When your furnace is operating like it should, it should deliver heat without generating too much sound. While it’s common to hear your furnace making noise as it starts up, other disruptions are showing your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they can be indicating. If your furnace is making a strange noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Marshalltown, Iowa.

1. Furnace Making a Banging Noise

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

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s important to schedule annual furnace maintenance with B & G HVAC. One of the jobs our pros complete during this appointment is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The following gas buildup may break your furnace’s heat exchanger, where natural gas changes into warmth. Any breaks in it can leak carbon monoxide, which is regularly released outdoors. This hazardous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, B & G HVAC urges you to turn it off and contacting us at 641-316-3360. Excessive natural gas in your furnace or a cracked heat exchanger are serious issues that should get fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move warm air around your home. If the ductwork wasn’t installed right or is getting dated, it can be loud when your furnace is heating. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with B & G HVAC at 641-316-3360 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

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

Your furnace depends on an internal transformer to operate 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 uses a blower motor, which sends heated or chilly 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 starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be due to something minor, like an unfastened screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and contacting our heating specialists at 641-316-3360 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to get your attention it could use some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn out or a bearing might need to be lubricated. We know that maintenance sometimes slips your mind, but our technicians can get your furnace heating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You may also notice whistling while the furnace is working if a floor vent is loose. If you’ve looked at your vents but are still noticing noise, B & G HVAC can provide support. It’s important to get loose ductwork repaired quickly, since it can result in comfort issues in your home and inflate your energy bills.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal noise frequently means there’s a problem with your furnace’s blower. Shut down your furnace off instantly and contact our professionals at 641-316-3360 for assistance.

When you’re hearing an atypical noise from your furnace, B & G HVAC is ready to support you. Contact us at 641-316-3360 to schedule your furnace repair appointment now.