Bestwinterproducts.com is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more

How to Turn Off a Gas Fireplace and Pilot Light

Prime for Young Adults: check your eligibility on Amazon

A warm evening sets in, the room starts feeling like a sauna, and the hearth is still throwing heavy heat. To put out the fire right now, flip the wall switch down or tap the power button on the handheld remote. If those are missing or unresponsive, fold down the metal screen at the bottom and slide the rocker switch to off. The main flames will disappear right away.

The next step depends on whether you just want the room to cool down or need to shut the unit off completely for the summer. Many models keep a pilot light (a tiny starter flame that burns constantly) active even when the logs are dark, while newer units use an electronic spark that stays silent. Some older setups also feature a separate brass key valve set into the floor. Here is how to handle each shutoff method safely without any guesswork.

Shut off the main burner switch on your wall, remote, or lower panel

Turning off the daily flames on a gas fireplace takes only a few seconds. When you want the room heat and the large yellow flames to stop, you do not need to cut off the gas supply to the entire unit. You only need to shut off the main burner while leaving the small starter flame, known as the pilot light, lit and ready for next time.

Most modern living rooms use one of three convenient control setups to operate the fire. Check these three spots in order to shut down the main flames right away:

  1. Flip the wall switch down. Walk over to the wall next to your fireplace surround. Look for a standard toggle switch that looks just like a regular light switch, or check for a small digital wall thermostat. Flip the toggle switch down to the OFF position, or turn the dial on the thermostat down below room temperature.
  2. Press the power button on your handheld remote. If your unit uses a wireless remote control, press the red or black power button once. You should hear a faint, crisp click coming from underneath the firebox. That sound is the internal valve closing, and the main yellow flames should disappear within two to three seconds.
  3. Slide the switch behind the bottom screen. If the remote is missing or the wall switch does not respond, open the metal louvers or mesh screen at the bottom of the firebox. Look inside for a small plastic rocker switch or a battery receiver box. Slide or rock this switch from ON to the OFF position.

These switches work by controlling a millivolt system, which is a self-powered low-voltage control circuit that generates tiny amounts of electricity using heat from the small starter flame. When you turn the switch to OFF, you break that tiny circuit. The safety valve instantly springs shut and blocks gas from reaching the main burner tray, but it allows a tiny trickle of fuel to keep the small starter flame alive.

Once the main fire goes out, keep your hands off the front viewing area. The ceramic logs and front glass stay hot enough to cause severe skin burns for at least 30 to 45 minutes after the fire stops. Give the entire firebox plenty of time to vent heat into the room before you clean the hearth or touch any surrounding metal trims.

Turn the control valve knob completely to off to put out the pilot light

When warm weather arrives in spring or you plan to leave your home empty for a long vacation, you should extinguish the small starter flame completely. Shutting down this small flame stops all gas consumption inside the fireplace and prevents unnecessary heat from warming your room during summer months. Extinguishing the flame requires turning the control valve, which is the gas knob behind the lower access panel.

Follow these step-by-step instructions to extinguish the pilot light safely without damaging the valve mechanism:

  1. Let the entire unit cool down. Never reach into the lower compartment while the main burner is running or immediately after it shuts off. Wait half an hour until the metal access louvers feel cool to the touch.
  2. Open the lower access panel. Most fireplace fronts have a hinged metal grille at the base that swings downward like an oven door. Other designs use a decorative metal panel that lifts up slightly and pulls straight off. Set this screen aside carefully so you do not scratch the hearth floor.
  3. Locate the main gas control knob. Shine a flashlight into the dark compartment underneath the firebox floor. Look for a round plastic or metal knob clearly stamped with three words: ON, PILOT, and OFF. You will also see a small fixed indicator notch or arrow stamped into the metal body of the valve housing.
  4. Rotate the knob clockwise to PILOT. If your fireplace was recently active, the knob will be pointing directly at the ON position. Turn the knob clockwise until the word PILOT lines up with the indicator mark. It should turn smoothly without requiring much effort.
  5. Push the knob inward and turn to OFF. Gas fireplace valves feature a built-in safety notch to prevent accidental shutoffs. To move past the PILOT position, push the round knob straight in toward the valve body by about an eighth of an inch, then turn it clockwise until the indicator points directly to OFF. Release the knob so it pops back out.
  6. Watch the small starter flame extinguish. Peek into the logs near the bottom of the firebox where the small blue pilot flame usually burns. Within five to ten seconds after turning the knob to OFF, the small flame will shrink and vanish.

Inside the burner assembly sits a thermopile, which is a heat sensor that lets gas flow only when heated by the starter flame. When you turn the knob to OFF, fuel stops reaching the pilot assembly. As the sensor cools down over the next minute, it automatically locks the internal safety seals, guaranteeing that raw gas cannot seep into your home even if someone bumps the wall switch later.

Close the gas line at your wall or floor key valve for complete safety

Many homes with gas log sets or built-in fireplaces feature an extra manual shutoff valve installed outside the firebox. This valve provides a physical barrier in the copper or iron pipe feeding fuel from your main gas meter or propane tank. It is operated using a key valve, which is a metal floor or wall socket turned with a removable handle.

Look around the perimeter of your fireplace to find this valve socket. Most home builders install it on the floor within three feet of the hearth, or mount it flush against the drywall or stone surround at waist height. The socket looks like a round brass or chrome trim plate with a small opening in the middle that fits a square metal rod.

To shut off the gas supply completely using your valve key, follow these clear steps:

  • Insert the metal key into the socket hole. Slide the long stem of your fireplace key into the opening until you feel the notched end seat firmly onto the square brass valve stem inside the wall or floor.
  • Rotate the key firmly clockwise. Turn the handle of the key to the right. If your gas line uses a quarter-turn ball valve, the key will turn ninety degrees and come to a solid stop perpendicular to the pipe. If your system uses a threaded globe valve, you will need several complete clockwise rotations until the handle tightens down firmly.
  • Stop as soon as you feel firm resistance. Snug the valve closed with hand pressure, but avoid forcing it with extra tools. Cranking down on the key with pliers can strip the soft brass stem or damage the internal valve seals.
  • Store the valve key in a safe, known spot. Hang the key on a hook near the fireplace or store it inside a nearby mantel drawer. Keeping it close ensures you can quickly shut off fuel in an urgent situation or turn it back on when winter returns.

Shutting off the line at the key valve gives you total peace of mind whenever you perform seasonal maintenance or leave town. If your fireplace is built into an open masonry chimney rather than a sealed direct-vent glass box, this is also the right time to verify that your chimney flue is sealed. Learning how to close your fireplace damper prevents expensive indoor air conditioning from escaping up the flue all summer long.

Decide whether to keep your pilot light lit or extinguish it for warm weather

Homeowners often wonder whether leaving a small starter flame burning through spring and summer poses a safety hazard or wastes too much money. Both choices are safe, but each option comes with distinct trade-offs regarding household comfort, fuel costs, and fall maintenance.

Leaving the small starter flame burning year-round provides several practical benefits. The continuous tiny flame creates a steady, gentle warmth that prevents humidity and damp air from collecting inside the firebox. This dry environment protects delicate metal burner tubes, ignition wires, and pilot brackets from rusting. Spiders and small insects also dislike the warmth, which keeps them from spinning webs inside the tiny gas ports during long periods of disuse. Also, when an unseasonably cold spring evening arrives, you can start a fire instantly with your remote control without crawling on the floor with a lighter.

The downside of leaving the pilot burning is steady, passive heat and minor fuel use. A small starter flame burns a continuous trickle of gas, adding a modest amount to your monthly utility bill over four or five months of warm weather. That continuous flame also puts off a small amount of heat that can warm up a small living room or basement during peak summer heat waves. Over several months, the sulfur and trace minerals naturally present in burning fuel can create a cloudy white haze on the inside of the front glass door, requiring you to clean the glass before winter arrives.

Shutting the small flame down completely eliminates that heat source and cuts unnecessary fuel use. Your living room stays slightly cooler, your air conditioner does not have to fight the extra warmth, and the interior glass stays clearer. The only real drawback comes when autumn arrives: you must get down on the floor, open the bottom panel, hold the valve knob down manually, and click the igniter repeatedly until the pilot flame catches and heats the sensor.

If you live in a region with hot summers and high humidity, turning the pilot knob to OFF in late spring is usually the best approach. If your fireplace sits in a cool, damp basement where moisture tends to rust metal parts, leaving the flame burning can keep the components dry and functional.

Follow safe steps immediately if the fire stays lit or you smell gas

Gas appliances are engineered with layered mechanical safeguards, but hardware can occasionally stick or fail. Knowing how to react if the fire refuses to turn off or if you detect an unusual odor keeps your family and your home safe.

If you flip your wall switch or press the remote button and the large yellow flames continue burning, do not panic. Follow this checklist to cut the fire manually:

  • Bypass the remote and wall controls. Wall switches and remote receivers can short out or suffer from corroded low-voltage wiring. Open the lower access louver, locate the manual rocker switch on the fireplace body, and flip it firmly to OFF.
  • Shut off the main control valve. If the rocker switch fails to kill the flames, the internal solenoid valve could be mechanically stuck. Reach down to the control valve knob, push it inward, and turn it clockwise directly to the OFF position. This cuts the physical gas passage inside the valve.
  • Close the external key valve. If the knob on the valve is seized or will not turn, immediately insert your fireplace key into the floor or wall socket and turn it clockwise until it stops. This cuts fuel before it ever enters the appliance.

Knowing what to do if you smell gas is equally critical. Utility providers mix a harmless chemical called mercaptan into natural gas and propane supplies. It creates a pungent, unmistakable smell that resembles rotten eggs or boiled cabbage. A tiny, brief whiff right as a pilot light goes out can happen as the flame dies, but that smell should dissipate in less than a minute.

If you notice a continuous or strong smell of gas, hear a distinct hissing sound from the pipes, or smell fuel while the entire fireplace is supposed to be off, treat the situation as an emergency. Follow these critical safety rules without hesitation:

  1. Do not turn any household light switches on or off, and do not unplug any appliances. Flipping an electrical switch creates a tiny internal spark that can ignite accumulated gas.
  2. Do not strike matches, light candles, or smoke anywhere near the home.
  3. Do not use your home phone or a cell phone inside the house.
  4. Evacuate all household members and pets through the nearest door immediately. Leave the door open behind you to help fresh air dilute the fuel inside.
  5. Once you are safely standing outside and away from the building, use your mobile phone to call your local gas utility company or dial 911 for emergency assistance.
  6. Stay outside the building until a qualified professional checks the gas lines with specialized sensors and explicitly confirms it is safe to re-enter.

Choose the right replacement switch, remote, or valve key if your controls stick

When a gas fireplace refuses to turn off smoothly, worn-out control hardware is almost always the cause. Remote receivers get baked by hearth heat over several seasons, manual rocker switches gather dust behind lower panels, and valve keys frequently get misplaced during moves or seasonal cleanings. Upgrading or replacing these simple control parts restores quick, reliable control over your fire.

Before purchasing replacement switches, wireless remotes, or manual keys, check a few key details on your existing fireplace setup to ensure proper fit:

  • Verify your ignition system type. Check your appliance manual or look beneath the firebox floor to see whether you have a millivolt valve or an electronic intermittent pilot ignition. Standard low-voltage millivolt systems run without household electrical power, requiring remote receivers and wall switches specifically designed to handle dry-contact low-voltage circuits.
  • Confirm connection terminals. Most manual wall switches and remote receiver boxes wire directly into two specific screw terminals on the main gas valve block. Inspect the valve to make sure the wiring terminals are accessible, clean, and free of corrosion before connecting new hardware.
  • Measure your valve stem size. If you need a replacement gas valve key for a floor or wall socket, check the internal stem diameter. Most residential fireplace valves use either a quarter-inch or five-sixteenths-inch square valve stem. Selecting a universal key that accommodates both sizes eliminates guesswork.
  • Select the right key shaft length. Measure the distance from the finished surface of your wall or floor down to the actual valve body inside the recess. Keys range from short three-inch models up to long shafts reaching eight to twelve inches, which are necessary when valves sit deep inside thick masonry or floor joists.
  • Consider valve knob extensions. If your control valve sits deep in the back corner of a cramped lower firebox compartment, turning the knob by hand can be difficult. A notched extension handle snaps directly over the round valve knob, giving you extra reach and smooth turning leverage without scraping your knuckles on sharp metal edges.

1
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    9.6
  • Brand
    OXDFK
2
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    9.6
  • Brand
    HPC
3
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    9.6
  • Brand
    RCK Sales
4
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    9.4
  • Brand
    DIGITEN
5
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    9.2
  • Brand
    onlyfire
6
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    9.2
  • Brand
    Bxmgr
7
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    8.6
  • Brand
    Durablow
8
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    8.6
  • Brand
    Durablow
9
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    8.6
  • Brand
    Durablow
10
  • BWP Score

    BWP Score is a ranking system developed by Bestwinterproducts.com. BWP score has no relationship or impact from any manufacturers or sales agent websites. Learn more

    8.4
  • Brand
    The-new-style

Last update on 2026-10-01 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

FAQs

Is it normal to hear a soft pop when the gas fireplace turns off?

Yes, hearing a soft pop or dull thud right as the fire goes out is completely normal. That sound occurs when the gas valve snaps shut and the last bit of fuel inside the burner tube burns away in a split second. As long as the sound is faint and the flame goes completely dark, the fireplace is operating as intended.

Can I leave the glass barrier off after turning off my gas fireplace?

No, you should never leave the front glass panel off a direct-vent gas fireplace. The heavy glass creates an airtight seal that forces toxic combustion fumes up the vent pipe while drawing fresh combustion air from outside. Leaving the glass unlatched allows room air to disrupt the burner balance and could let exhaust fumes enter your living space if the unit is turned back on.

Will a gas fireplace turn off automatically if my home loses electrical power?

It depends on how your specific fireplace produces ignition. Standard millivolt systems generate their own tiny electrical charge from the pilot flame, meaning the fire will keep burning right through a power outage until you flip the switch to OFF. Modern electronic ignition units that plug into a household outlet will shut off during a blackout unless they have an active backup battery pack installed in the lower receiver.

How long does the glass stay hot after shutting off the flames?

The front glass panel remains hot enough to cause serious skin burns for at least thirty to forty-five minutes after the fire goes out. Ceramic logs, heavy metal grates, and decorative surrounds also hold residual heat long after the flames vanish. Always keep young children and pets away from the hearth area until the metal barrier feels completely cool to the touch.

4.7
3 ratings
Michelle Collins
WRITTEN BY
Michelle Collins
Michelle Collins, a female editor based in Boston, is a beacon for affordability in winter and outdoor products. With a decade of experience, she encourages readers to make smart, budget-friendly choices.