When your furnace is operating like it should, it should deliver warm air without making too much sound. While it’s normal to notice your furnace making noise as it begins running, other disruptions are showing your furnace needs immediate professional help.

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

1. Furnace Makes Banging or Knocking Sounds

You may have an urgent issue 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 a couple of problems. These range from 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 book routine furnace maintenance with Pepper AC & Heat. One of the tasks our professionals complete during this work is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise if ignition takes more time. The following gas buildup can break your furnace’s heat exchanger, where natural gas changes into warmth. Any breaks in it can discharge carbon monoxide, which is normally released outside. This hazardous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Pepper AC & Heat urges you to turn it off and calling us at 940-202-1184. Too much natural gas in your furnace or a broken heat exchanger are serious issues that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air around your home. If the ductwork wasn’t put in correctly or is getting old, it can make a lot of noise when your furnace is on. This can be the problem if your furnace makes a banging noise when it shuts off. Contact Pepper AC & Heat at 940-202-1184 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound typically indicates an electrical problem, 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 notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves heated or cooled air around your residence, and a capacitor, which starts the motor. If either of these components are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it may be due to something little, like an unfastened screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and contacting our heating specialists at 940-202-1184 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to alert you it needs some TLC. If you’ve skipped furnace maintenance recently, belts could be worn out or a bearing may need to be lubed. We know that maintenance sometimes slips your mind, but our professionals can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You might also notice whistling while the furnace is running if a floor vent is loose. If you’ve looked at your vents but are still noticing noise, Pepper AC & Heat can assist you. It’s important to get loose ductwork taken care of without delay, as it can create comfort troubles in your home and inflate your heating bills.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal racket often means there’s trouble with your furnace’s blower. Turn off your furnace off right away and contact us at 940-202-1184 for support.

When you’re noticing a strange noise from your furnace, Pepper AC & Heat is here to provide assistance. Contact us at 940-202-1184 to request your furnace repair appointment today.