The answer to 'furnace repair making noise' is that there could be several common causes, such as a problem with the blower motor, a loose part, or a buildup of dirt and debris. Symptoms may include rattling, squealing, or grinding noises coming from the furnace. Solutions can range from simple DIY fixes like tightening loose parts or cleaning the blower, to more complex issues that require a professional HVAC technician to diagnose and repair.
If the noise is persistent or getting worse, it's best to have a professional inspect the furnace to identify and fix the underlying issue. Attempting to repair a furnace without the proper knowledge and tools can be dangerous and may end up causing further damage. For any major furnace repairs or replacements, it's always recommended to work with a licensed and experienced HVAC technician.