When your furnace is working correctly, it should give warmth without generating too much noise. While it’s expected to hear your furnace making noise as it turns on, other noises are signaling your furnace should get immediate professional assistance.

Here are some of the most frequent furnace noises and what they could be indicating. If your furnace is making an atypical noise, our friendly heating pros are here to assist with the best furnace repair in Modesto, California.

1. Furnace Makes Banging or Knocking Sounds

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 indicate there could be a couple of problems. These involve gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s critical to book yearly furnace maintenance with Jet Electrical, Air Conditioning, Heating & Plumbing. One of the tasks our technicians do during this service is clean your furnace’s burners. When this part gets grubby, you might hear your furnace making a loud rumbling noise when ignition is delayed. The following gas buildup can fracture your furnace’s heat exchanger, where natural gas changes into heat. Any fractures in it can discharge carbon monoxide, which is regularly released away from your home. This dangerous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Jet Electrical, Air Conditioning, Heating & Plumbing urges you to turn it off and reaching us at 209-618-4595. Excessive natural gas in your furnace or a cracked heat exchanger are dangerous troubles that should get immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver hot air throughout your home. If the ductwork wasn’t installed right or is aging, it can be loud when your furnace runs. This may be the issue if your furnace makes a banging noise when it shuts off. Call Jet Electrical, Air Conditioning, Heating & Plumbing at 209-618-4595 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace depends on an internal transformer to work on the right voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves heated or chilly air across your house, and a capacitor, which triggers the motor. If either of these pieces are failing, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

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 contacting our heating specialists at 209-618-4595 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to tell you it requires some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing may need to be lubed. We are aware that maintenance often slips your mind, but our pros can get your furnace running quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You might also notice whistling while the furnace is running if a floor vent is loose. If you’ve looked at your vents but are still sensing noise, Jet Electrical, Air Conditioning, Heating & Plumbing can help. It’s essential to get loose ductwork repaired quickly, as it can make comfort troubles in your residence and drive up your energy bills.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal racket often means there’s an issue with your furnace’s blower. Switch off your furnace off now and contact our pros at 209-618-4595 for help.

When you’re getting an atypical noise from your furnace, Jet Electrical, Air Conditioning, Heating & Plumbing is available to support you. Contact us at 209-618-4595 to schedule your furnace repair appointment right away.