When your furnace is working correctly, it should provide warm air without making too much disruption. While it’s normal to catch your furnace making noise as it begins running, other sounds are signaling your furnace needs immediate professional assistance.

Here are some of the most frequent furnace noises and what they might mean. If your furnace is making a weird noise, our friendly heating specialists are here to help with the best furnace repair in Wausau, Wisconsin.

1. Furnace Making a Banging Noise

You may have a serious situation 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 building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy as time passes, so that’s why it’s essential to set seasonal furnace maintenance with Gilray Heating and Cooling. One of the jobs our technicians complete during this work is clean your furnace’s burners. When this part gets grimy, you might hear your furnace making a loud rumbling noise if ignition takes more time. The subsequent gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can emit carbon monoxide, which is ordinarily vented away from your home. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Gilray Heating and Cooling advises turning it off and reaching us at 715-301-0727. Excessive natural gas in your furnace or a broken heat exchanger are critical problems that should get fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air around your home. If the ductwork wasn’t installed properly or is getting old, it can make a lot of noise when your furnace is heating. This might be the case if your furnace makes a banging noise when it shuts off. Contact Gilray Heating and Cooling at 715-301-0727 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 often means there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the correct voltage. If wires or the box needs to be tightened, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends warm or cooled air around your rooms, and a capacitor, which triggers the motor. If either of these components are failing, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be related to something small, like an unfastened screw, or something major, like a broken component. In either case, we advise shutting your furnace off and contacting our heating pros at 715-301-0727 for assistance.

4. Furnace Making a Squealing Noise

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

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You could also hear whistling while the furnace is operating if a floor vent is loose. If you’ve examined your vents but are still sensing whistling, Gilray Heating and Cooling can assist you. It’s essential to get loose ductwork repaired without delay, as it can make comfort issues in your home and increase your energy expenses.

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 sound frequently means there’s trouble with your furnace’s blower. Shut down your furnace off promptly and contact our professionals at 715-301-0727 for support.

When you’re hearing a weird noise from your furnace, Gilray Heating and Cooling is here to provide assistance. Contact us at 715-301-0727 to request your furnace repair appointment now.