When your furnace is working like it should, it should give warmth without making too much noise. While it’s normal to notice your furnace making noise as it turns on, other disruptions are showing your furnace requires immediate professional support.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making a strange noise, our friendly heating professionals are here to help with the best furnace repair in Monroe, Wisconsin.

1. Furnace Makes a Banging Sound

You might have a serious situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might signal there could be a few problems. These involve gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy as time passes, so that’s why it’s critical to set seasonal furnace maintenance with Lanz Furnace and Fireplace. One of the things our professionals do during this service is clean your furnace’s burners. When this part gets grubby, you may hear your furnace making a loud rumbling noise if ignition is delayed. The resulting gas buildup may crack your furnace’s heat exchanger, where natural gas changes into warm air. Any breaks in it can emit carbon monoxide, which is ordinarily vented outside. This toxic gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Lanz Furnace and Fireplace advises turning it off and contacting us at 608-291-3606. Significant natural gas in your furnace or a ruptured heat exchanger are serious issues that require prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move heated air across your residence. If the ductwork wasn’t designed right or is getting dated, it can be loud when your furnace is heating. This could be the issue if your furnace makes a banging noise when it shuts off. Call Lanz Furnace and Fireplace at 608-291-3606 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound usually indicates an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to operate on the proper 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 moves heated or cooled air across your rooms, and a capacitor, which triggers the motor. If either of these components are failing, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it may be related to something little, like an unsecure screw, or something major, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating specialists at 608-291-3606 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to get your attention it requires some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn down or a bearing could need to be greased. We are aware that maintenance frequently slips your mind, but our pros can get your furnace running quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You could also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve checked your vents but are still sensing sound, Lanz Furnace and Fireplace can help. It’s critical to get loose ductwork fixed fast, as it can result in comfort problems in your residence and drive up your energy expenses.

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 frequently means there’s an issue with your furnace’s blower. Shut down your furnace off right away and contact us at 608-291-3606 for assistance.

When you’re hearing an uncommon noise from your furnace, Lanz Furnace and Fireplace is here to provide assistance. Contact us at 608-291-3606 to book your furnace repair appointment now.