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What’s that scary noise coming from your furnace?

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What’s that scary noise coming from your furnace?

Did you hear that?

If you hear a moan, a boom, or a bang, you might suspect a monster’s in your basement causing trouble, what with all the spooky ghosts and goblins lurking around Northern Virginia this time of year. However, chances are if you hear a sound coming from the basement or closet where your furnace lives, it’s coming from your furnace.

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But don’t relax too quickly. It’s important to determine what kind of sound you hear so you know whether or not it’s something that could be dangerous. Sometimes a furnace is just old and creaky, but more often, a furnace noise can signal a serious problem.

Booming – If you hear a boom when the furnace turns on, it could be due to a buildup of gas from a delayed ignition. This requires immediate attention from an HVAC professional since it could be a serious problem.

Clicking – Many times if your furnace keeps clicking, it’s having trouble lighting. It may just be due to a loose wire, but it should be looked at soon since it could also be caused by a leaking gas valve.

Screeching – Screeching or squealing probably have something to do with the motor, a belt, or a bearing. You’re not in immediate danger, but if left unattended it could lead to much bigger problems.

Rattling –  When your furnace is running, it may sound like it has a screw loose, and it might. The cover panels may just be loose and you can tighten the screws to hold them in place. But if you don’t find a loose panel, rattling may also mean there is a leak in your heat exchanger  – a dangerous concern because this could allow carbon monoxide to leak.

Rumbling – Rumbling may mean that your pilot light needs to be adjusted.

As you can see, it’s always better to be safe than sorry. If you hear a noise, have a brave HVAC technician at Snell Heating and Air Conditioning check it out.

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