When your furnace is operating correctly, it should provide warmth without creating too much sound. While it’s normal to notice your furnace making noise as it starts up, other sounds are showing your furnace needs immediate professional help.
Here are some of the most reported furnace noises and what they could be indicating. If your furnace is making an odd noise, our friendly heating professionals are here to help with the best furnace repair in Frederick, Maryland.
1. Furnace Making a Banging Noise
You may 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 mean there could be a couple of problems. These range from gas accumulating in your furnace or a ductwork problem.
Banging Sounds Coming from Your Furnace
Your heating system turns filthy over the years, so that’s why it’s important to set annual furnace maintenance with May's Heating & Air. One of the things our technicians perform during this appointment is clean your furnace’s burners. When this component gets dirty, you could 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 changes into warmth. Any cracks in it can leak carbon monoxide, which is ordinarily released away from your home. This toxic gas can be fatal in large concentrations.
If you’re hearing banging or knocking sounds coming from your furnace, May's Heating & Air advises turning it off and calling us at 301-690-0397. Significant natural gas in your furnace or a ruptured heat exchanger are serious issues that require prompt service.
Banging Sounds Coming from Your Ductwork
Your furnace uses ductwork to provide heated air across your home. If the ductwork wasn’t installed properly or is getting old, it can be loud when your furnace is heating. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with May's Heating & Air at 301-690-0397 and we’ll pinpoint the problem.
2. Furnace Buzzes Constantly
If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently indicates an electrical issue, 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 might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or cooled air around your home, and a capacitor, which starts the motor. If either of these pieces are going out, they will buzz when the furnace starts.
3. Furnace Rattles
If your furnace is making a rattling noise, it may be the result of something little, like an unsecure screw, or something major, like a broken piece. In either case, we advise shutting your furnace off and calling our heating specialists at 301-690-0397 for help.
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 attempting to tell you it could use some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing may need to be greased. We know that maintenance sometimes slips your mind, but our techs can get your furnace operating quietly again fast.
5. Furnace Whistles
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 hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve examined your vents but are still noticing whistling, May's Heating & Air can assist you. It’s essential to get loose ductwork taken care of without delay, as it can result in comfort troubles in your residence and increase your energy costs.
6. Furnace Makes Noise that Sounds Like Scraping Metal
It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal noise frequently means there’s trouble with your furnace’s blower. Turn off your furnace off promptly and contact our pros at 301-690-0397 for help.
When you’re getting an uncommon noise from your furnace, May's Heating & Air is available to provide assistance. Contact us at 301-690-0397 to book your furnace repair appointment today.