When your furnace is operating properly, it should give warm air without generating too much disruption. While it’s common to notice your furnace making noise as it turns on, other noises are showing your furnace requires immediate professional support.

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

1. Furnace Makes a Banging Sound

You could have an urgent problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may indicate there could be a couple of problems. These include gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over time, so that’s why it’s critical to set annual furnace maintenance with 1st Choice Heating & Air Conditioning. One of the things our technicians complete during this work is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise after ignition takes more time. The ensuing gas buildup might crack your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can emit carbon monoxide, which is normally released away from your home. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, 1st Choice Heating & Air Conditioning urges you to turn it off and contacting us at 949-204-0859. Significant natural gas in your furnace or a broken heat exchanger are critical issues that require prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver heated air across your residence. If the ductwork wasn’t installed correctly or is getting old, it can be noisy when your furnace is heating. This may be the issue if your furnace makes a banging noise when it shuts off. Call 1st Choice Heating & Air Conditioning at 949-204-0859 and we’ll determine the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to operate on the correct voltage. If wires or the box is loose, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves heated or chilly air around your house, and a capacitor, which turns on the motor. If either of these parts are fading, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be the result of something minor, like an unsecure screw, or something critical, like a broken piece. In either case, we advise shutting your furnace off and contacting our heating professionals at 949-204-0859 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to alert you it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be lubricated. We realize that maintenance often slips your mind, but our pros can get your furnace heating quietly again quickly.

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 may also notice whistling while the furnace is running if a floor vent isn’t tight. If you’ve examined your vents but are still hearing sound, 1st Choice Heating & Air Conditioning can help. It’s critical to get loose ductwork repaired without delay, because it can result in comfort problems in your house and increase your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal sound frequently means there’s an issue with your furnace’s blower. Switch off your furnace off immediately and call our pros at 949-204-0859 for help.

When you’re noticing an atypical noise from your furnace, 1st Choice Heating & Air Conditioning is here to provide assistance. Contact us at 949-204-0859 to book your furnace repair appointment now.