When your furnace is running correctly, it should give heat without making too much disruption. While it’s common to catch your furnace making noise as it turns on, other disruptions are indicating your furnace should get immediate professional support.

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 fix the problem with the best furnace repair in Georgetown, Texas.

1. Furnace Making a Banging Noise

You could have an urgent situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a few problems. These range from gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s critical to book yearly furnace maintenance with Miller Climate Control LLC. One of the tasks our professionals do during this service is clean your furnace’s burners. When this piece gets grimy, you may hear your furnace making a loud rumbling noise after ignition takes longer than normal. The subsequent gas buildup may break your furnace’s heat exchanger, where natural gas changes into heat. Any cracks in it can leak carbon monoxide, which is regularly released outdoors. This toxic gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Miller Climate Control LLC recommends turning it off and contacting us at 512-937-2001. Significant natural gas in your furnace or a cracked heat exchanger are serious issues that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air around your residence. If the ductwork wasn’t designed correctly or is getting dated, it can be loud when your furnace is heating. This can be the issue if your furnace makes a banging noise when it shuts off. Call Miller Climate Control LLC at 512-937-2001 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically indicates an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to work on the right voltage. If wires or the box is loose, you could detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends heated or chilly air across your rooms, and a capacitor, which turns on the motor. If either of these parts are failing, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be related to something little, like an unsecure screw, or something critical, like a broken piece. In either case, we urge you to shut your furnace off and calling our heating professionals at 512-937-2001 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to alert you it requires some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing might need to be greased. We know that maintenance sometimes slips your mind, but our technicians can get your furnace running quietly again fast.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You may also hear whistling while the furnace is on if a floor vent is loose. If you’ve checked your vents but are still hearing whistling, Miller Climate Control LLC can provide support. It’s important to get loose ductwork fixed quickly, because it can result in comfort issues in your residence and increase your gas costs.

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 sound often means there’s an issue with your furnace’s blower. Turn off your furnace off now and call us at 512-937-2001 for assistance.

When you’re noticing an uncommon noise from your furnace, Miller Climate Control LLC is ready to help. Contact us at 512-937-2001 to schedule your furnace repair appointment right away.