When your furnace is running properly, it should give warm air without creating too much noise. While it’s common to hear your furnace making noise as it starts up, other noises are indicating your furnace needs immediate professional assistance.

Here are some of the most common furnace noises and what they could be signaling. If your furnace is making a strange noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Port Orchard, Washington.

1. Furnace Making a Banging Noise

You could have a serious problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can mean 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 turns dirty over the years, so that’s why it’s important to set annual furnace maintenance with Air Masters Heating & Cooling. One of the jobs our technicians complete during this appointment is clean your furnace’s burners. When this piece gets grubby, you could hear your furnace making a loud rumbling noise if ignition takes longer than normal. The resulting gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can emit carbon monoxide, which is normally emitted outside. This toxic gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Air Masters Heating & Cooling recommends turning it off and reaching us at 360-205-7115. Too much natural gas in your furnace or a cracked heat exchanger are dangerous issues that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide hot air throughout your residence. If the ductwork wasn’t installed correctly or is aging, it can be loud when your furnace runs. This could be the issue if your furnace makes a banging noise when it shuts off. Call Air Masters Heating & Cooling at 360-205-7115 and we’ll determine the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often means there’s an electrical issue, 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 needs to be tightened, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends warm or cold air around your house, and a capacitor, which turns on the motor. If either of these parts are going out, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be due to something little, like an unsecure screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and calling our heating specialists at 360-205-7115 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to get your attention it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be lubed. We know that maintenance frequently slips your mind, but our professionals can get your furnace running 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 may also hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve examined your vents but are still sensing whistling, Air Masters Heating & Cooling can provide support. It’s essential to get loose ductwork repaired fast, since it can create comfort issues in your house and drive up your gas expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound often means there’s a problem with your furnace’s blower. Turn off your furnace off right away and contact us at 360-205-7115 for help.

When you’re hearing a strange noise from your furnace, Air Masters Heating & Cooling is ready to provide assistance. Contact us at 360-205-7115 to schedule your furnace repair appointment right away.