When your furnace is operating properly, it should provide heat without making too much disruption. While it’s common to notice your furnace making noise as it turns on, other disruptions are signaling your furnace requires immediate professional support.

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 help with the best furnace repair in Derby, Connecticut.

1. Furnace Making a Banging Noise

You might have an urgent problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be a few problems. These include gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s critical to book yearly furnace maintenance with Giordanos Heating and Air Conditioning. One of the things our technicians perform during this appointment is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise if ignition is delayed. The following gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can leak carbon monoxide, which is normally released outdoors. This dangerous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Giordanos Heating and Air Conditioning urges you to turn it off and reaching us at 203-772-8319. Significant natural gas in your furnace or a fractured heat exchanger are critical problems that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move heated air around your house. If the ductwork wasn’t put in properly or is getting old, it can be noisy when your furnace is on. This may be the problem if your furnace makes a banging noise when it shuts off. Call Giordanos Heating and Air Conditioning at 203-772-8319 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound usually indicates an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you might hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves heated or cold air across 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 Making a Rattling Noise

If your furnace is making a rattling noise, it can be the result of something little, like an unsecure screw, or something serious, like a broken part. In either case, we urge you to shut your furnace off and contacting our heating specialists at 203-772-8319 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to alert you it requires some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be lubed. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You might also be aware of whistling while the furnace is on if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing noise, Giordanos Heating and Air Conditioning can assist you. It’s important to get loose ductwork taken care of without delay, since it can create comfort problems in your house and increase your utility costs.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal noise usually means there’s a problem with your furnace’s blower. Turn off your furnace off immediately and call us at 203-772-8319 for support.

When you’re hearing an uncommon noise from your furnace, Giordanos Heating and Air Conditioning is ready to provide assistance. Contact us at 203-772-8319 to schedule your furnace repair appointment right away.