Your FAQs Answered

Gas fireplaces are a popular and efficient way to enjoy the warmth and ambiance of a fire with the flip of a switch. This article answers frequently asked questions about operation, maintenance, and safety.

How Does a Gas Fireplace Work?

Gas heating products—fireplaces, gas stoves, or gas logs— burn natural gas or liquid propane. These fuels flow through a connecting line to the fireplace. The ignition switch opens the line to let the gas flow over the pilot light and begin the burning process. The lit gas produces flames and heat to provide you a beautiful fire.

Will I Need a Chimney to Use This Fireplace?

Not all gas fireplaces need a chimney. They come in vent-free, direct-vent, and b-vent versions.

Manufacturers design vent-free products to burn cleanly and release minimal emissions. They do not require a chimney. Direct-vent and b-vent fireplaces, however, do need a chimney or other vent pipe to remove combustion byproducts.

“Combustion Byproducts” Sounds Unhealthy. Is It Safe to Have This in My House?

Proper installation and regular maintenance are the key to safely enjoying your gas-fueled fireplace. Sensors and safety switches monitor the fireplace and shut off the unit if they detect a problem. These extras help increase the product's reliability and enhance your peace of mind.

By design, vent-free models operate efficiently without a chimney. However, they may release small amounts of carbon monoxide and other byproducts. Be sure there is adequate ventilation in the room, and have your fireplace inspected regularly.

Can I Leave My Gas Fireplace on All Night?

Manufacturers recommend shutting off your fireplace at night. Even with safety features, overnight use could pose risks, such as overheating or reduced oxygen levels if using a vent-free model.

The pilot light, however, should remain lit during winter months on millivolt models. Leaving the pilot light on makes it easier to relight the burner and helps maintain warmth in the fireplace. Electronic ignition models will shut the pilot on and off with each use.

Is It Difficult to Light the Pilot?

Only millivolt models require manual ignition of the pilot light before the first use. To light the pilot, locate the control knob, usually marked with "Off," "Pilot," and "On." Turn the knob to "Pilot" while pressing down to release gas. Using a long lighter or built-in igniter, ignite the pilot flame while holding the knob down for 30 seconds, then release.

To turn off the pilot light, use the same gas control knob and set it to "Off." This shuts off the gas supply to the pilot light. To relight a pilot light, follow the same steps as lighting the pilot.

How Do You Start the Flame?

You can start enjoying a cozy fire by simply turning a knob, flipping a switch, or using your remote control. For millivolt models, after the pilot is lit, turn the control knob for the main burner to the "on" position. These steps will generally only be required once during a season for millivolt models with remote controls or wall switches. You can then use the designated button or switch to start the fireplace.

Can You Burn Wood in a Gas Fireplace?

No, the manufacturers did not design these fireplaces to burn wood. Burning wood could pose a safety risk, or your unit may be damaged by this unintended use. Gas logs can provide a real wood look if a wood-burning fireplace fits your decor.

If burning wood is important to you, certain gas fireplaces can be converted to wood-burning units. It may require significant modifications performed by a professional. Consult with your woodstovepro master hearth professional at info@woodstovepro.com to explore your options.

How Do You Clean the Glass Doors?

Make sure the glass is completely cool before cleaning. Use a soft cloth and a fireplace glass cleaner to remove soot and residue. Using the wrong product can cause damage to the glass coating on the inside of the glass on direct vent fireplaces. Avoid abrasive cleaners, as they can scratch the surface and obscure the view of your beautiful fire.

How Much Gas Does a Fireplace Use?

A gas fireplace uses approximately 20,000 to 60,000 BTUs per hour. This translates to approximately 0.2 to 0.6 therms of natural gas per hour or 1 to 2 gallons of propane. The rate of gas usage depends on variables like the size and settings of your fireplace.

Are Gas Fireplaces Efficient?

Most gas fireplaces are highly efficient, with direct vent models achieving up to 85% efficiency. They provide consistent heat with minimal energy loss. The rule of thumb is often the more efficient, the less realistic. Some vented logs are very inefficient but will appear quite realistic. Vent-free logs, however, are very efficient, nearly 100%, but aren’t nearly as realistic. 

Do Gas Fireplaces Need Electricity?

Millivolt gas fireplaces do not require electricity to operate, as they use a standing pilot or battery-powered ignition. Electronic ignition models, as well as models with fans or remote controls, may need electricity for those features. Most electronic ignition fireplaces have battery backups in case of power outages, but these systems won’t operate the blower or lights.

How Hot Will My Fireplace Get?

A gas fireplace can reach temperatures of 300°F to 1,000°F, depending on its design and settings. The glass front may also become extremely hot. You should keep pets and children from touching the fireplace while in use.

Regulations require manufacturers to include a screen front on direct-vent fireplaces to prevent severe burns. The units will still get hot enough to cause painful burns.

How Long Does a Gas Fireplace Last?

With proper maintenance, a gas fireplace can last 10 to 25 years, depending on the model and usage.

What is That Smell?

A gas fireplace can have an unusual smell for several reasons. It may be dust burning off, cleaning products, new paint curing (when newly installed), or a gas leak. You should consult a professional if you notice an odor that is new or concerning

Who Services Gas Fireplaces?

Certified fireplace technicians or HVAC professionals typically service gas fireplaces. Regular maintenance includes cleaning, inspection, and performance checks.

Other Questions?

If we didn't cover your question here, please get in touch with us at info@woodstovepro.com or 888-418-0005.