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5 Reasons Why Your Furnace Is Making a Loud Noise

Furnace Is Making a Loud Noise

Worried about that loud, obnoxious noise coming from your furnace? Don’t worry; the experts at Cardinal are here to help you troubleshoot your alarming furnace noises.

Most appliances make a little noise as they operate, and furnaces aren’t an exception, but a properly functioning furnace shouldn’t make too much noise. If your furnace starts making loud and unusual sounds, there’s probably something wrong. This blog will explore some common furnace sounds and the most likely reasons.

Several problems can cause your furnace to produce loud noises. A malfunctioning furnace will make all types of noises such as scraping, banging, whistling, and popping. 

These noises signify loose parts, cracked heat exchangers, or dirty gas burners. To help you prevent gas leaks in your home, we have created a list of 7 reasons you hear loud furnace sounds and how to troubleshoot them.

Want your furnace repaired right away? Call Cardinal for the best HVAC services in Reston, VA or fill out our online contact form here.

1. The Blower Wheel

When the blower wheel has an issue, it will begin to make a pretty concerning scraping noise that sounds like a metal rubbing against metal. It may have become damaged and needed to become replaced, or it may have become loose, resulting in the scraping noise.

If you hear this noise, turn off your system immediately and check to see if the wheel has become loose or damaged. 

When in doubt, call a technician to inspect it immediately to ensure there are no serious issues with your blower wheel: they will create noticeable wear and tear on your HVAC system after some time.

2. The Blower Motor

Suppose you begin to hear screeching and squealing sounds. In that case, you may have an issue with your blower motor, and technicians can usually resolve its bearing issues by adding lubricant to the blower motor. 

If you choose to lubricate your blower motor alone, use a suitable furnace lubricant and apply it yourself at home.

3. Ductwork

It can be quite alarming if your furnace starts making loud banging and popping noises. Ductwork issues usually cause these. 

Your ductwork may have become loosened or damaged and is warping and rattling as air passes through it. As the metal expands, it can begin to pop.

If you suspect that your ductwork has become damaged or warped, call an HVAC professional to avoid causing further damage to your ductwork. Worst-case scenario, you will have to replace the entire ductwork system, which can be expensive and time-consuming.

4. Loose Components

When components are loose in your furnace, they usually make rattling noises. Ensure that the panels and doors on your furnace are firmly secured, and tighten any loose screws. 

The mechanical parts inside the furnace may also have become loose over time. Turn off your furnace before investigating, and contact a professional to help you diagnose which parts have become loosened.

5. The Burner

The burner can be dangerous and loud if there’s an issue with it. The heat exchanger may have trouble and a delay with ignition. 

This effect of a burner malfunction can be a warning sign of a potentially dangerous problem. Call an HVAC technician to inspect your burners to ensure no further damage to your furnace or home.

How Can I Stop Loud Furnace Noises?

Our number one recommendation is that you should call in a furnace technician to inspect your furnace if it starts making unusual sounds you’ve never heard before. Our technicians Are available to conduct a thorough inspection, identify the problem, and recommend the best action to resolve the issue.

Contact Cardinal Plumbing Cooling & Heating if your furnace makes unusual sounds. We serve residents of Reston, VA, and the surrounding areas. We can provide a professional and honest assessment of why your furnace is making strange noises. We guarantee that our replacements and repairs at Cardinal are sufficient to stop furnace noise!

We also offer affordable annual maintenance plans to help prevent unusual furnace sounds and help with any heating or cooling issues. Call us today if you need us to restore comfort in your home. We vow to offer fast, same-day service and fair upfront pricing. 

Our technicians will always give honest answers and recommendations for all furnace repairs.

Need Furnace Repair or Replacement in Reston, VA?

If you’re hearing all kinds of concerning noises from your furnace, it may be time to call an HVAC professional from Cardinal in Reston, VA. Our technicians are the top experts near you for any HVAC issues repair and maintenance. We will be able to diagnose any issues that you have with your furnace and solve the problem promptly and professionally. 

If you want the best HVAC service in Reston, VA, call us or fill out our online contact form here

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