When your furnace is operating properly, it should deliver heat without generating too much sound. While it’s common to catch your furnace making noise as it starts up, other noises are signaling your furnace should get immediate professional assistance.
Here are some of the most frequent furnace noises and what they can be indicating. If your furnace is making a weird noise, our friendly heating pros are here to help with the best furnace repair in Lincoln, Nebraska.
1. Furnace Makes a Banging Sound
You could have a critical situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be several problems. These include gas accumulating in your furnace or a ductwork issue.
Banging Sounds Coming from Your Furnace
Your heating system gets filthy over the years, so that’s why it’s important to set routine furnace maintenance with AW Heating & Air Conditioning. One of the jobs our pros perform during this work is clean your furnace’s burners. When this part gets grimy, you might hear your furnace making a loud rumbling noise after ignition takes more time. The resulting gas buildup might break your furnace’s heat exchanger, where natural gas transforms into warmth. Any breaks in it can discharge carbon monoxide, which is normally vented outdoors. This dangerous gas can be deadly in large concentrations.
If you’re noticing banging or knocking sounds coming from your furnace, AW Heating & Air Conditioning recommends turning it off and contacting us at 402-438-7992. Excessive natural gas in your furnace or a fractured heat exchanger are dangerous issues that necessitate immediate service.
Banging Sounds Coming from Your Ductwork
Your furnace works with ductwork to deliver hot air around your residence. If the ductwork wasn’t designed correctly or is aging, it can be loud 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 AW Heating & Air Conditioning at 402-438-7992 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 frequently means there’s an electrical issue, 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 isn’t tight enough, you may hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes warm or cold air across your rooms, and a capacitor, which starts 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 minor, like an unsecure screw, or something major, like a broken part. In either case, we advise shutting your furnace off and contacting our heating specialists at 402-438-7992 for assistance.
4. Furnace Is Making a High-Pitched Squealing Sound
If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to tell you it requires some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing could need to be greased. We know that maintenance often slips your mind, but our professionals can get your furnace heating quietly again rapidly.
5. Furnace Making a Whistling Noise
When you’re noticing your furnace making a whistling noise, it’s frequently the result of 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 sound, AW Heating & Air Conditioning can help. It’s essential to get loose ductwork repaired without delay, as it can result in comfort issues in your residence and increase your heating expenses.
6. Furnace Making a Grinding Noise
It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal racket typically means there’s trouble with your furnace’s blower. Shut down your furnace off immediately and call our professionals at 402-438-7992 for help.
When you’re hearing a weird noise from your furnace, AW Heating & Air Conditioning is ready to provide assistance. Contact us at 402-438-7992 to request your furnace repair appointment today.
