When your furnace is running properly, it should deliver warm air without making too much sound. While it’s normal to notice your furnace making noise as it turns on, other sounds are signaling your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they could 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 Magnolia, Texas.

1. Furnace Makes a Banging Sound

You might have a serious situation 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 include gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over the years, so that’s why it’s important to schedule seasonal furnace maintenance with JTech Mechanical. One of the jobs our technicians perform during this work is clean your furnace’s burners. When this component gets dirty, you might hear your furnace making a loud rumbling noise after ignition is delayed. The following gas buildup can fracture your furnace’s heat exchanger, where natural gas turns into warmth. Any cracks in it can emit carbon monoxide, which is normally released outside. This toxic gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, JTech Mechanical advises turning it off and contacting us at 281-231-8768. Too much natural gas in your furnace or a ruptured heat exchanger are critical issues that require immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver heated air across your house. If the ductwork wasn’t installed properly or is getting old, it can be loud when your furnace is heating. This might be the case if your furnace makes a banging noise when it shuts off. Get in touch with JTech Mechanical at 281-231-8768 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 is telling you there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or cold air throughout your house, and a capacitor, which triggers the motor. If either of these components are failing, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be related to something minor, like a loose screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 281-231-8768 for assistance.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to alert you it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be lubed. We know that maintenance often 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 likely the result of an air leak in your ductwork. You might also be aware of whistling while the furnace is on if a floor vent isn’t secure. If you’ve examined your vents but are still hearing whistling, JTech Mechanical can provide support. It’s essential to get loose ductwork repaired quickly, because it can create comfort problems in your home and drive up 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 a problem with your furnace’s blower. Switch off your furnace off instantly and call us at 281-231-8768 for help.

When you’re noticing a weird noise from your furnace, JTech Mechanical is ready to support you. Contact us at 281-231-8768 to schedule your furnace repair appointment today.