When your furnace is working properly, it should provide heat without generating too much noise. While it’s normal to notice your furnace making noise as it begins running, other sounds are signaling your furnace should get immediate professional support.
Here are some of the most reported furnace noises and what they might mean. If your furnace is making an odd noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Mankato area, Minnesota.
1. Furnace Making a Banging Noise
You could have a critical problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may indicate there could be a few problems. These range from gas accumulating in your furnace or a ductwork situation.
Banging Sounds Coming from Your Furnace
Your heating system turns grimy over time, so that’s why it’s critical to set routine furnace maintenance with Northern Comfort Inc. One of the tasks our pros complete during this work is clean your furnace’s burners. When this piece gets grubby, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The resulting gas buildup may fracture your furnace’s heat exchanger, where natural gas turns into heat. Any breaks in it can emit carbon monoxide, which is regularly emitted away from your home. This toxic gas can be lethal in large concentrations.
If you’re hearing banging or knocking sounds coming from your furnace, Northern Comfort Inc recommends turning it off and calling us at 507-387-6596. Too much natural gas in your furnace or a broken heat exchanger are serious problems that should get fast service.
Banging Sounds Coming from Your Ductwork
Your furnace uses ductwork to provide heated air across your home. If the ductwork wasn’t put in properly or is getting old, it can make a lot of noise 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 Northern Comfort Inc at 507-387-6596 and we’ll figure out the problem.
2. Furnace Making a Buzzing Noise
If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often means there’s an electrical problem, like with its transformer, blower motor or capacitor.
Your furnace uses an internal transformer to run on the correct voltage. If wires or the box is loose, you could detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes warm or cold air across your residence, and a capacitor, which turns on the motor. If either of these parts are fading, they will buzz when the furnace starts.
3. Furnace Making a Rattling Noise
If your furnace is making a rattling noise, it could be related to something small, like a loose 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 Making a Squealing Noise
If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to alert you it needs some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn out or a bearing might need to be greased. We know that maintenance often slips your mind, but our professionals can get your furnace heating quietly again quickly.
5. Furnace Making a Whistling Noise
When you’re noticing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent is loose. If you’ve checked your vents but are still hearing whistling, Northern Comfort Inc can assist you. It’s important to get loose ductwork fixed without delay, since it can make comfort problems in your house and increase your gas expenses.
6. Furnace Making a Grinding Noise
It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal noise often means there’s a problem with your furnace’s blower. Switch off your furnace off instantly and reach our professionals at 507-387-6596 for assistance.
When you’re hearing a strange noise from your furnace, Northern Comfort Inc is here to provide assistance. Contact us at 507-387-6596 to schedule your furnace repair appointment right away.