When your furnace is working properly, it should provide heat without creating too much sound. While it’s normal to catch your furnace making noise as it turns on, other disruptions are signaling your furnace requires immediate professional assistance.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making an atypical noise, our friendly heating professionals are here to assist with the best furnace repair in Payson, Arizona.

1. Furnace Makes Banging or Knocking Sounds

You might have a critical situation on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it may mean there could be a couple of problems. These include gas increasing in your furnace or a ductwork problem.

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 North Mechanical Heating and Cooling. One of the things our pros do during this service is clean your furnace’s burners. When this part gets grubby, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas transforms into warmth. Any fractures in it can discharge carbon monoxide, which is normally released away from your home. This hazardous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, North Mechanical Heating and Cooling urges you to turn it off and contacting us at 928-263-8570. Excessive natural gas in your furnace or a cracked heat exchanger are serious problems that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver hot air around your home. If the ductwork wasn’t put in properly or is getting dated, it can be loud when your furnace is heating. This might be the problem if your furnace makes a banging noise when it shuts off. Get in touch with North Mechanical Heating and Cooling at 928-263-8570 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound often is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to work on the right voltage. If wires or the box is loose, you might hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes heated or cooled air throughout your house, and a capacitor, which starts the motor. If either of these pieces are failing, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be the result of something small, like a loose screw, or something major, like a broken part. In either case, we urge you to shut your furnace off and calling our heating specialists at 928-263-8570 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to get your attention it needs some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing could need to be greased. We know that maintenance often slips your mind, but our techs can get your furnace operating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You could also be aware of whistling while the furnace is operating if a floor vent is loose. If you’ve checked your vents but are still hearing sound, North Mechanical Heating and Cooling can provide support. It’s critical to get loose ductwork fixed quickly, because it can result in comfort troubles in your residence and drive up your heating bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive 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. Shut down your furnace off promptly and reach our pros at 928-263-8570 for assistance.

When you’re hearing a strange noise from your furnace, North Mechanical Heating and Cooling is available to help. Contact us at 928-263-8570 to schedule your furnace repair appointment right away.