When your furnace is working like it should, it should deliver warm air without making too much disruption. While it’s common to hear your furnace making noise as it begins running, other sounds are indicating your furnace requires immediate professional help.

Here are some of the most frequent furnace noises and what they might be signaling. If your furnace is making an odd noise, our friendly heating pros are here to assist with the best furnace repair in Laurel, Maryland.

1. Furnace Making a Banging Noise

You could 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 a few problems. These involve gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy over time, so that’s why it’s essential to book yearly furnace maintenance with H&C Heating and Cooling. One of the jobs our pros do during this work is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The resulting gas buildup might break your furnace’s heat exchanger, where natural gas transforms into heat. Any fractures in it can leak carbon monoxide, which is normally released outside. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, H&C Heating and Cooling recommends turning it off and calling us at 301-960-3247. Too much natural gas in your furnace or a ruptured heat exchanger are hazardous problems that necessitate fast service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver hot air around your residence. If the ductwork wasn’t designed correctly or is getting old, it can be noisy when your furnace runs. This could be the issue if your furnace makes a banging noise when it shuts off. Get in touch with H&C Heating and Cooling at 301-960-3247 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound typically indicates an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run 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 warm or cold air around your home, and a capacitor, which starts the motor. If either of these components are going out, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be due to something little, like a loose screw, or something major, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating professionals at 301-960-3247 for assistance.

4. Furnace Is Making a High-Pitched Squealing Sound

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

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You could also hear whistling while the furnace is operating if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing sound, H&C Heating and Cooling can provide support. It’s essential to get loose ductwork fixed without delay, since it can make comfort issues in your residence and drive up your heating bills.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal sound frequently means there’s trouble with your furnace’s blower. Switch off your furnace off right away and reach our professionals at 301-960-3247 for support.

When you’re getting an uncommon noise from your furnace, H&C Heating and Cooling is ready to support you. Contact us at 301-960-3247 to schedule your furnace repair appointment now.