When your furnace is working properly, it should deliver warm air without making too much sound. While it’s common to notice your furnace making noise as it begins running, other sounds are signaling your furnace should get immediate professional help.
Here are some of the most frequent furnace noises and what they can mean. If your furnace is making an atypical noise, our friendly heating professionals are here to assist with the best furnace repair in Monroe, Wisconsin.
1. Furnace Makes a Banging Sound
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 may mean there could be several problems. These include gas accumulating in your furnace or a ductwork problem.
Banging Sounds Coming from Your Furnace
Your heating system becomes filthy over time, so that’s why it’s important to set yearly furnace maintenance with Lanz Furnace and Fireplace. One of the jobs our technicians perform during this service is clean your furnace’s burners. When this piece gets dirty, you might hear your furnace making a loud rumbling noise if ignition takes longer than normal. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas turns into heat. Any fractures in it can leak carbon monoxide, which is ordinarily vented away from your home. This hazardous gas can be fatal in large concentrations.
If you’re hearing banging or knocking sounds coming from your furnace, Lanz Furnace and Fireplace advises turning it off and calling us at 608-291-3606. Excessive natural gas in your furnace or a cracked heat exchanger are serious issues that necessitate immediate repairs.
Banging Sounds Coming from Your Ductwork
Your furnace relies on ductwork to deliver warm air across your residence. If the ductwork wasn’t put in correctly or is getting dated, it can be loud when your furnace is on. This might be the problem if your furnace makes a banging noise when it shuts off. Call Lanz Furnace and Fireplace at 608-291-3606 and we’ll pinpoint the problem.
2. Furnace Buzzes Constantly
If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.
Your furnace depends on an internal transformer to work on the proper voltage. If wires or the box isn’t tight enough, you could hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves hot or cold air around your house, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace switches on.
3. Furnace Rattles
If your furnace is making a rattling noise, it may be related to something little, like a loose screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and contacting our heating professionals at 608-291-3606 for help.
4. Furnace Is Making a High-Pitched Squealing Sound
If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to get your attention it requires some TLC. If you’ve skipped furnace maintenance recently, belts could be worn out or a bearing could need to be greased. We know that maintenance sometimes slips your mind, but our pros 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 working if a floor vent is loose. If you’ve examined your vents but are still sensing noise, Lanz Furnace and Fireplace can help. It’s important to get loose ductwork repaired quickly, as it can make comfort problems in your residence and increase your gas bills.
6. Furnace Making a Grinding Noise
It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal sound typically means there’s an issue with your furnace’s blower. Turn off your furnace off right away and reach our professionals at 608-291-3606 for support.
When you’re getting a weird noise from your furnace, Lanz Furnace and Fireplace is available to help. Contact us at 608-291-3606 to schedule your furnace repair appointment right away.
