When your furnace is operating like it should, it should give warmth without creating too much disruption. While it’s expected to notice your furnace making noise as it turns on, other noises are showing your furnace should get immediate professional help.

Here are some of the most common furnace noises and what they could mean. If your furnace is making a weird noise, our friendly heating professionals are here to assist with the best furnace repair in Los Angeles, California.

1. Furnace Makes a Banging Sound

You might have a serious problem on your hands if you’re hearing 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 increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s important to set yearly furnace maintenance with AZ Air Conditioning and Heating. One of the things our techs perform during this service is clean your furnace’s burners. When this part gets grubby, you may hear your furnace making a loud rumbling noise if ignition takes longer than normal. The resulting gas buildup might fracture your furnace’s heat exchanger, where natural gas changes into warmth. Any cracks in it can discharge carbon monoxide, which is ordinarily vented away from your home. This hazardous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, AZ Air Conditioning and Heating advises turning it off and calling us at 800-296-5088. Excessive natural gas in your furnace or a broken heat exchanger are hazardous issues that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move hot air throughout your house. If the ductwork wasn’t installed properly or is aging, it can be loud when your furnace is heating. This could be the issue if your furnace makes a banging noise when it shuts off. Contact AZ Air Conditioning and Heating at 800-296-5088 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically is telling you there’s an electrical situation, 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 is loose, you could hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves warm or chilly air throughout your home, and a capacitor, which triggers the motor. If either of these pieces are fading, 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 little, like an unfastened screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating specialists at 800-296-5088 for assistance.

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 making an effort to alert you it requires some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing might need to be lubricated. We are aware that maintenance frequently slips your mind, but our professionals can get your furnace operating quietly again quickly.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s frequently the result 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 whistling, AZ Air Conditioning and Heating can assist you. It’s essential to get loose ductwork repaired fast, because it can make comfort troubles in your home and inflate your heating expenses.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal racket usually means there’s trouble with your furnace’s blower. Turn off your furnace off promptly and reach our pros at 800-296-5088 for assistance.

When you’re noticing an uncommon noise from your furnace, AZ Air Conditioning and Heating is here to support you. Contact us at 800-296-5088 to request your furnace repair appointment right away.