When your furnace is operating properly, it should deliver warm air without generating too much noise. While it’s normal to catch your furnace making noise as it starts up, other disruptions are showing your furnace should get immediate professional support.

Here are some of the most common furnace noises and what they could mean. If your furnace is making an odd noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Bloomfield, Indiana.

1. Furnace Makes a Banging Sound

You may have an urgent issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may mean 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 becomes dirty over time, so that’s why it’s important to schedule yearly furnace maintenance with Stanford Heating & Cooling. One of the things our techs complete during this appointment is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise when ignition takes more time. The subsequent gas buildup can fracture your furnace’s heat exchanger, where natural gas transforms into warmth. Any breaks in it can leak carbon monoxide, which is ordinarily emitted away from your home. This dangerous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Stanford Heating & Cooling urges you to turn it off and contacting us at 812-825-8695. Excessive natural gas in your furnace or a cracked heat exchanger are serious problems that should get prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide hot air around your home. If the ductwork wasn’t designed right or is getting dated, it can make a lot of noise when your furnace is on. This may be the case if your furnace makes a banging noise when it shuts off. Call Stanford Heating & Cooling at 812-825-8695 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace depends on an internal transformer to run on the right voltage. If wires or the box isn’t tight enough, you might hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends hot or chilly air across your house, and a capacitor, which triggers the motor. If either of these parts are going out, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be due to something little, like an unsecure screw, or something critical, like a broken component. In either case, we recommend shutting off your furnace and calling our heating specialists at 812-825-8695 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to alert you it needs some TLC. If you’ve skipped furnace maintenance recently, belts could be worn out or a bearing may need to be lubricated. We are aware that maintenance sometimes slips your mind, but our pros can get your furnace operating quietly again fast.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You could also notice whistling while the furnace is on if a floor vent isn’t secure. If you’ve checked your vents but are still noticing whistling, Stanford Heating & Cooling can help. It’s important to get loose ductwork fixed quickly, as it can result in comfort troubles in your house and drive up your heating 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 noise typically means there’s trouble with your furnace’s blower. Shut down your furnace off immediately and contact us at 812-825-8695 for assistance.

When you’re getting a weird noise from your furnace, Stanford Heating & Cooling is available to support you. Contact us at 812-825-8695 to request your furnace repair appointment now.