When your furnace is operating correctly, it should give heat without making too much disruption. While it’s expected to notice your furnace making noise as it begins running, other noises are indicating your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they might be indicating. If your furnace is making an odd noise, our friendly heating specialists are here to help with the best furnace repair in Manassas, Virginia.

1. Furnace Making a Banging Noise

You could have an urgent problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a couple of problems. These involve gas building up 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 important to book annual furnace maintenance with Fire & Ice HVAC. One of the jobs our pros perform during this appointment is clean your furnace’s burners. When this component gets grubby, you might hear your furnace making a loud rumbling noise after ignition takes more time. The following gas buildup may break your furnace’s heat exchanger, where natural gas turns into warm air. Any fractures in it can emit carbon monoxide, which is normally released outdoors. This toxic gas can be fatal 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. Significant natural gas in your furnace or a ruptured heat exchanger are critical issues that require immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide warm air throughout your house. If the ductwork wasn’t installed properly or is getting dated, it can make a lot of noise when your furnace runs. This may be the problem if your furnace makes a banging noise when it shuts off. Call Fire & Ice HVAC at 703-595-4157 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound usually indicates an electrical problem, 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 isn’t tight enough, you could notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves warm or cooled air throughout your house, and a capacitor, which starts the motor. If either of these pieces are failing, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be due to something little, like an unsecure screw, or something serious, like a broken part. In either case, we urge you to shut your furnace off and getting in touch with our heating specialists at 703-595-4157 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to tell you it requires some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing may need to be greased. We know that maintenance frequently slips your mind, but our professionals can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You could also be aware of whistling while the furnace is running if a floor vent isn’t tight. If you’ve checked your vents but are still hearing sound, Fire & Ice HVAC can assist you. It’s important to get loose ductwork taken care of quickly, as it can result in comfort problems in your house and drive up your heating expenses.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal sound frequently means there’s a problem with your furnace’s blower. Turn off your furnace off instantly and reach us at 703-595-4157 for help.

When you’re hearing a strange noise from your furnace, Fire & Ice HVAC is available to support you. Contact us at 703-595-4157 to request your furnace repair appointment right away.