When your furnace is running correctly, it should deliver heat without creating too much disruption. While it’s normal to hear your furnace making noise as it begins running, other disruptions are indicating your furnace needs immediate professional help.

Here are some of the most common furnace noises and what they can be signaling. If your furnace is making a strange noise, our friendly heating professionals are here to assist with the best furnace repair in Pflugerville, Texas.

1. Furnace Making a Banging Noise

You might 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 signal there could be a couple of problems. These include gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy over the years, so that’s why it’s important to schedule annual furnace maintenance with Evenaire Heating & Air Conditioning. One of the jobs our professionals do during this appointment is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise after ignition is delayed. The resulting gas buildup might fracture your furnace’s heat exchanger, where natural gas transforms into warmth. Any fractures in it can discharge carbon monoxide, which is regularly vented away from your home. This toxic gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Evenaire Heating & Air Conditioning recommends turning it off and contacting us at 512-355-1482. Too much natural gas in your furnace or a ruptured heat exchanger are serious issues that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide warm air throughout your residence. If the ductwork wasn’t designed properly or is getting dated, it can be noisy when your furnace is heating. This could be the case if your furnace makes a banging noise when it shuts off. Call Evenaire Heating & Air Conditioning at 512-355-1482 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound frequently means there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run on the correct voltage. If wires or the box isn’t tight enough, you might hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves hot or chilly air around your residence, and a capacitor, which turns on the motor. If either of these pieces are going out, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be the result of something minor, like a loose screw, or something critical, like a broken component. In either case, we urge you to shut your furnace off and calling our heating professionals at 512-355-1482 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to alert you it needs some TLC. If you’ve neglected furnace maintenance recently, belts could be worn down or a bearing might need to be lubed. We are aware that maintenance often slips your mind, but our professionals can get your furnace heating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You might also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve examined your vents but are still hearing noise, Evenaire Heating & Air Conditioning can help. It’s critical to get loose ductwork repaired without delay, as it can make comfort problems in your home and drive up your utility expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal noise usually means there’s a problem with your furnace’s blower. Switch off your furnace off promptly and reach us at 512-355-1482 for help.

When you’re noticing an uncommon noise from your furnace, Evenaire Heating & Air Conditioning is available to provide assistance. Contact us at 512-355-1482 to schedule your furnace repair appointment right away.