Clanging, Hissing and Rattling: What Six Familiar Furnace Sounds Mean

When your furnace is operating like it should, it should give warmth without making too much sound. While it’s expected to catch your furnace making noise as it starts up, other noises are signaling your furnace needs immediate professional support.

Here are some of the most reported furnace noises and what they could mean. If your furnace is making an odd noise, our friendly heating specialists are here to assist with the best furnace repair in Narvon, Pennsylvania.

1. Furnace Making a Banging Noise

You could have a serious problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a couple of problems. These include gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty as time passes, so that’s why it’s essential to schedule annual furnace maintenance with Ameri-Tec. One of the tasks our professionals perform during this appointment is clean your furnace’s burners. When this component gets dirty, you may hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup might fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can emit carbon monoxide, which is ordinarily vented away from your home. This toxic gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Ameri-Tec recommends turning it off and contacting us at 717-479-4950. Significant natural gas in your furnace or a fractured heat exchanger are critical problems that necessitate immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air around your residence. If the ductwork wasn’t put in properly or is getting old, it can be noisy when your furnace runs. This might be the case if your furnace makes a banging noise when it shuts off. Get in touch with Ameri-Tec at 717-479-4950 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace relies on an internal transformer to work on the proper 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 works with a blower motor, which sends hot or chilly air across your home, and a capacitor, which turns on the motor. If either of these pieces are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be related to something little, like an unfastened screw, or something major, like a broken piece. In either case, we advise shutting your furnace off and calling our heating specialists at 717-479-4950 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to tell you it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing might need to be lubricated. We know that maintenance frequently slips your mind, but our techs can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You could also notice whistling while the furnace is operating if a floor vent isn’t tight. If you’ve looked at your vents but are still hearing noise, Ameri-Tec can provide support. It’s important to get loose ductwork fixed without delay, since it can make comfort issues in your residence and inflate your gas 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 sound usually means there’s a problem with your furnace’s blower. Switch off your furnace off right away and reach us at 717-479-4950 for support.

When you’re noticing a weird noise from your furnace, Ameri-Tec is ready to provide assistance. Contact us at 717-479-4950 to request your furnace repair appointment today.