When your furnace is operating like it should, it should deliver heat without creating too much sound. While it’s normal to catch your furnace making noise as it begins running, other sounds are showing your furnace should get immediate professional assistance.

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

1. Furnace Makes Banging or Knocking Sounds

You may have a serious problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a couple of problems. These include gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over time, so that’s why it’s essential to book seasonal furnace maintenance with Pepper AC & Heat. One of the things our professionals perform during this work is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The subsequent gas buildup can crack your furnace’s heat exchanger, where natural gas transforms into heat. Any cracks in it can discharge carbon monoxide, which is normally emitted outdoors. This hazardous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Pepper AC & Heat advises turning it off and reaching us at 940-202-1184. Excessive natural gas in your furnace or a broken heat exchanger are dangerous troubles that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide hot air throughout your residence. If the ductwork wasn’t designed properly or is getting old, it can be noisy when your furnace runs. This may be the case if your furnace makes a banging noise when it shuts off. Get in touch with Pepper AC & Heat at 940-202-1184 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically is telling you there’s 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 needs to be tightened, you could detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or cold air throughout your rooms, and a capacitor, which turns on the motor. If either of these parts are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be related to something minor, like an unsecure screw, or something major, like a broken component. In either case, we recommend shutting off your furnace and calling our heating professionals at 940-202-1184 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to alert you it requires some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be lubed. We realize that maintenance frequently slips your mind, but our pros can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You could also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve checked your vents but are still sensing noise, Pepper AC & Heat can help. It’s important to get loose ductwork repaired quickly, because it can create comfort issues in your home and increase your utility expenses.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound usually means there’s an issue with your furnace’s blower. Switch off your furnace off right away and reach our professionals at 940-202-1184 for assistance.

When you’re hearing an uncommon noise from your furnace, Pepper AC & Heat is ready to provide assistance. Contact us at 940-202-1184 to book your furnace repair appointment now.