When your furnace is operating properly, it should give heat without creating too much disruption. While it’s normal to catch your furnace making noise as it turns on, other noises are showing your furnace needs immediate professional help.

Here are some of the most common furnace noises and what they can be indicating. If your furnace is making a weird noise, our friendly heating specialists are here to assist with the best furnace repair in Pflugerville, Texas.

1. Furnace Makes Banging or Knocking Sounds

You could 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 mean there could be a couple of problems. These involve gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over the years, so that’s why it’s essential to set annual furnace maintenance with Evenaire Heating & Air Conditioning. One of the jobs our pros complete during this appointment 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 ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas transforms into warmth. Any cracks in it can emit carbon monoxide, which is normally vented outdoors. This toxic gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Evenaire Heating & Air Conditioning advises turning it off and calling us at 512-355-1482. Significant natural gas in your furnace or a cracked heat exchanger are critical troubles that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move warm air across your home. If the ductwork wasn’t put in right or is getting old, it can make a lot of noise when your furnace is on. This may be the issue if your furnace makes a banging noise when it shuts off. Contact Evenaire Heating & Air Conditioning at 512-355-1482 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

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

Your furnace relies on an internal transformer to operate on the correct voltage. If wires or the box needs to be tightened, you may notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves heated or cold air across your home, and a capacitor, which triggers the motor. If either of these parts are going out, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be the result of something little, like a loose screw, or something critical, like a broken part. In either case, we recommend shutting off your furnace and contacting our heating professionals at 512-355-1482 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to tell you it requires 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 lubricated. We are aware that maintenance sometimes slips your mind, but our techs can get your furnace operating quietly again rapidly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You could also notice whistling while the furnace is working if a floor vent isn’t tight. If you’ve looked at your vents but are still hearing sound, Evenaire Heating & Air Conditioning can provide support. It’s important to get loose ductwork taken care of fast, as it can result in comfort troubles in your house and drive up your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal racket typically means there’s trouble with your furnace’s blower. Switch off your furnace off right away and call our professionals at 512-355-1482 for assistance.

When you’re noticing a strange noise from your furnace, Evenaire Heating & Air Conditioning is here to support you. Contact us at 512-355-1482 to request your furnace repair appointment today.