When your furnace is running correctly, it should give heat without generating too much sound. While it’s common to notice your furnace making noise as it starts up, other sounds are showing your furnace should get immediate professional assistance.

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

1. Furnace Makes a Banging Sound

You might have an urgent issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a couple of problems. These involve gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy as time passes, so that’s why it’s critical to book seasonal furnace maintenance with Diedrick's Heating and Air Conditioning. One of the jobs our professionals do during this service is clean your furnace’s burners. When this piece gets grubby, you might hear your furnace making a loud rumbling noise if ignition is delayed. The subsequent gas buildup can fracture your furnace’s heat exchanger, where natural gas changes into heat. Any breaks in it can leak carbon monoxide, which is normally emitted outside. This toxic gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Diedrick's Heating and Air Conditioning advises turning it off and reaching us at 920-833-7967. Excessive natural gas in your furnace or a fractured heat exchanger are dangerous troubles that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver warm air across your house. If the ductwork wasn’t designed right or is getting old, it can be noisy when your furnace is on. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Diedrick's Heating and Air Conditioning at 920-833-7967 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to operate on the correct voltage. If wires or the box is loose, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cold air around your residence, and a capacitor, which starts the motor. If either of these components are fading, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be related to something small, like an unfastened screw, or something major, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 920-833-7967 for assistance.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to tell you it needs some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing could need to be lubricated. We realize that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again fast.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You could also notice whistling while the furnace is working if a floor vent is loose. If you’ve checked your vents but are still noticing sound, Diedrick's Heating and Air Conditioning can provide support. It’s critical to get loose ductwork taken care of fast, since it can result in comfort troubles in your home and drive up your energy costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal racket frequently means there’s a problem with your furnace’s blower. Shut down your furnace off now and call our pros at 920-833-7967 for assistance.

When you’re hearing a strange noise from your furnace, Diedrick's Heating and Air Conditioning is available to provide assistance. Contact us at 920-833-7967 to book your furnace repair appointment now.