When your furnace is working like it should, it should deliver warmth without making too much disruption. While it’s common to hear your furnace making noise as it turns on, other disruptions are showing your furnace requires immediate professional assistance.

Here are some of the most reported furnace noises and what they might be signaling. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in Tucson and Phoenix, Arizona.

1. Furnace Making a Banging Noise

You might have an urgent situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be several problems. These range from gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy as time passes, so that’s why it’s critical to set routine furnace maintenance with Desert Husky HVAC/R Services. One of the tasks our professionals perform during this appointment is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise after ignition takes more time. The resulting gas buildup may crack your furnace’s heat exchanger, where natural gas turns into warmth. Any cracks in it can leak carbon monoxide, which is normally emitted away from your home. This toxic gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Desert Husky HVAC/R Services advises turning it off and reaching us at 520-416-5415. Significant natural gas in your furnace or a fractured heat exchanger are serious troubles that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air throughout your residence. If the ductwork wasn’t installed properly or is getting dated, it can make a lot of noise when your furnace runs. This may be the problem if your furnace makes a banging noise when it shuts off. Call Desert Husky HVAC/R Services at 520-416-5415 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound usually is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the correct voltage. If wires or the box isn’t tight enough, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or chilly air around your residence, and a capacitor, which starts the motor. If either of these parts are fading, they will buzz when the furnace turns 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 component. In either case, we advise shutting your furnace off and calling our heating professionals at 520-416-5415 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to get your attention it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing might need to be lubricated. We realize that maintenance often slips your mind, but our techs can get your furnace operating quietly again fast.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You may also notice whistling while the furnace is working if a floor vent is loose. If you’ve examined your vents but are still noticing noise, Desert Husky HVAC/R Services can provide support. It’s important to get loose ductwork fixed fast, since it can create comfort problems in your residence and increase your gas bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound frequently means there’s an issue with your furnace’s blower. Switch off your furnace off immediately and reach our pros at 520-416-5415 for assistance.

When you’re hearing a strange noise from your furnace, Desert Husky HVAC/R Services is ready to provide assistance. Contact us at 520-416-5415 to request your furnace repair appointment right away.