When your furnace is working like it should, it should deliver warmth without making too much sound. While it’s common to catch your furnace making noise as it turns on, other sounds are indicating your furnace requires immediate professional help.

Here are some of the most common furnace noises and what they could be indicating. If your furnace is making a strange noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Front Royal, Virginia.

1. Furnace Makes a Banging Sound

You might have a serious situation 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 few problems. These include gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over the years, so that’s why it’s important to book seasonal furnace maintenance with Dave's Diversified Services. One of the things our professionals do during this service is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise when ignition is delayed. The ensuing gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into heat. Any breaks in it can emit carbon monoxide, which is normally vented away from your home. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Dave's Diversified Services recommends turning it off and reaching us at 540-636-3396. Significant natural gas in your furnace or a broken heat exchanger are hazardous issues that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air around your house. If the ductwork wasn’t designed correctly or is getting old, it can be noisy when your furnace runs. This could be the problem if your furnace makes a banging noise when it shuts off. Call Dave's Diversified Services at 540-636-3396 and we’ll determine the problem.

2. Furnace Buzzes Constantly

If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically means there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the proper voltage. If wires or the box is loose, you could detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or chilly air throughout your residence, and a capacitor, which starts the motor. If either of these components are going out, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be related to something small, like an unsecure screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and calling our heating specialists at 540-636-3396 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 get your attention 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 lubed. We realize that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again fast.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing noise, Dave's Diversified Services can assist you. It’s important to get loose ductwork repaired quickly, since it can result in comfort troubles in your home and drive up your gas costs.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound often means there’s an issue with your furnace’s blower. Switch off your furnace off instantly and call us at 540-636-3396 for help.

When you’re hearing a weird noise from your furnace, Dave's Diversified Services is here to support you. Contact us at 540-636-3396 to book your furnace repair appointment right away.