Gas fireplace making noise? Ticks, clicks, fan hum and when to call

Most of the racket from a gas fireplace is steel changing size. Regency, Napoleon, Valor and Mendota all describe ticking, popping or cracking as the firebox warms and cools, and none of them counts it as a defect. The rest comes from smaller parts: a valve that clicks or whirs, the pilot flame, a spark igniter and the fan.

Timing sorts out most of it. Ticks belong to warm-up and cool-down. Clicks and beeps at start-up come from the valve and ignition, while a hum that begins a few minutes into the fire, or carries on after the flames die, is the fan.

Everything below comes from manuals and owner FAQ pages by Regency, Napoleon, Mendota, Valor, Heat & Glo and Majestic, read on 2026-11-12. None of them prints a decibel figure for a gas fireplace, and none promises silence.

Ticking and popping is the steel moving

Steel grows as it heats and shrinks as it cools. Thin and thick pieces move at different rates, and the joints between them tick.

Regency's Grandview G600C manual opens its list of normal operating sounds with "It is possible that you will hear some sounds from your gas appliance. This is perfectly normal due to the fact that there are various gauges and types of steel used within your appliance." The burner tray is a different gauge from the firebox around it, so "the varying thicknesses of steel will expand and contract at slightly different rates which can cause 'ticking' and 'cracking' sounds." Those sounds "will likely re-occur" whenever the temperature inside changes, and from the body of the unit they are heard "throughout the cycling process."

Napoleon covers it in one line of its Tall Luxuria Bay manual: "Expansion / contraction noises during heating up and cooling down cycles are normal and are to be expected." The Valor Portrait 530V FAQ asks "Why do I hear popping or snapping noises?" and answers "As your fireplace heats and cools with normal use, its metal parts will expand and contract, which may cause some noise. This is perfectly normal."

Warranties draw the same line. Both Regency and Mendota write that expansion and contraction of the steel "is normal and is not covered under the terms of this warranty", so a ticking firebox will not get you a replacement.

A bang from an insert can come from the installation

One kind of thermal noise is louder, and Mendota blames the installer for it. The FV33i insert manual forbids using the leveling bolts to lift the insert to clear an ash lip, because that "can result in oil canning noise or louder thermal expansion and constriction banging noise." In capitals, it adds that such noise is not covered by the warranty. Other bolts are ruled out as well, since aftermarket ones "can lead to vibration noise problems or damage to internal components." If your insert booms as it heats and was raised on its bolts, the installer is the first call.

Why does my gas fireplace click?

A gas fireplace clicks mostly at its gas valve, which Regency lists as a normal sound. A quick run of clicks at start-up is different: that is the spark igniter lighting the pilot.

The Grandview G600C manual puts the valve plainly: "As the gas control valve turns ON and OFF, a dull clicking sound may be audible, this is normal operation of a gas regulator or valve."

On a thermostat remote, that click can come back all evening. In thermostat mode, the Heat & Glo FAQ explains, its fireplaces cycle on or off only once the room temperature has passed the setting by "two degrees Fahrenheit or one degree Celsius". The reason is printed too: "We use a range instead of a static number to avoid continuous cycling of the fireplace." Each cycle brings the valve click with it.

Motorized valves whir. Valor's FAQ answers "Why do I hear whirring noises?" with "As you start or adjust your fireplace's flame, the control valve motor turns to adjust the settings. This is perfectly normal." Its operating steps describe more: "If the flames are on, they go down and you hear the valve motor wind down. You hear a clunk and a beep indicating that the valve has received the signal from the remote control."

Beeps come from the remote system

On the Portrait 530V, "Continuing beeps confirm the ignition is in process. The pilot lights up, then the fireplace." A faster series of beeps than usual is a battery warning, and Valor means the batteries in the holder under the firebox, "not the batteries in your remote control handset". The holder's low battery signal is "frequent beeps for 3 seconds when valve motor turns."

Heat & Glo remotes beep for the handset itself. Its answer to a beeping remote starts with "The batteries in your remote are low."

Sparking that never lights the pilot

Electronic ignition sparks for a set time and then gives up. "The attempt for ignition will last approximately 60 seconds," reads the Napoleon manual, and when no flame is sensed in that window the control board stops sparking and locks out until it is reset.

Napoleon's troubleshooting table has rows for "Pilot sparks but will not light." and for "Burner continues to spark and pilot lights but main burner does not light." The fixes in it involve the flame sensor, wiring and grounding, which is technician territory. Napoleon wants annual maintenance "performed by a qualified service technician", and the Mendota manual has the yearly list, including "Clean flame sensor rod/hook using emery cloth", done "by a qualified installer, service agency or the gas supplier."

Hand-lit fireplaces fail differently. The Grandview G600C "has a pilot that must be lighted by hand", with a DC sparker that runs on one AA battery to be "replaced annually", and "If the AA battery is weak, the pilot cannot be lit when depressing the pilot knob on the gas valve." Regency also asks for patience between tries: "The unit should never be turned off, and on again without a minimum of a 60 second wait."

A pilot that keeps going out is often dirt. "Common household particles such as dust, dirt, and dander can build up and cause the pilot to drop out," reads Majestic's common questions page, which recommends servicing before the heating season starts. Valor adds a deliberate shutoff: "If the flame height does not adjust for 7 days, the fireplace will automatically turn the pilot off".

Why is my gas fireplace making noise when it is off?

A gas fireplace that is off can still be cooling, finishing its fan run or burning a standing pilot. All three make sound, and all three are normal in the manuals quoted here.

The fan is the most likely. With the Mendota FV33i in thermostat or smart mode, there is "a 12-1/2 minutes extended blower operation after fireplace flames turn off." Heat & Glo's fan sensor "will also automatically turn the fan off when the fireplace is turned off and the unit cools to a certain temperature," and the Grandview's optional fan goes "OFF automatically when cooled down." Ticking carries on through the same cool-down, which Napoleon calls normal.

Then the pilot. Heat & Glo separates intermittent pilot ignition, where "the pilot does not remain lit when the appliance is off", from a standing safety pilot, where "the pilot stays on even when the appliance is not in use." On a standing pilot the faint sound Regency describes, a "whisper", goes on with the fire out. Heat & Glo puts the pilot at "800 to 1500 BTUs/hr" of gas.

A noise with the fan stopped, the firebox cold and the pilot out is not explained anywhere in these documents. Treat it as Regency's "increased operating noise" and book a service check.

The fan hums, starts late and runs on

A steady hum or whir that changes with the speed setting is the fan, which some makers call a blower. It waits for the firebox to warm, then pushes room air around it.

The wait is deliberate. Heat & Glo wires most fans to a sensor switch that turns them on "when the fireplace heats up to a certain temperature", and some are set to start after a delay "(e.g., seven minutes after startup, etc.)". The sensor is there "so you won't circulate chilly air in your home." FireBrick linings hold heat in the firebox, so those models take longer to start the fan.

How long varies a lot by model. The Grandview's fan "may take 15-30 minutes to turn on as this appliance has a fan thermo disc." Mendota's FV33i has "a five-minute delay before the blower comes on" in thermostat and smart modes. It carries two blowers rated at 190 CFM in free air, with six speeds on the remote, and the insert "is designed to operate with the blowers turned off or on."

How do I make a gas fireplace fan quieter?

Turn the fan down first. Heat & Glo fan kits have a rheostat "(like a dimmer switch on a light)", and its FAQ is short: "To reduce noise, turn the fan down." The Mendota and Regency remotes set fan speed in six steps.

Dust is the next suspect. Napoleon's maintenance steps include "If equipped with a blower, access the blower and clean using a soft brush and vacuum", and Mendota's yearly list starts with "Clean all lint and dust build-up around the control and blowers." Both sit inside the annual service that the makers assign to a technician, not the owner.

A fan that gets louder season after season has a fault. Regency names "increased fan noise" as a change to watch for, along with longer start-up and carbon build-up. An insert that rattles with the fan on may be sitting on the wrong bolts, as Mendota warns above.

A pilot whisper, and the sounds the manuals skip

Regency is the one maker here to describe how the pilot sounds: "While the pilot flame is on it can make a very slight 'whisper' sound." That is the soft, constant hiss of a small flame, and it should not change much from day to day.

Several sounds that owners ask about do not appear in any of these documents. No maker here describes a whoosh as the main burner lights, a roar from the flames, a whistle or a hum with the fan off. We are not going to guess at them. The rule that does exist is Regency's, so a new sound, or a familiar one that has grown louder, is a reason to stop and call a licensed gas technician.

For gas burners in general, the furnace noises page quotes furnace makers on the click and whoosh of a normal ignition and the bang of a delayed one. Those manuals were written for furnaces, though, and a fireplace burner is built differently.

A roaring or lifting flame needs a look

Watch the flame as well as listening to it. Regency's maintenance list reads "Visually check the flame of the burner periodically, making sure the flames are steady; not lifting or floating. If there is a problem, call a qualified service person."

Napoleon's table has a row for "Flames are very aggressive." Two of the causes it lists are "Door is ajar" and "Venting action is too great", and the remedies are to secure the door and to have the venting checked or restricted. Restricting a vent is installer work.

Color matters too. Heat & Glo calls blue flames normal in the first few minutes, but "If after the first 30 minutes of full burn you still have blue flames, an adjustment to your unit may be needed." Valor ties a dirty or black flame to "a blocked opening in the burner which can be cleaned by vacuuming it", and says to call the dealer if cleaning does not fix it.

When to stop and call a technician

Each row repeats a maker's printed instruction.

Yearly service is the baseline everywhere. Valor recommends service "before initial use, and at least once every year by a qualified service technician." Heat & Glo recommends "annual service of your fireplace by a qualified service person from your local dealer." Napoleon and Mendota print the same rule in their maintenance sections, and Majestic, which sells only through dealers, sends owners to a local dealer for service.

If you smell gas

Leave first, then call. The lighting label printed in the Grandview manual begins its gas warning by asking you to smell next to the floor, "because some gas is heavier than air and will settle on the floor."

If you do smell gas, the label lists: "Do not try to light any appliance." "Do not touch any electric switch, do not use any phone in your building." "Leave the building immediately." "Immediately call your gas supplier from a neighbours phone. Follow the gas supplier's instructions." "If you cannot reach your gas supplier, call the fire department." Napoleon, Mendota and Valor print the same warning on their manual covers. No sound from a fireplace matters more than that smell.

Other fireplace and heater noise pages

An electric fireplace makes a different set of sounds, from a fan heater, a turning flame rod and sometimes a crackle speaker, and the electric fireplace noises page covers them. The quietest electric fireplace guide ranks models by the figures Dimplex prints, something none of the gas fireplace documents quoted here offer.

For portable heaters, see space heater noises explained. The decibel chart puts household sounds side by side, and the quiet bedroom page helps if the fireplace shares a room with your bed.