft bearings, or a damaged blower motor. Or it could be a worn-out compressor clutch. These bearings need regular lubrication to maintain proper function. 2. Rumbling. Moreover, the motor mount may have broken causing the blower assembly to hit the housing. If you want to clean the burners yourself, turn off your furnace system and then the power supply. Once the bearings are installed, put back the furnace blower motor as well. Screeching noises. The blower wheel blows air out of the furnace and through the house.

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