When your furnace is working correctly, it should deliver warm air without making too much sound. While it’s common to hear your furnace making noise as it begins running, other noises are signaling your furnace should get immediate professional help.

Here are some of the most frequent furnace noises and what they can mean. If your furnace is making an odd noise, our friendly heating specialists are here to assist with the best furnace repair in Mission Viejo, California.

1. Furnace Makes Banging or Knocking Sounds

You could have a critical situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might signal there could be a couple of problems. These range from gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over time, so that’s why it’s critical to book seasonal furnace maintenance with 1st Choice Heating & Air Conditioning. One of the things our professionals do during this work is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise after ignition takes more time. The following gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into heat. Any breaks in it can emit carbon monoxide, which is ordinarily released outdoors. This hazardous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, 1st Choice Heating & Air Conditioning urges you to turn it off and contacting us at 949-204-0859. Significant natural gas in your furnace or a cracked heat exchanger are dangerous troubles that should get fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move warm air around your residence. If the ductwork wasn’t installed correctly or is getting old, it can be loud when your furnace runs. This can be the issue if your furnace makes a banging noise when it shuts off. Call 1st Choice Heating & Air Conditioning at 949-204-0859 and we’ll pinpoint 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 usually is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the correct voltage. If wires or the box is loose, you may notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends hot or cooled air across your home, and a capacitor, which triggers the motor. If either of these pieces are fading, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be related to something little, like an unfastened screw, or something critical, like a broken piece. In either case, we recommend shutting off your furnace and contacting our heating professionals at 949-204-0859 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to tell you it needs some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing might need to be lubricated. We know that maintenance sometimes slips your mind, but our techs can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You could also be aware of whistling while the furnace is working if a floor vent is loose. If you’ve looked at your vents but are still sensing sound, 1st Choice Heating & Air Conditioning can help. It’s critical to get loose ductwork repaired without delay, since it can result in comfort troubles in your residence and inflate your gas expenses.

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 typically means there’s a problem with your furnace’s blower. Shut down your furnace off promptly and call our professionals at 949-204-0859 for support.

When you’re hearing an atypical noise from your furnace, 1st Choice Heating & Air Conditioning is here to help. Contact us at 949-204-0859 to schedule your furnace repair appointment today.