When your furnace is operating correctly, it should provide warm air without making too much sound. While it’s expected to hear your furnace making noise as it turns on, other sounds are showing your furnace requires immediate professional assistance.

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

1. Furnace Making a Banging Noise

You may have an urgent situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be several problems. These range from gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over the years, so that’s why it’s essential to book yearly furnace maintenance with House of Heating Incorporated. One of the tasks our pros do during this appointment is clean your furnace’s burners. When this piece gets dirty, you might hear your furnace making a loud rumbling noise after ignition is delayed. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas transforms into warmth. Any breaks in it can discharge carbon monoxide, which is regularly released outdoors. This hazardous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, House of Heating Incorporated advises turning it off and calling us at 715-384-3163. Too much natural gas in your furnace or a cracked heat exchanger are hazardous troubles that require immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move heated air throughout your residence. If the ductwork wasn’t put in properly or is getting dated, it can be noisy when your furnace is on. This could be the issue if your furnace makes a banging noise when it shuts off. Get in touch with House of Heating Incorporated at 715-384-3163 and we’ll determine the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box is loose, you could notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or cold air throughout your space, and a capacitor, which starts the motor. If either of these components are going out, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be due to something small, like a loose screw, or something serious, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating pros at 715-384-3163 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to alert you it needs 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 know that maintenance sometimes slips your mind, but our professionals can get your furnace operating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You might also hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve examined your vents but are still sensing sound, House of Heating Incorporated can provide support. It’s essential to get loose ductwork fixed without delay, as it can make comfort troubles in your residence and drive up your energy expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal sound typically means there’s a problem with your furnace’s blower. Shut down your furnace off right away and reach our pros at 715-384-3163 for assistance.

When you’re noticing a weird noise from your furnace, House of Heating Incorporated is available to provide assistance. Contact us at 715-384-3163 to schedule your furnace repair appointment today.