One of them might be coming from your air filter
There is not much more frightening than going to turn on your furnace on a freezing morning, only to discover that it is making noise. There are many main reasons why your furnace may be making noise, plus some causes present more danger than others. Here are some reasons why your furnace may be making noise, plus what you can do about it. If you hear a loud banging noise coming from your furnace, you may have a mechanical problem. Over time, moving parts of your furnace are designed to wear down plus break, plus will need to be upgraded. If the pieces aren’t upgraded in time, they can produce banging noises coming from your furnace. If you hear a banging noise coming from your furnace, it is best to turn off your furnace, plus contact your local Heating plus A/C provider immediately. If you hear a humming sound coming from your furnace, you may have an electrical problem. In the case of a humming sound, it is a great plan to turn off your Heating plus A/C system, plus contact an electrician. The electrical components of your furnace are best taken care of by an electrician. If you hear a high-pitched whistling sound coming from your furnace, it is likely that you have an airflow problem. Airflow troubles can arise from a few unusual situations. One of them might be coming from your air filter. If your air filter is plugged, it may produce a high-pitched whistling sound. Most Heating plus A/C professionals recommend increasing your air filter every 30 to 60 days, especially if you have pets.