When your furnace is running properly, it should deliver warm air without generating too much noise. While it’s common to notice your furnace making noise as it begins running, other noises are indicating your furnace requires immediate professional support.
Here are some of the most frequent furnace noises and what they can mean. If your furnace is making an odd noise, our friendly heating pros are here to help with the best furnace repair in Manassas, Virginia.
1. Furnace Making a Banging Noise
You could have a critical situation on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a few problems. These involve gas increasing in your furnace or a ductwork problem.
Banging Sounds Coming from Your Furnace
Your heating system turns grimy over time, so that’s why it’s critical to set annual furnace maintenance with Fire & Ice HVAC. One of the jobs our technicians complete during this service is clean your furnace’s burners. When this part gets grubby, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The resulting gas buildup may crack your furnace’s heat exchanger, where natural gas changes into heat. Any fractures in it can emit carbon monoxide, which is normally emitted outside. This hazardous gas can be lethal in large concentrations.
If you’re hearing banging or knocking sounds coming from your furnace, Fire & Ice HVAC advises turning it off and contacting us at 703-595-4157. Excessive natural gas in your furnace or a cracked heat exchanger are critical troubles that necessitate immediate repairs.
Banging Sounds Coming from Your Ductwork
Your furnace relies on ductwork to move heated air throughout your home. If the ductwork wasn’t put in correctly or is getting dated, it can make a lot of noise when your furnace is heating. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with Fire & Ice HVAC at 703-595-4157 and we’ll determine the problem.
2. Furnace Making a Buzzing Noise
If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically indicates an electrical problem, like with its transformer, blower motor or capacitor.
Your furnace relies on an internal transformer to run on the right voltage. If wires or the box is loose, you may detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes hot or cold air throughout your rooms, and a capacitor, which triggers the motor. If either of these parts are fading, they will buzz when the furnace switches on.
3. Furnace Making a Rattling Noise
If your furnace is making a rattling noise, it could be due to something small, like an unfastened screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and getting in touch with our heating pros at 703-595-4157 for support.
4. Furnace Is Making a High-Pitched Squealing Sound
If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to get your attention it requires some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be greased. We are aware that maintenance sometimes slips your mind, but our technicians can get your furnace operating quietly again quickly.
5. Furnace Makes a Whistling Sound Like Air Escaping
When you’re noticing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You may also hear whistling while the furnace is operating if a floor vent isn’t secure. If you’ve checked your vents but are still sensing sound, Fire & Ice HVAC can assist you. It’s essential to get loose ductwork taken care of quickly, as it can result in comfort issues in your residence and increase your utility bills.
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 sound usually means there’s an issue with your furnace’s blower. Turn off your furnace off immediately and contact our professionals at 703-595-4157 for assistance.
When you’re noticing a weird noise from your furnace, Fire & Ice HVAC is available to support you. Contact us at 703-595-4157 to book your furnace repair appointment right away.