When your furnace is working like it should, it should deliver warmth without creating too much noise. While it’s expected to hear your furnace making noise as it starts up, other disruptions are indicating your furnace should get immediate professional assistance.

Here are some of the most common furnace noises and what they can mean. If your furnace is making a strange noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Wilmington, Delaware.

1. Furnace Making a Banging Noise

You may have an urgent problem 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 accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over time, so that’s why it’s important to schedule routine furnace maintenance with Ambience HVAC, Inc.. One of the things our professionals do during this work is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise after ignition takes more time. The subsequent gas buildup may crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can leak carbon monoxide, which is regularly emitted away from your home. This hazardous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Ambience HVAC, Inc. urges you to turn it off and contacting us at 302-239-HVAC (4822). Excessive natural gas in your furnace or a fractured heat exchanger are serious troubles that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air around your residence. If the ductwork wasn’t designed properly or is getting dated, it can be loud when your furnace is on. This may be the problem if your furnace makes a banging noise when it shuts off. Contact Ambience HVAC, Inc. at 302-239-HVAC (4822) and we’ll figure out the problem.

2. Furnace Buzzes Constantly

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

Your furnace relies on an internal transformer to run on the correct voltage. If wires or the box isn’t tight enough, you may hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cooled air throughout your residence, and a capacitor, which triggers the motor. If either of these pieces are failing, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be related to something minor, like an unsecure screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and contacting our heating professionals at 302-239-HVAC (4822) for support.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to alert you it needs some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be lubed. We are aware that maintenance sometimes slips your mind, but our technicians can get your furnace running quietly again fast.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You could also be aware of whistling while the furnace is operating if a floor vent is loose. If you’ve looked at your vents but are still noticing noise, Ambience HVAC, Inc. can assist you. It’s essential to get loose ductwork repaired fast, since it can create comfort problems in your residence and inflate your gas costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal sound frequently means there’s an issue with your furnace’s blower. Switch off your furnace off immediately and reach us at 302-239-HVAC (4822) for help.

When you’re hearing an uncommon noise from your furnace, Ambience HVAC, Inc. is here to support you. Contact us at 302-239-HVAC (4822) to schedule your furnace repair appointment today.