When your furnace is working correctly, it should provide heat without generating too much sound. While it’s normal to notice your furnace making noise as it starts up, other sounds are showing your furnace should get immediate professional support.

Here are some of the most reported furnace noises and what they can mean. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in Litchfield Park, Arizona.

1. Furnace Making a Banging Noise

You may have an urgent issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can mean there could be several problems. These involve gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s important to book annual furnace maintenance with Cooler Tymes LLC. One of the tasks our technicians complete during this service is clean your furnace’s burners. When this component gets dirty, you might hear your furnace making a loud rumbling noise if ignition takes longer than normal. The following gas buildup may break your furnace’s heat exchanger, where natural gas turns into warmth. Any breaks in it can emit carbon monoxide, which is regularly released outdoors. This toxic gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Cooler Tymes LLC recommends turning it off and contacting us at 623-208-6444. Too much natural gas in your furnace or a cracked heat exchanger are critical troubles that require fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move hot air around your house. If the ductwork wasn’t installed properly or is aging, it can be loud when your furnace is on. This can be the problem if your furnace makes a banging noise when it shuts off. Contact Cooler Tymes LLC at 623-208-6444 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often means there’s an electrical situation, 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 needs to be tightened, you may detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or chilly air throughout your house, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be due to something small, like an unsecure screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and contacting our heating specialists at 623-208-6444 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to alert you it needs some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn down or a bearing could need to be greased. We know that maintenance sometimes slips your mind, but our pros can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You could also be aware of whistling while the furnace is running if a floor vent isn’t secure. If you’ve examined your vents but are still sensing whistling, Cooler Tymes LLC can help. It’s critical to get loose ductwork taken care of fast, since it can result in comfort troubles in your residence and drive up your gas 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 usually means there’s an issue with your furnace’s blower. Shut down your furnace off now and reach our pros at 623-208-6444 for support.

When you’re noticing a strange noise from your furnace, Cooler Tymes LLC is available to help. Contact us at 623-208-6444 to request your furnace repair appointment right away.