When your furnace is running like it should, it should give warm air without creating too much sound. While it’s expected to notice your furnace making noise as it begins running, other sounds are indicating your furnace should get immediate professional support.

Here are some of the most reported furnace noises and what they could be signaling. If your furnace is making an atypical noise, our friendly heating specialists are here to help with the best furnace repair in Mankato area, Minnesota.

1. Furnace Making a Banging Noise

You may have a critical problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be a couple of problems. These include gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s essential to schedule annual furnace maintenance with Northern Comfort Inc. One of the things our professionals do during this appointment is clean your furnace’s burners. When this piece gets grimy, you might hear your furnace making a loud rumbling noise after ignition is delayed. The following gas buildup may break your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can leak carbon monoxide, which is normally released outside. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Northern Comfort Inc advises turning it off and contacting us at 507-387-6596. Excessive natural gas in your furnace or a cracked heat exchanger are dangerous problems that require immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide heated air throughout your home. If the ductwork wasn’t installed correctly or is getting old, it can make a lot of noise when your furnace is heating. This may be the issue if your furnace makes a banging noise when it shuts off. Call Northern Comfort Inc at 507-387-6596 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound often is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the right voltage. If wires or the box is loose, you could detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes warm or cooled air throughout your house, and a capacitor, which starts the motor. If either of these pieces are fading, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it may be the result of something minor, like an unfastened screw, or something critical, like a broken piece. In either case, we urge you to shut your furnace off and calling our heating specialists at 507-387-6596 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to get your attention it could use some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn out or a bearing might need to be lubed. We know that maintenance often slips your mind, but our technicians can get your furnace heating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You could also be aware of whistling while the furnace is operating if a floor vent is loose. If you’ve checked your vents but are still sensing sound, Northern Comfort Inc can provide support. It’s critical to get loose ductwork repaired quickly, because it can create comfort troubles in your residence and inflate your energy costs.

6. Furnace Making a Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal sound usually means there’s an issue with your furnace’s blower. Switch off your furnace off immediately and contact us at 507-387-6596 for support.

When you’re hearing an uncommon noise from your furnace, Northern Comfort Inc is ready to support you. Contact us at 507-387-6596 to book your furnace repair appointment right away.