When your furnace is working properly, it should deliver warm air without making too much disruption. While it’s expected to notice your furnace making noise as it turns on, other disruptions are indicating your furnace requires immediate professional assistance.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making an atypical noise, our friendly heating pros are here to fix the problem with the best furnace repair in Monroe, Wisconsin.

1. Furnace Makes Banging or Knocking Sounds

You might have a serious issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a couple of problems. These include gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy over the years, so that’s why it’s critical to book routine furnace maintenance with Lanz Furnace and Fireplace. One of the tasks our techs do during this appointment is clean your furnace’s burners. When this component gets grubby, you might hear your furnace making a loud rumbling noise when ignition is delayed. The following gas buildup can fracture your furnace’s heat exchanger, where natural gas transforms into warmth. Any breaks in it can leak carbon monoxide, which is normally released outside. This dangerous gas can be deadly in large concentrations.

If you’re hearing 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 broken heat exchanger are serious troubles that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move heated air around your home. If the ductwork wasn’t designed right or is getting dated, it can be noisy when your furnace is heating. This may be the case if your furnace makes a banging noise when it shuts off. Get in touch with Lanz Furnace and Fireplace at 608-291-3606 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace depends on an internal transformer to work on the proper voltage. If wires or the box isn’t tight enough, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or chilly air throughout your house, and a capacitor, which starts the motor. If either of these pieces are failing, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

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

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to tell you it needs some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn out or a bearing may need to be lubed. We know that maintenance frequently slips your mind, but our professionals can get your furnace heating quietly again quickly.

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 running if a floor vent isn’t tight. If you’ve looked at your vents but are still hearing noise, Lanz Furnace and Fireplace can assist you. It’s essential to get loose ductwork taken care of without delay, since it can create comfort issues in your house and increase your gas costs.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal noise usually means there’s an issue with your furnace’s blower. Switch off your furnace off instantly and contact our professionals at 608-291-3606 for assistance.

When you’re getting an uncommon noise from your furnace, Lanz Furnace and Fireplace is ready to help. Contact us at 608-291-3606 to request your furnace repair appointment right away.