Properly Lighting a Gas Fireplace: Step-by-Step Guide

Gas fireplaces provide warmth and ambiance, making them a popular choice for many homeowners. However, knowing how to light a gas fireplace safely and correctly is essential. Some models feature an electric ignition, allowing users to turn them on with a remote or wall switch. Others require manual ignition using a control panel or a key. Below, we’ll outline how to light different types of gas fireplaces while prioritizing safety.

Safety Precautions Before Lighting a Gas Fireplace

Before starting, always follow essential safety guidelines. Gas fireplaces run on natural gas, and leaks can pose serious hazards. If you suspect a gas leak—characterized by a strong sulfur smell or hissing sounds—leave your home immediately and call 911. The Indiana Utility Regulatory Commission advises installing and regularly testing carbon monoxide detectors to ensure a safe environment.

Kevin Hayes, director of Centreline Fires in the U.K., emphasizes keeping flammable objects away from the fireplace. “Ensure the area is clear of any clutter like paper, decorations, or anything flammable before lighting,” he says.

How to Light a Gas Fireplace with a Control Panel

If your fireplace has a control panel, follow these steps for safe ignition:

Step 1: Open the Access Panel

Locate and remove the access panel, usually at the base of the unit. This panel covers the fireplace controls.

Step 2: Set the Control Knob to ‘Off’

Find the control knob labeled “Pilot,” “Off,” and “On.” Ensure it is set to “Off” before proceeding. Hayes warns, “Starting with the knob in the ‘Off’ position prevents unwanted gas flow.”

Step 3: Wait 5 Minutes and Open the Emergency Shut-off Valve

If the knob was not initially set to “Off,” wait at least five minutes before continuing. This allows any residual gas to dissipate, reducing the risk of a sudden ignition.

Step 4: Turn the Control Knob to ‘Pilot’ and Press the Ignition Button

Set the knob to “Pilot,” press it in, and hold it. This action allows gas to flow to the pilot light. While holding the knob, press the ignition button multiple times to generate a spark. If your fireplace lacks an ignition button, use a long fireplace lighter or match to ignite the flame manually.

Step 5: Hold the Knob for 30 Seconds and Switch It to ‘On’

Once the pilot flame remains steady, continue holding the control knob for 30–60 seconds to allow the thermocouple to heat up. Then, release the knob and turn it to “On.”

Step 6: Close the Access Panel

Replace the access panel and adjust the flame as desired. If the fireplace fails to stay lit, consult a professional to check for issues with the gas line or thermocouple.

How to Light a Gas Fireplace with a Key

If your fireplace has a circular slot near its base, it requires a key for ignition. Follow these steps:

Step 1: Remove the Glass Panel Cover

Detach the glass panel covering the fire chamber by releasing its latches. Ensure the panel is cool before handling it.

Step 2: Locate the Gas Valve and Insert the Key

Find the gas valve, typically near the base. Insert the key without turning it. Turning the key too early will release gas prematurely.

Step 3: Light the Burner and Turn the Key Counterclockwise

Hold a lit match or fireplace lighter near the burner while turning the key counterclockwise. The flame should ignite immediately. If necessary, seek assistance to avoid unsafe positioning.

Step 4: Replace the Glass Panel and Adjust the Flame

Once lit, reattach the glass panel. Use the key to adjust the flame height—turn counterclockwise to increase and clockwise to decrease.

FAQ About Lighting a Gas Fireplace

Q: Should a gas fireplace pilot light stay on year-round?

Keeping the pilot light on year-round has advantages, such as preventing moisture buildup and deterring animals from nesting in the vent. However, it may slightly increase utility costs and raise indoor temperatures during summer.

Q: Do fireplace pilot lights function like water heater pilot lights?

Yes, both systems use a small flame to ignite a larger burner. However, while water heaters activate automatically when needed, gas fireplaces typically require manual operation.

Q: Can you light a pilot light with a match?

Yes, if your fireplace lacks an electronic ignition, you can use a long match or fireplace lighter. Hold the “Pilot” knob down to release gas while carefully igniting the pilot burner.

By following these steps, you can safely and efficiently light your gas fireplace, ensuring warmth and comfort in your home.