When your furnace is working correctly, it should deliver warm air without generating too much disruption. While it’s common to hear your furnace making noise as it begins running, other disruptions are indicating your furnace needs immediate professional assistance.
Here are some of the most frequent furnace noises and what they can be indicating. If your furnace is making an atypical noise, our friendly heating professionals are here to help with the best furnace repair in Lincoln, Nebraska.
1. Furnace Making a Banging Noise
You may have an urgent issue 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 involve gas increasing in your furnace or a ductwork issue.
Banging Sounds Coming from Your Furnace
Your heating system gets filthy over the years, so that’s why it’s important to book routine furnace maintenance with AW Heating & Air Conditioning. One of the jobs our techs complete during this service is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise when ignition takes more time. The subsequent gas buildup may fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any cracks in it can leak carbon monoxide, which is ordinarily vented outdoors. This hazardous gas can be fatal in large concentrations.
If you’re aware of banging or knocking sounds coming from your furnace, AW Heating & Air Conditioning urges you to turn it off and contacting us at 402-438-7992. Significant natural gas in your furnace or a ruptured heat exchanger are critical issues that necessitate fast attention.
Banging Sounds Coming from Your Ductwork
Your furnace relies on ductwork to provide warm air throughout your home. If the ductwork wasn’t put in properly or is getting dated, it can make a lot of noise when your furnace is on. This may be the problem if your furnace makes a banging noise when it shuts off. Contact AW Heating & Air Conditioning at 402-438-7992 and we’ll pinpoint 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 usually indicates an electrical situation, like with its transformer, blower motor or capacitor.
Your furnace uses an internal transformer to work on the correct voltage. If wires or the box isn’t tight enough, you may hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends warm or cooled air across your home, and a capacitor, which triggers the motor. If either of these components are fading, they will buzz when the furnace starts.
3. Furnace Making a Rattling Noise
If your furnace is making a rattling noise, it can be due to something minor, like a loose screw, or something serious, like a broken piece. In either case, we urge you to shut your furnace off and calling our heating professionals at 402-438-7992 for assistance.
4. Furnace Making a Squealing Noise
If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to tell you it requires some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance often slips your mind, but our pros can get your furnace heating quietly again fast.
5. Furnace Making a Whistling Noise
When you’re noticing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You could also notice whistling while the furnace is operating if a floor vent is loose. If you’ve checked your vents but are still noticing sound, AW Heating & Air Conditioning can assist you. It’s important to get loose ductwork fixed fast, because it can make comfort issues in your home and drive up your heating expenses.
6. Furnace Making a Grinding Noise
It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal sound frequently means there’s an issue with your furnace’s blower. Turn off your furnace off promptly and reach our professionals at 402-438-7992 for help.
When you’re getting an uncommon noise from your furnace, AW Heating & Air Conditioning is here to provide assistance. Contact us at 402-438-7992 to schedule your furnace repair appointment right away.