When your furnace is operating properly, it should give warm air without making too much noise. While it’s common to notice your furnace making noise as it turns on, other sounds are showing your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they might mean. If your furnace is making a weird noise, our friendly heating specialists are here to assist with the best furnace repair in Big Spring, Texas.

1. Furnace Makes a Banging Sound

You could 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 can mean there could be a couple of problems. These include gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty over time, so that’s why it’s critical to set annual furnace maintenance with SKC AC LLC. One of the things our techs do during this appointment is clean your furnace’s burners. When this component gets grubby, you might hear your furnace making a loud rumbling noise if ignition is delayed. The subsequent gas buildup can break your furnace’s heat exchanger, where natural gas changes into warmth. Any fractures in it can discharge carbon monoxide, which is normally released away from your home. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, SKC AC LLC advises turning it off and calling us at 432-203-4881. Significant natural gas in your furnace or a cracked heat exchanger are dangerous troubles that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air throughout your home. If the ductwork wasn’t designed properly or is getting old, it can be loud when your furnace runs. This may be the problem if your furnace makes a banging noise when it shuts off. Contact SKC AC LLC at 432-203-4881 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 usually means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you may notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or cold air across your rooms, and a capacitor, which triggers the motor. If either of these pieces are going out, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be due to something small, like an unfastened screw, or something critical, like a broken part. In either case, we urge you to shut your furnace off and getting in touch with our heating pros at 432-203-4881 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to tell you it could use 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 lubricated. We realize that maintenance frequently slips your mind, but our pros can get your furnace heating quietly again quickly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You may also notice whistling while the furnace is on if a floor vent isn’t tight. If you’ve checked your vents but are still noticing noise, SKC AC LLC can assist you. It’s critical to get loose ductwork fixed quickly, because it can make comfort issues in your home and drive up your heating expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise frequently means there’s a problem with your furnace’s blower. Turn off your furnace off right away and call us at 432-203-4881 for help.

When you’re getting a weird noise from your furnace, SKC AC LLC is ready to support you. Contact us at 432-203-4881 to schedule your furnace repair appointment right away.