Gas Fireplace Making Noise? Causes & Troubleshooting

By Fix4U Team
Fireplace, Appliances

Is your gas fireplace making noise? Few things provide such warm, cozy ambiance on a chilly night as the gentle flickering flames of a gas fireplace. But when your gas fireplace starts making strange noises like banging, screeching, or grinding, it can really diminish your enjoyment of the fire.

While some occasional pops or ticks are normal, consistent unusual noises indicate a problem needing attention. This gas fireplace troubleshooting guide from Fix4U Repairs will cover the common causes of noises and how to troubleshoot them.

Why Is Your Gas Fireplace Making Noise? Causes

Unusual gas fireplace noises can originate from several components:

Fix4U Repairs' Technicians Fixing Gas Fireplace Making Noise Problem In Gta
  • Malfunctioning Gas Valve: The gas valve regulates gas flow to the burner. Sticking valves, faulty solenoids, or worn valve components can all cause noise during operation. Squeaking or chattering noises point to a gas valve issue.
  • Obstructed Venturi: The venturi is responsible for mixing gas and air before combustion. If it becomes clogged with debris or spider webs, hissing or whistling disturbances in the flame can occur.
  • Misaligned Pilot Assembly: If the pilot light flame is misaligned and not properly enveloping the thermocouple, banging noises can happen as it struggles to ignite.
  • Dirty Burners: Burners caked with dust, lint, spider webs, and other debris can cause whistling, rumbling, or popping sounds.
  • Defective Blower/Fan: Case rattles, grinding, buzzing, or squealing can indicate problems with the blower fan motor, blades, or housing.
  • Restricted Flue: A blocked flue damper or chimney obstruction can lead to rumbling or vibrating noises when trying to vent exhaust gases.

How to Troubleshoot a Noisy Gas Fireplace

Pinpointing what’s causing the noise is key to fixing the problem. Try these gas fireplace troubleshooting steps:

  • Check Gas Valve: Examine gas valve and listen for hissing. Remove and disassemble valve to clean or replace worn gaskets, springs, or diaphragms.
  • Inspect Burners and Venturi: Remove logs/media to access burners. Clean away all debris blocking the venturi and burner ports.
  • Realign Pilot Assembly: Loosen pilot bracket and adjust position of pilot hood to properly envelope thermocouple with flame.
  • Replace Blower Fan: Remove and inspect blower fan. Replace any damaged or defective components. Test fan operation.
  • Clear Flue Obstruction: Check flue damper operation and clean any chimney blockage like nests, creosote buildup, etc.
  • Consult Manuals: Refer to your owner’s manual for the specific sound diagnoses and troubleshooting steps recommended by the manufacturer.

If noises persist after troubleshooting, contact a professional for repair assistance.

How to Fix Common Gas Fireplace Noises?

Here are more details on remedying some typical gas fireplace noise issues:

Banging Flue Damper

  1. Locate flue damper handle above fireplace opening.
  2. Loosen set screw on handle.
  3. Twist handle to allow damper to fully open.
  4. Retighten set screw once aligned properly.

Hissing Pilot Flame

  1. Locate pilot assembly under the burners.
  2. Gently bend the pilot tube to better align hood with thermocouple.
  3. Adjust pilot flame to envelop 3/8”-1/2” of thermocouple tip.

Rumbling Burners

  1. Remove logs, stones, glass, etc. to access burners.
  2. Use vacuum, brush, and compressed air to remove debris in and around burner venturi, ports, and tubes.
  3. Reinstall media. Test burner ignition and flame appearance.

Squealing Blower

  1. Unplug or disconnect power to fireplace.
  2. Remove blower fan housing cover.
  3. Vacuum blower wheel and housing to remove dirt buildup.
  4. Manually spin blower wheel to test for stiffness.
  5. Replace blower motor if defective. Reassemble housing when complete.

When Should a Gas Fireplace Make Noise?

While gas fireplaces should operate quietly, some minor sounds during use are normal:

  • A soft woosh when burner ignites
  • Occasional soft pops as gas combusts
  • Clicks from components expanding and contracting
  • Brief rumble when blower activates
  • Quiet hum from blower fan motor

Contact a technician if noises are loud, repetitive, or constant.

Hearing odd noises from your gas fireplace? Call Now to Fix Your Fireplace!

Preventing Future Noisy Fireplace Problems

Follow these tips to keep your gas fireplace running quietly:

  • Have your gas fireplace inspected and serviced annually by a professional.
  • Keep the fireplace free of dust, lint, spider webs, and other debris.
  • Never obstruct the airflow around vents or under the unit.
  • Ensure proper gas pressure and flow to the unit.
  • Use a protective fireplace cover when not in use.

When to Call a Gas Fireplace Pro

If troubleshooting fails to quiet a noisy gas fireplace, reach out to the experts. The experienced technicians at Fix4U Repairs can pinpoint the cause of any rattling, rumbling, or squeaking and get your fireplace noise fixed promptly. We service all major gas fireplace brands and provide guaranteed repairs you can rely on. Contact us at (647) 363-5205!

(647) 363-5205

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