When your furnace is working correctly, it should give heat without creating too much noise. While it’s common to catch your furnace making noise as it starts up, other sounds are signaling your furnace should get immediate professional support.
Here are some of the most frequent furnace noises and what they might mean. If your furnace is making a weird noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Phoenix, AZ.
1. Furnace Making a Banging Noise
You might have an urgent situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a few problems. These include gas accumulating in your furnace or a ductwork issue.
Banging Sounds Coming from Your Furnace
Your heating system gets grimy as time passes, so that’s why it’s important to book annual furnace maintenance with Dial One Mears Air Conditioning & Heating Inc. One of the things our technicians do during this appointment is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise if ignition takes more time. The ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can discharge carbon monoxide, which is normally emitted outside. This dangerous gas can be fatal in large concentrations.
If you’re hearing banging or knocking sounds coming from your furnace, Dial One Mears Air Conditioning & Heating Inc recommends turning it off and calling us at 602-832-7808. Too much natural gas in your furnace or a fractured heat exchanger are hazardous troubles that should get immediate repairs.
Banging Sounds Coming from Your Ductwork
Your furnace uses ductwork to move warm air throughout your home. If the ductwork wasn’t put in correctly or is aging, it can make a lot of noise when your furnace is on. This may be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Dial One Mears Air Conditioning & Heating Inc at 602-832-7808 and we’ll pinpoint the problem.
2. Furnace Making a Buzzing Noise
If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically indicates an electrical situation, 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 is loose, you may detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves hot or cooled air across your rooms, and a capacitor, which starts the motor. If either of these components are failing, 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 the result of something small, like an unfastened screw, or something serious, like a broken part. In either case, we advise shutting your furnace off and calling our heating pros at 602-832-7808 for help.
4. Furnace Making a Squealing Noise
If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to alert you it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be greased. We are aware that maintenance often slips your mind, but our techs can get your furnace running quietly again fast.
5. Furnace Making a Whistling Noise
When you’re noticing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You may also be aware of whistling while the furnace is operating if a floor vent isn’t secure. If you’ve looked at your vents but are still noticing sound, Dial One Mears Air Conditioning & Heating Inc can provide support. It’s critical to get loose ductwork fixed without delay, because it can make comfort problems in your residence and drive up your gas expenses.
6. Furnace Making a Grinding Noise
It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal noise often means there’s an issue with your furnace’s blower. Shut down your furnace off immediately and reach us at 602-832-7808 for support.
When you’re noticing a weird noise from your furnace, Dial One Mears Air Conditioning & Heating Inc is ready to provide assistance. Contact us at 602-832-7808 to request your furnace repair appointment right away.