When your furnace is working correctly, it should deliver warm air without generating too much sound. While it’s normal to catch your furnace making noise as it turns on, other disruptions are signaling your furnace needs immediate professional assistance.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Safford, Arizona.

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 might indicate there could be a couple of problems. These range from gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over the years, so that’s why it’s important to set seasonal furnace maintenance with B&D Air Conditioning. One of the things our technicians do during this service is clean your furnace’s burners. When this component gets grubby, you might hear your furnace making a loud rumbling noise when ignition takes more time. The ensuing gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can emit carbon monoxide, which is ordinarily released outside. This dangerous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, B&D Air Conditioning advises turning it off and contacting us at 928-432-6018. Too much natural gas in your furnace or a fractured heat exchanger are dangerous problems that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air across your residence. If the ductwork wasn’t designed right or is getting dated, it can be noisy when your furnace runs. This might be the issue if your furnace makes a banging noise when it shuts off. Contact B&D Air Conditioning at 928-432-6018 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

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 problem, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run 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 has a blower motor, which moves warm or cold air across your space, and a capacitor, which turns on the motor. If either of these parts are going out, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be due to something small, like a loose screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and calling our heating pros at 928-432-6018 for assistance.

4. Furnace Making a Squealing Noise

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

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You might also notice whistling while the furnace is running if a floor vent isn’t secure. If you’ve checked your vents but are still sensing sound, B&D Air Conditioning can assist you. It’s important to get loose ductwork repaired quickly, since it can make comfort troubles in your home and increase your utility expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise typically means there’s a problem with your furnace’s blower. Shut down your furnace off promptly and reach our pros at 928-432-6018 for support.

When you’re noticing an atypical noise from your furnace, B&D Air Conditioning is here to support you. Contact us at 928-432-6018 to book your furnace repair appointment now.