When your furnace is working properly, it should give warm air without making too much noise. While it’s expected to catch your furnace making noise as it begins running, other sounds are indicating your furnace needs immediate professional assistance.

Here are some of the most reported furnace noises and what they could be indicating. If your furnace is making an odd noise, our friendly heating pros are here to fix the problem with the best furnace repair in Northglenn, Colorado.

1. Furnace Making a Banging Noise

You may 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 may signal there could be a few problems. These include gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over time, so that’s why it’s critical to set annual furnace maintenance with Northglenn Heating & Air Conditioning. One of the things our professionals perform during this work is clean your furnace’s burners. When this part gets grubby, you might hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup may crack your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can discharge carbon monoxide, which is normally released away from your home. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Northglenn Heating & Air Conditioning urges you to turn it off and contacting us at 303-452-4146. Too much natural gas in your furnace or a broken heat exchanger are serious troubles that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move hot air across your house. If the ductwork wasn’t put in correctly or is aging, it can be noisy when your furnace is heating. This might be the case if your furnace makes a banging noise when it shuts off. Contact Northglenn Heating & Air Conditioning at 303-452-4146 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently means there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to work on the correct voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes heated or cooled air around your rooms, and a capacitor, which triggers the motor. If either of these components are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be due to something minor, like an unfastened screw, or something major, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating pros at 303-452-4146 for help.

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 alert you it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing might need to be lubed. We know that maintenance often slips your mind, but our pros can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely because 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 examined your vents but are still sensing whistling, Northglenn Heating & Air Conditioning can assist you. It’s essential to get loose ductwork fixed without delay, because it can create comfort troubles in your home and drive up your utility bills.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal racket frequently means there’s trouble with your furnace’s blower. Shut down your furnace off instantly and call our professionals at 303-452-4146 for support.

When you’re noticing an uncommon noise from your furnace, Northglenn Heating & Air Conditioning is ready to help. Contact us at 303-452-4146 to schedule your furnace repair appointment now.