When your furnace is running correctly, it should give warm air without generating too much sound. While it’s common to notice your furnace making noise as it starts up, other noises are indicating your furnace requires immediate professional help.
Here are some of the most frequent furnace noises and what they could mean. If your furnace is making a weird noise, our friendly heating professionals are here to assist with the best furnace repair in Brookfield, Connecticut.
1. Furnace Makes a Banging Sound
You could have a serious issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a couple of problems. These include gas accumulating in your furnace or a ductwork problem.
Banging Sounds Coming from Your Furnace
Your heating system becomes grimy as time passes, so that’s why it’s critical to schedule annual furnace maintenance with Central Air LLC. One of the tasks our pros do during this service is clean your furnace’s burners. When this component gets dirty, you may hear your furnace making a loud rumbling noise when ignition takes longer than normal. The following gas buildup can break your furnace’s heat exchanger, where natural gas turns into heat. Any fractures in it can discharge 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, Central Air LLC recommends turning it off and contacting us at 203-357-5913. Too much natural gas in your furnace or a ruptured heat exchanger are critical troubles that necessitate immediate attention.
Banging Sounds Coming from Your Ductwork
Your furnace works with ductwork to move heated air across your house. If the ductwork wasn’t put in properly or is getting dated, it can be noisy when your furnace runs. This could be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Central Air LLC at 203-357-5913 and we’ll determine the problem.
2. Furnace Makes a Buzzing Sound
If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound frequently indicates an electrical problem, like with its transformer, blower motor or capacitor.
Your furnace depends on an internal transformer to work on the right voltage. If wires or the box needs to be tightened, you may detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves heated or cold air throughout your residence, and a capacitor, which turns on the motor. If either of these components are going out, they will buzz when the furnace turns on.
3. Furnace Making a Rattling Noise
If your furnace is making a rattling noise, it could be related to something minor, like an unfastened screw, or something major, like a broken piece. In either case, we recommend shutting off your furnace and contacting our heating pros at 203-357-5913 for support.
4. Furnace Squeals
If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to tell you it could use 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 realize that maintenance often slips your mind, but our techs can get your furnace operating quietly again quickly.
5. Furnace Whistles
When you’re detecting your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You could also be aware of whistling while the furnace is working if a floor vent isn’t tight. If you’ve examined your vents but are still hearing noise, Central Air LLC can assist you. It’s critical to get loose ductwork repaired fast, because it can create comfort issues in your home and drive up your utility bills.
6. Furnace Makes a Loud, Unpleasant Grinding Noise
It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal noise often means there’s trouble with your furnace’s blower. Switch off your furnace off now and call our pros at 203-357-5913 for help.
When you’re getting a weird noise from your furnace, Central Air LLC is available to provide assistance. Contact us at 203-357-5913 to request your furnace repair appointment now.