When your furnace is running correctly, it should deliver warm air without creating too much sound. While it’s normal to notice your furnace making noise as it begins running, other disruptions are showing your furnace should get immediate professional support.

Here are some of the most common furnace noises and what they could be indicating. If your furnace is making an atypical noise, our friendly heating specialists are here to assist with the best furnace repair in Des Moines, Iowa.

1. Furnace Makes Banging or Knocking Sounds

You could have a critical situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a few problems. These include gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over time, so that’s why it’s essential to book seasonal furnace maintenance with Heartland Heating & Cooling. One of the jobs our technicians complete during this work is clean your furnace’s burners. When this piece gets dirty, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The following gas buildup might break your furnace’s heat exchanger, where natural gas changes into heat. Any breaks in it can discharge carbon monoxide, which is regularly vented away from your home. This toxic gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Heartland Heating & Cooling recommends turning it off and contacting us at 515-344-3579. Excessive natural gas in your furnace or a fractured heat exchanger are serious issues that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move warm air throughout your home. If the ductwork wasn’t installed correctly or is aging, it can make a lot of noise when your furnace runs. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with Heartland Heating & Cooling at 515-344-3579 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace depends on an internal transformer to work on the right voltage. If wires or the box is loose, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends warm or chilly air around your space, and a capacitor, which starts the motor. If either of these components are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it may be the result of something minor, like a loose screw, or something major, like a broken component. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 515-344-3579 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to alert you it requires some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn down or a bearing could need to be greased. We are aware that maintenance sometimes slips your mind, but our techs can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You may also hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve checked your vents but are still noticing sound, Heartland Heating & Cooling can assist you. It’s essential to get loose ductwork fixed quickly, because it can make comfort troubles in your home and drive up your heating expenses.

6. Furnace Making a Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal racket frequently means there’s a problem with your furnace’s blower. Turn off your furnace off instantly and call us at 515-344-3579 for support.

When you’re noticing an atypical noise from your furnace, Heartland Heating & Cooling is available to help. Contact us at 515-344-3579 to book your furnace repair appointment today.