When your furnace is working correctly, it should provide warm air without generating too much sound. While it’s expected to notice your furnace making noise as it turns on, other sounds are showing your furnace requires immediate professional help.

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making a weird noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Highlands Ranch, Colorado.

1. Furnace Makes a Banging Sound

You could have a critical problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might signal there could be several problems. These include gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over time, so that’s why it’s essential to set yearly furnace maintenance with PS Cool Heat. One of the tasks our pros perform during this service is clean your furnace’s burners. When this component gets grimy, you might hear your furnace making a loud rumbling noise when ignition takes more time. The subsequent gas buildup may break your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can emit carbon monoxide, which is normally emitted away from your home. This hazardous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, PS Cool Heat recommends turning it off and contacting us at 720-613-2210. Too much natural gas in your furnace or a fractured heat exchanger are dangerous problems that require fast service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide warm air throughout your home. If the ductwork wasn’t put in properly or is aging, it can be noisy 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 PS Cool Heat at 720-613-2210 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound frequently means there’s 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 is loose, you could detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes warm or cold air across your residence, and a capacitor, which turns on the motor. If either of these pieces are failing, 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 may be the result of something minor, like an unsecure screw, or something serious, like a broken part. In either case, we advise shutting your furnace off and calling our heating pros at 720-613-2210 for support.

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 trying to get your attention it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing may need to be lubricated. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You could also hear whistling while the furnace is operating if a floor vent isn’t tight. If you’ve examined your vents but are still hearing whistling, PS Cool Heat can provide support. It’s important to get loose ductwork taken care of quickly, since it can result in comfort troubles in your home and drive up your energy 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 noise usually means there’s an issue with your furnace’s blower. Switch off your furnace off promptly and reach our professionals at 720-613-2210 for help.

When you’re getting a strange noise from your furnace, PS Cool Heat is ready to provide assistance. Contact us at 720-613-2210 to schedule your furnace repair appointment right away.