When your furnace is running correctly, it should deliver heat without making too much sound. While it’s common to notice your furnace making noise as it starts up, other noises are signaling your furnace should get immediate professional help.

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making a weird noise, our friendly heating pros are here to help with the best furnace repair in Sandpoint, Idaho.

1. Furnace Makes a Banging Sound

You could have a serious situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might signal 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 turns filthy over time, so that’s why it’s essential to set annual furnace maintenance with Age Heating & Cooling. One of the things our professionals complete during this service is clean your furnace’s burners. When this part gets grubby, you may 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 breaks in it can leak carbon monoxide, which is ordinarily emitted outside. This toxic gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Age Heating & Cooling advises turning it off and reaching us at 208-603-2210. Excessive natural gas in your furnace or a broken heat exchanger are critical issues that should get prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air throughout your residence. If the ductwork wasn’t put in correctly or is getting old, it can make a lot of noise when your furnace is heating. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with Age Heating & Cooling at 208-603-2210 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 often is telling you there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the right voltage. If wires or the box isn’t tight enough, you may hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves hot or cold air around your residence, and a capacitor, which triggers the motor. If either of these pieces are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be due to something little, like a loose screw, or something major, like a broken component. In either case, we advise shutting your furnace off and calling our heating professionals at 208-603-2210 for support.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to get your attention it requires some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing might need to be greased. We realize that maintenance sometimes slips your mind, but our pros can get your furnace running 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 the result of an air leak in your ductwork. You may also notice whistling while the furnace is running if a floor vent is loose. If you’ve looked at your vents but are still hearing sound, Age Heating & Cooling can assist you. It’s important to get loose ductwork repaired without delay, as it can result in comfort issues in your home and increase your gas expenses.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal noise often means there’s a problem with your furnace’s blower. Turn off your furnace off promptly and call us at 208-603-2210 for help.

When you’re noticing a weird noise from your furnace, Age Heating & Cooling is ready to help. Contact us at 208-603-2210 to book your furnace repair appointment today.