When your furnace is running properly, it should give warmth without making too much sound. While it’s expected to catch your furnace making noise as it begins running, other noises are signaling your furnace should get immediate professional help.

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

1. Furnace Makes Banging or Knocking Sounds

You might have an urgent problem on your hands if you’re noticing 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 building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s essential to schedule seasonal furnace maintenance with House of Heating Incorporated. One of the jobs our techs complete during this service is clean your furnace’s burners. When this component gets grimy, you might hear your furnace making a loud rumbling noise when ignition is delayed. The resulting gas buildup might fracture your furnace’s heat exchanger, where natural gas turns into warm air. Any fractures in it can emit carbon monoxide, which is regularly vented away from your home. This toxic 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. Significant natural gas in your furnace or a cracked heat exchanger are hazardous troubles that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide hot air throughout your residence. If the ductwork wasn’t designed properly or is getting old, it can make a lot of noise when your furnace is on. This can be the issue if your furnace makes a banging noise when it shuts off. Contact House of Heating Incorporated at 715-384-3163 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to operate on the right 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 sends heated or cold air around your rooms, and a capacitor, which turns on the motor. If either of these parts 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 could be due to something minor, like a loose screw, or something major, like a broken part. In either case, we urge you to shut your furnace off and getting in touch with our heating specialists at 715-384-3163 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to alert you it could use 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 lubricated. We realize that maintenance frequently slips your mind, but our professionals can get your furnace running quietly again rapidly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You might also notice whistling while the furnace is on if a floor vent isn’t secure. If you’ve checked your vents but are still noticing sound, House of Heating Incorporated can assist you. It’s critical to get loose ductwork repaired fast, since it can create comfort issues in your house and drive up your heating costs.

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 noise usually means there’s trouble with your furnace’s blower. Turn off your furnace off instantly and contact our professionals at 715-384-3163 for assistance.

When you’re noticing an atypical noise from your furnace, House of Heating Incorporated is ready to support you. Contact us at 715-384-3163 to schedule your furnace repair appointment now.