When your furnace is operating correctly, it should deliver warmth without creating too much disruption. While it’s expected to notice your furnace making noise as it begins running, other disruptions are showing your furnace requires immediate professional assistance.

Here are some of the most common furnace noises and what they could be signaling. If your furnace is making an atypical noise, our friendly heating pros are here to help with the best furnace repair in Arlington, Washington.

1. Furnace Makes a Banging Sound

You might 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 might signal there could be several problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over time, so that’s why it’s critical to book yearly furnace maintenance with Service Max Heating & Air Conditioning. One of the things our professionals do during this service is clean your furnace’s burners. When this piece gets grubby, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The ensuing gas buildup might fracture your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can emit carbon monoxide, which is regularly emitted outside. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Service Max Heating & Air Conditioning recommends turning it off and contacting us at 360-255-5857. Excessive natural gas in your furnace or a broken heat exchanger are dangerous troubles that necessitate fast service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air across your house. If the ductwork wasn’t installed correctly or is getting dated, it can be noisy when your furnace is heating. This can be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Service Max Heating & Air Conditioning at 360-255-5857 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t wait 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 relies on an internal transformer to operate on the correct voltage. If wires or the box needs to be tightened, you could hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves heated or cold air throughout your space, and a capacitor, which starts the motor. If either of these parts are failing, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be related to something little, like an unsecure screw, or something major, like a broken part. In either case, we recommend shutting off your furnace and contacting our heating specialists at 360-255-5857 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to alert you it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing may need to be lubricated. We know that maintenance often slips your mind, but our technicians can get your furnace heating quietly again quickly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You could also be aware of whistling while the furnace is working if a floor vent isn’t tight. If you’ve examined your vents but are still sensing whistling, Service Max Heating & Air Conditioning can help. It’s essential to get loose ductwork repaired quickly, since it can make comfort problems in your house and increase your utility 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 often means there’s a problem with your furnace’s blower. Switch off your furnace off right away and call our pros at 360-255-5857 for support.

When you’re noticing an atypical noise from your furnace, Service Max Heating & Air Conditioning is available to support you. Contact us at 360-255-5857 to schedule your furnace repair appointment now.