When your furnace is working properly, it should give warm air without generating too much disruption. While it’s expected to notice your furnace making noise as it turns on, other sounds are indicating your furnace needs immediate professional support.

Here are some of the most common furnace noises and what they can be signaling. If your furnace is making an atypical noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Alice, Texas.

1. Furnace Makes a Banging Sound

You could have a critical problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a few problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over time, so that’s why it’s important to schedule yearly furnace maintenance with Rescue Heating & Air. One of the jobs our professionals do during this service is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise if ignition is delayed. The ensuing gas buildup can break your furnace’s heat exchanger, where natural gas changes into heat. Any cracks in it can discharge carbon monoxide, which is normally vented outdoors. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Rescue Heating & Air recommends turning it off and reaching us at 361-265-4371. Excessive natural gas in your furnace or a ruptured heat exchanger are critical troubles that require immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver warm air throughout your home. If the ductwork wasn’t installed properly or is aging, it can make a lot of noise when your furnace is on. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with Rescue Heating & Air at 361-265-4371 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound usually means there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to operate on the right voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cold air throughout your space, and a capacitor, which starts the motor. If either of these parts are fading, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be due to something small, like a loose screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating pros at 361-265-4371 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to tell you it could use some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn down or a bearing could need to be greased. We realize that maintenance frequently slips your mind, but our professionals can get your furnace operating quietly again rapidly.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You might also be aware of whistling while the furnace is working if a floor vent is loose. If you’ve looked at your vents but are still noticing sound, Rescue Heating & Air can assist you. It’s important to get loose ductwork taken care of without delay, because it can make comfort troubles in your house and increase your energy expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good 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. Switch off your furnace off now and reach us at 361-265-4371 for support.

When you’re noticing an uncommon noise from your furnace, Rescue Heating & Air is ready to help. Contact us at 361-265-4371 to schedule your furnace repair appointment right away.