If your furnace has stopped generating heat, then it is obvious that you are in need of immediate furnace repair. However, if you pay attention to the noises that your furnace is making, you can generally tell problems are occurring prior to the furnace breaking down completely. If you hear any of the following noises coming from your residential heat and air system, then you should consult with a professional furnace repair contractor as quickly as possible to prevent a larger issue.
High-pitched squealing or whining sounds are typically the result of a damaged or loose belt. This is generally an inexpensive and simple repair job. There is another possibility, though, for this sound. Shaft bearings that need lubricating can also cause whining noises. Generally, this is a quick fix as well with some lubricant that is designed for fan motor bearings.
If you notice the sound of metal scraping against more metal, then this is a sign that there is an issue with the blower wheel. The blower wheel may be broken, and as a result, scraping against its own housing, or the motor mount may have loosened, allowing the assembly to tilt. In some cases, this may be a simple repair, only needing a few nuts tightened. Alternatively, part or all of the blower may need to be replaced.
If there is a banging noise coming from the heating system, then there may be a dirty or clogged burner. When there is a clog, there will be a delay in the ignition. The banging noise occurs once the accumulated gas finally ignites in the burn chamber during that ignition delay. If the delay gets longer and longer, this can actually become really dangerous. Therefore, if you hear a banging noise and realize that your furnace isn't igniting as quickly as it should, it is important to schedule a furnace repair appointment as soon as possible for the burner to be cleaned and get rid of this problem.
If you notice any of the aforementioned noises with your furnace or any other unusual noises coming from your furnace, it is important that your system is inspected by a furnace repair professional sooner rather than later to ensure that nothing serious is wrong with your system. If you have any questions or would like to schedule an appointment, contact a furnace repair service in your area today.