When your furnace is running properly, it should provide heat without generating too much noise. While it’s expected to hear your furnace making noise as it begins running, other disruptions are signaling your furnace requires immediate professional support.

Here are some of the most reported furnace noises and what they might be indicating. If your furnace is making a strange noise, our friendly heating pros are here to assist with the best furnace repair in Mason City, Iowa.

1. Furnace Makes a Banging Sound

You could have an urgent situation on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can mean there could be several problems. These involve gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over time, so that’s why it’s essential to schedule routine furnace maintenance with Mechanical Air Systems Co. One of the jobs our professionals complete during this work 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 ensuing gas buildup may break your furnace’s heat exchanger, where natural gas turns into heat. Any cracks in it can emit carbon monoxide, which is ordinarily vented outdoors. This hazardous gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Mechanical Air Systems Co advises turning it off and contacting us at 641-243-4654. Too much natural gas in your furnace or a broken heat exchanger are serious troubles that require prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move hot air across your home. If the ductwork wasn’t put in correctly or is aging, it can be noisy when your furnace is heating. This may be the case if your furnace makes a banging noise when it shuts off. Get in touch with Mechanical Air Systems Co at 641-243-4654 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you could detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes hot or cold air around your space, and a capacitor, which starts the motor. If either of these components are fading, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be due to something little, like a loose screw, or something serious, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating pros at 641-243-4654 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to tell you it requires some TLC. If you’ve neglected furnace maintenance recently, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance often slips your mind, but our technicians can get your furnace running quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You may also be aware of whistling while the furnace is working if a floor vent is loose. If you’ve looked at your vents but are still sensing whistling, Mechanical Air Systems Co can help. It’s critical to get loose ductwork taken care of quickly, since it can result in comfort troubles in your home and drive up your energy costs.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal racket often means there’s an issue with your furnace’s blower. Switch off your furnace off now and contact our professionals at 641-243-4654 for support.

When you’re noticing an atypical noise from your furnace, Mechanical Air Systems Co is here to provide assistance. Contact us at 641-243-4654 to schedule your furnace repair appointment now.