When your furnace is operating properly, it should deliver warm air without generating too much noise. While it’s expected to notice your furnace making noise as it turns on, other noises are signaling your furnace needs immediate professional support.

Here are some of the most reported furnace noises and what they might be signaling. If your furnace is making an atypical noise, our friendly heating specialists are here to help with the best furnace repair in Wilmington, Delaware.

1. Furnace Makes Banging or Knocking Sounds

You might have a serious 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 several problems. These include gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over time, so that’s why it’s essential to set seasonal furnace maintenance with Ambience HVAC, Inc.. One of the tasks our techs perform during this service is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise if ignition takes more time. The ensuing gas buildup may fracture your furnace’s heat exchanger, where natural gas turns into warmth. Any fractures in it can leak carbon monoxide, which is normally emitted outside. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Ambience HVAC, Inc. advises turning it off and contacting us at 302-239-HVAC (4822). Significant natural gas in your furnace or a fractured heat exchanger are critical troubles that necessitate fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move hot air around your residence. If the ductwork wasn’t installed right or is aging, it can make a lot of noise when your furnace is on. This can be the problem if your furnace makes a banging noise when it shuts off. Call Ambience HVAC, Inc. at 302-239-HVAC (4822) and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often indicates an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run on the proper voltage. If wires or the box needs to be tightened, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or chilly air throughout your home, and a capacitor, which starts the motor. If either of these components are failing, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be related to something small, like an unfastened screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and getting in touch with our heating specialists at 302-239-HVAC (4822) for help.

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 get your attention it requires some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn down or a bearing might need to be lubed. We realize that maintenance sometimes slips your mind, but our techs can get your furnace running quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You may also hear whistling while the furnace is running if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing noise, Ambience HVAC, Inc. can help. It’s important to get loose ductwork fixed quickly, because it can create comfort troubles in your residence and inflate your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal racket often means there’s trouble with your furnace’s blower. Switch off your furnace off now and contact our pros at 302-239-HVAC (4822) for assistance.

When you’re getting an atypical noise from your furnace, Ambience HVAC, Inc. is here to help. Contact us at 302-239-HVAC (4822) to schedule your furnace repair appointment right away.