When your furnace is working correctly, it should deliver heat without generating too much noise. While it’s expected to hear your furnace making noise as it starts up, other disruptions are showing your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they could mean. If your furnace is making an odd noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Alliance, Nebraska.

1. Furnace Makes Banging or Knocking Sounds

You may have a serious issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can mean there could be several problems. These range from gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty as time passes, so that’s why it’s critical to book annual furnace maintenance with Jack's Heating, Cooling, Stoves & Fireplaces. One of the jobs our techs perform during this work is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise if ignition is delayed. The subsequent gas buildup might crack your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can discharge carbon monoxide, which is regularly vented outside. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Jack's Heating, Cooling, Stoves & Fireplaces recommends turning it off and contacting us at 308-762-1613. Too much natural gas in your furnace or a ruptured heat exchanger are serious troubles that require immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide warm air around your home. If the ductwork wasn’t put in right or is aging, it can make a lot of noise when your furnace runs. This can be the case if your furnace makes a banging noise when it shuts off. Get in touch with Jack's Heating, Cooling, Stoves & Fireplaces at 308-762-1613 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound usually is telling you there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run on the right voltage. If wires or the box is loose, you may detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or cold air around your space, and a capacitor, which turns on the motor. If either of these pieces are fading, they will buzz when the furnace switches on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be related to something small, like a loose screw, or something major, like a broken piece. In either case, we urge you to shut your furnace off and calling our heating pros at 308-762-1613 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 requires some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn down or a bearing could need to be greased. We realize that maintenance frequently slips your mind, but our pros can get your furnace running quietly again rapidly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent isn’t secure. If you’ve checked your vents but are still sensing noise, Jack's Heating, Cooling, Stoves & Fireplaces can help. It’s important to get loose ductwork repaired without delay, as it can result in comfort issues in your residence and drive up your gas bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal sound usually means there’s an issue with your furnace’s blower. Turn off your furnace off instantly and call our professionals at 308-762-1613 for help.

When you’re getting an uncommon noise from your furnace, Jack's Heating, Cooling, Stoves & Fireplaces is available to provide assistance. Contact us at 308-762-1613 to schedule your furnace repair appointment right away.