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Banging, Screeching and Rattling: What 6 Common Furnace Noises Indicate

When your furnace is running like it should, it should deliver warmth without creating too much sound. While it’s expected to hear your furnace making noise as it begins running, other disruptions are indicating your furnace requires immediate professional support.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Robstown.

1. Furnace Making a Banging Noise

You could have a serious situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a couple of 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 as time passes, so that’s why it’s critical to schedule seasonal furnace maintenance with McNatt Inc. One of the jobs our technicians complete during this work is clean your furnace’s burners. When this part gets grubby, you might hear your furnace making a loud rumbling noise when ignition takes longer than normal. The ensuing gas buildup may break your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can leak carbon monoxide, which is normally emitted outdoors. This toxic gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, McNatt Inc recommends turning it off and contacting us at 361-247-0605. Too much natural gas in your furnace or a cracked heat exchanger are hazardous issues that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver heated air around your home. If the ductwork wasn’t put in correctly or is getting old, it can be noisy when your furnace runs. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with McNatt Inc at 361-247-0605 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace depends on an internal transformer to run on the correct voltage. If wires or the box is loose, you could notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or cold air across your home, and a capacitor, which starts the motor. If either of these components are going out, 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 related to something little, like an unfastened screw, or something major, like a broken component. In either case, we recommend shutting off your furnace and getting in touch with our heating specialists at 361-247-0605 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to tell you it needs some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be dilapidated or a bearing might need to be greased. We know that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You could also be aware of whistling while the furnace is working if a floor vent is loose. If you’ve examined your vents but are still hearing sound, McNatt Inc can provide support. It’s important to get loose ductwork repaired without delay, as it can make comfort issues in your home and inflate your gas costs.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal noise usually means there’s trouble with your furnace’s blower. Switch off your furnace off immediately and reach us at 361-247-0605 for assistance.

When you’re hearing a strange noise from your furnace, McNatt Inc is ready to help. Contact us at 361-247-0605 to request your furnace repair appointment now.

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