When your furnace is running correctly, it should deliver warm air without creating too much disruption. While it’s normal to hear your furnace making noise as it begins running, other disruptions are indicating your furnace needs immediate professional help.

Here are some of the most frequent furnace noises and what they could be indicating. If your furnace is making a weird noise, our friendly heating professionals are here to assist with the best furnace repair in Smyrna, Delaware.

1. Furnace Making a Banging Noise

You might 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 can signal there could be a few problems. These range from gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty as time passes, so that’s why it’s important to book seasonal furnace maintenance with Fletcher Plumbing, Heating & AC. One of the jobs our technicians complete during this service is clean your furnace’s burners. When this component gets grubby, you may hear your furnace making a loud rumbling noise after ignition takes longer than normal. The following gas buildup can fracture your furnace’s heat exchanger, where natural gas turns into warmth. Any cracks in it can discharge carbon monoxide, which is regularly released away from your home. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Fletcher Plumbing, Heating & AC urges you to turn it off and contacting us at 302-653-0503. Excessive natural gas in your furnace or a fractured heat exchanger are critical problems that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air throughout your residence. If the ductwork wasn’t designed properly or is aging, it can be loud when your furnace runs. This can be the case if your furnace makes a banging noise when it shuts off. Get in touch with Fletcher Plumbing, Heating & AC at 302-653-0503 and we’ll determine the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to work on the proper 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 warm or cooled air around your space, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be the result of something little, like a loose screw, or something critical, like a broken piece. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 302-653-0503 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to get your attention it requires some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be lubricated. We realize that maintenance frequently slips your mind, but our professionals can get your furnace heating quietly again rapidly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You could 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 sound, Fletcher Plumbing, Heating & AC can help. It’s important to get loose ductwork repaired fast, as it can result in comfort problems in your residence and increase your gas bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal sound typically means there’s an issue with your furnace’s blower. Turn off your furnace off immediately and call our pros at 302-653-0503 for support.

When you’re getting a weird noise from your furnace, Fletcher Plumbing, Heating & AC is available to provide assistance. Contact us at 302-653-0503 to request your furnace repair appointment today.