When your furnace is working properly, it should give warm air without making too much noise. While it’s expected to notice your furnace making noise as it turns on, other noises are indicating your furnace requires immediate professional help.

Here are some of the most frequent furnace noises and what they could mean. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in Port Orchard, Washington.

1. Furnace Making a Banging Noise

You could have a critical problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a couple of problems. These range from gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over time, so that’s why it’s important to schedule yearly furnace maintenance with Air Masters Heating & Cooling. One of the tasks our pros complete 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 subsequent gas buildup may fracture your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can leak carbon monoxide, which is regularly emitted away from your home. This dangerous gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Air Masters Heating & Cooling advises turning it off and reaching us at 360-205-7115. Significant natural gas in your furnace or a cracked heat exchanger are serious troubles that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver hot air across your house. If the ductwork wasn’t designed properly or is getting dated, it can be loud when your furnace is on. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with Air Masters Heating & Cooling at 360-205-7115 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound often means 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 is loose, you could detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or cooled air around your rooms, and a capacitor, which starts the motor. If either of these components are going out, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be related to something minor, like an unfastened screw, or something major, like a broken piece. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 360-205-7115 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to get your attention it could use some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing might need to be greased. We realize that maintenance frequently slips your mind, but our pros can get your furnace operating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You may also notice whistling while the furnace is on if a floor vent isn’t secure. If you’ve examined your vents but are still hearing sound, Air Masters Heating & Cooling can help. It’s essential to get loose ductwork taken care of fast, as it can create comfort problems in your residence and drive up your utility costs.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal sound often means there’s an issue with your furnace’s blower. Switch off your furnace off promptly and contact our pros at 360-205-7115 for support.

When you’re hearing a strange noise from your furnace, Air Masters Heating & Cooling is here to support you. Contact us at 360-205-7115 to schedule your furnace repair appointment now.