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

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making an atypical noise, our friendly heating specialists are here to assist with the best furnace repair in Corpus Christi, Texas.

1. Furnace Making a Banging Noise

You may have a critical problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a few problems. These range from gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty over the years, so that’s why it’s important to set annual furnace maintenance with Total Assurance AC & Heating. One of the jobs our techs complete during this appointment is clean your furnace’s burners. When this component gets dirty, you may hear your furnace making a loud rumbling noise after ignition takes more time. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can emit carbon monoxide, which is ordinarily released outside. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Total Assurance AC & Heating recommends turning it off and calling us at 361-446-6925. Significant natural gas in your furnace or a ruptured heat exchanger are hazardous troubles that require fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide heated air across your residence. If the ductwork wasn’t designed properly or is getting dated, it can make a lot of noise when your furnace is on. This can be the issue if your furnace makes a banging noise when it shuts off. Call Total Assurance AC & Heating at 361-446-6925 and we’ll figure out 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 is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the proper voltage. If wires or the box is loose, you may detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends warm or cooled air across your home, and a capacitor, which triggers the motor. If either of these components are going out, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be related to something little, like an unfastened screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and calling our heating pros at 361-446-6925 for support.

4. Furnace Is Making a High-Pitched Squealing Sound

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 down or a bearing might need to be lubed. We know that maintenance sometimes slips your mind, but our pros can get your furnace operating quietly again rapidly.

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 could also be aware of whistling while the furnace is running if a floor vent isn’t tight. If you’ve examined your vents but are still hearing whistling, Total Assurance AC & Heating can provide support. It’s important to get loose ductwork fixed without delay, because it can create comfort issues in your home and inflate your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you hear 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 immediately and call us at 361-446-6925 for support.

When you’re getting a weird noise from your furnace, Total Assurance AC & Heating is here to support you. Contact us at 361-446-6925 to schedule your furnace repair appointment now.