like it also might necessarily mean the motor needs lubricant—which you may or may not be able to do yourself depending on the furnace make and model.In the event you listen to a grinding noise, turn off your unit and connect with a professional to examine and repair the motor. Continuing to run the unit with damaged bearings could potentially cause far more in depth damage and dearer repair expenses.Sounds Prevention: Schedule maintenance can catch likely sounds-causing issues early, preventing them from establishing into disruptive issues.Having your gear maintained may help improve its lifespan by ensuring that everything is functioning more helpful hints since it must and addressing compact difficulties just before they become a major disaster.