When your furnace is working like it should, it should deliver warmth without generating too much disruption. While it’s common to notice your furnace making noise as it turns on, other disruptions are indicating your furnace should get immediate professional help.

Here are some of the most frequent furnace noises and what they can be signaling. If your furnace is making a strange noise, our friendly heating pros are here to assist with the best furnace repair in Kearney, Nebraska.

1. Furnace Makes a Banging Sound

You might have a serious 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 several problems. These involve gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty as time passes, so that’s why it’s important to book yearly furnace maintenance with Thurston Heating & Air Conditioning. One of the tasks our technicians complete during this work is clean your furnace’s burners. When this piece gets grimy, you might hear your furnace making a loud rumbling noise after ignition takes more time. The ensuing gas buildup may fracture your furnace’s heat exchanger, where natural gas transforms into heat. Any cracks in it can leak carbon monoxide, which is ordinarily released outdoors. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Thurston Heating & Air Conditioning advises turning it off and calling us at 308-624-3485. Too much natural gas in your furnace or a fractured heat exchanger are hazardous problems that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide heated air around your house. If the ductwork wasn’t put in correctly or is getting dated, it can be noisy when your furnace is on. This may be the case if your furnace makes a banging noise when it shuts off. Get in touch with Thurston Heating & Air Conditioning at 308-624-3485 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace depends on an internal transformer to operate on the correct voltage. If wires or the box isn’t tight enough, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or cold air throughout your rooms, and a capacitor, which triggers the motor. If either of these parts are going out, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it may be due to something minor, like an unfastened screw, or something major, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating pros at 308-624-3485 for assistance.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to tell you it could use some TLC. If you’ve neglected furnace maintenance recently, belts could be worn down or a bearing might need to be greased. We are aware that maintenance often slips your mind, but our techs can get your furnace operating quietly again rapidly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You could also hear whistling while the furnace is running if a floor vent isn’t secure. If you’ve looked at your vents but are still sensing noise, Thurston Heating & Air Conditioning can provide support. It’s essential to get loose ductwork fixed fast, since it can result in comfort problems in your home and drive up your utility costs.

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 noise frequently means there’s a problem with your furnace’s blower. Shut down your furnace off now and reach us at 308-624-3485 for assistance.

When you’re noticing an uncommon noise from your furnace, Thurston Heating & Air Conditioning is available to help. Contact us at 308-624-3485 to schedule your furnace repair appointment today.