When your furnace is running like it should, it should give warm air without creating too much sound. While it’s expected to notice your furnace making noise as it begins running, other disruptions are indicating your furnace requires immediate professional assistance.

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

1. Furnace Makes Banging or Knocking Sounds

You could have an urgent situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a few problems. These range from gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty as time passes, so that’s why it’s important to set seasonal furnace maintenance with Connolly Electric & Mechanical. One of the tasks our technicians complete during this service is clean your furnace’s burners. When this component gets dirty, you might hear your furnace making a loud rumbling noise after ignition takes longer than normal. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas transforms into warmth. Any fractures in it can leak carbon monoxide, which is regularly vented outdoors. This toxic gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Connolly Electric & Mechanical recommends turning it off and contacting us at 928-251-4327. Significant natural gas in your furnace or a broken heat exchanger are hazardous issues that require prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air around your residence. If the ductwork wasn’t designed right or is getting dated, it can be noisy when your furnace runs. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Connolly Electric & Mechanical at 928-251-4327 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically means there’s an electrical issue, 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 isn’t tight enough, you may notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes heated or cooled air around your home, and a capacitor, which triggers the motor. If either of these components are going out, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be due to something small, like an unfastened screw, or something critical, like a broken piece. In either case, we advise shutting your furnace off and calling our heating pros at 928-251-4327 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to get your attention it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be lubed. We realize that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again quickly.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You may also notice whistling while the furnace is on if a floor vent isn’t secure. If you’ve examined your vents but are still noticing whistling, Connolly Electric & Mechanical can help. It’s critical to get loose ductwork repaired fast, since it can result in comfort problems in your home and increase your heating expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound frequently means there’s trouble with your furnace’s blower. Switch off your furnace off right away and contact our professionals at 928-251-4327 for help.

When you’re noticing a strange noise from your furnace, Connolly Electric & Mechanical is here to help. Contact us at 928-251-4327 to schedule your furnace repair appointment now.