When your furnace is running like it should, it should deliver heat without making too much sound. While it’s expected to catch your furnace making noise as it starts up, other sounds are signaling your furnace needs immediate professional support.

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 pros are here to fix the problem with the best furnace repair in Pacheco, California.

1. Furnace Makes a Banging Sound

You may have a serious situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a few problems. These involve gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over the years, so that’s why it’s critical to set seasonal furnace maintenance with Clean Air HVAC. One of the things our pros complete during this service is clean your furnace’s burners. When this piece gets dirty, you could hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup can crack your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can emit carbon monoxide, which is regularly vented outdoors. This toxic gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Clean Air HVAC recommends turning it off and contacting us at 925-233-6238. Too much natural gas in your furnace or a broken heat exchanger are dangerous troubles that require prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide heated air throughout your home. If the ductwork wasn’t put in properly or is getting dated, it can be noisy when your furnace runs. This may be the case if your furnace makes a banging noise when it shuts off. Contact Clean Air HVAC at 925-233-6238 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound usually is telling you there’s an electrical situation, 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 detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes warm or chilly air across your space, and a capacitor, which triggers the motor. If either of these components are fading, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be due to something little, like an unfastened screw, or something serious, like a broken component. In either case, we urge you to shut your furnace off and contacting our heating pros at 925-233-6238 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to get your attention it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing might need to be greased. We are aware that maintenance sometimes slips your mind, but our professionals can get your furnace running quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You could also hear whistling while the furnace is working if a floor vent isn’t tight. If you’ve examined your vents but are still sensing noise, Clean Air HVAC can assist you. It’s essential to get loose ductwork fixed quickly, because it can create comfort problems in your home and drive up your utility bills.

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 typically means there’s trouble with your furnace’s blower. Switch off your furnace off immediately and reach us at 925-233-6238 for help.

When you’re getting an atypical noise from your furnace, Clean Air HVAC is here to provide assistance. Contact us at 925-233-6238 to book your furnace repair appointment right away.