Natural Gas Log Sets

Natural gas logs connect to your home's utility gas line, so there is no tank to refill and the fire never runs out partway through an evening. This collection spans vented gas logs for a working wood-burning fireplace and vent-free gas logs that need no chimney, for a wood-burning fireplace or a certified vent-free firebox, with standing pilot, electronic ignition and remote control options across the range.

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Natural Gas Fireplace Logs for a Home on a Gas Line

A natural gas log set is a burner and a set of cast logs that connects to your home's gas line. It is a gas log set for an existing fireplace, so the firebox you have stays in place. Nearly every set here is also sold in propane. The fuel is a variant you pick at the order, and it has to match the gas at your meter.

Order Natural Gas, Because Most Sets Cannot Convert

The valve, regulator and orifice in a gas log burner are built for one fuel. Real Fyre's G10 and Monessen's Mojo vent-free manuals both state that field conversion is not permitted, so a natural gas set stays on natural gas. A few vented burners do switch with a kit ordered from the manufacturer, and Empire's vented Slope Glaze burner is one of them.

Vented or Vent-Free Depends on the Fireplace

Vented gas logs go into a working wood-burning fireplace and burn with the damper open, so the chimney carries the exhaust out. They give the larger, more wood-like flame, and much of their heat goes up the flue with it. Choose one when the fire is mostly for the look.
Vent-free gas logs need no chimney. They go into a masonry or factory-built wood-burning fireplace, where they run with the damper closed, or into a certified vent-free firebox framed into a wall that never had a fireplace. Real Fyre and Monessen approve their vent-free sets for those two places only, so a former direct vent gas fireplace or a homemade opening does not qualify. An oxygen depletion sensor pilot shuts the burner off if the room's oxygen starts to drop. Vent-free gas appliances are restricted or prohibited in some states and municipalities, California and parts of Massachusetts among them, so check your local code before you order.

What the Gas Line Has to Deliver

Natural gas reaches the house at low pressure, and the burner needs it inside a set window. Monessen's Mojo and Majestic's Stadium manuals call for at least 5 inches of water column at the valve inlet and a 3.5-inch manifold setting. An external regulator is needed only when the house line runs above half a PSI. Pipe that is too small or too long starves the burner, so have a licensed gas fitter size the line, connect it and check the pressure with the fire lit.

Read the Natural Gas Rating, Not the Headline Figure

The same set can carry a different BTU rating on each fuel. Real Fyre's 24-inch Contemporary vent-free glass set, for example, is rated 35,000 BTU on natural gas and 30,000 on propane. On a vent-free set that number decides two things: how much heat you get, and how large the room has to be to run it.

Explore Related Gas Logs

Looking for something else? Browse the rest of the gas log range:

Gas Fireplace Log Sets, every set in both fuels
Propane Gas Log Sets, for a home on a propane tank
Ventless Gas Logs With Remote, vent-free gas logs you control from the couch
Outdoor Gas Logs, sets rated for an outdoor fireplace

Frequently Asked Questions about Natural Gas Log Sets

Can a natural gas log set be converted to propane later?

Usually not. Real Fyre's G10 and Monessen's Mojo manuals both state that field conversion is not permitted, because the valve, regulator and orifice are built for one fuel. Some vented burners, such as Empire's Slope Glaze, can switch with a conversion kit ordered from the manufacturer. Otherwise, order the set in the fuel you have.

Do natural gas logs need to be vented?

It depends on the set. Vented natural gas logs need a working wood-burning fireplace with the damper open, so the chimney carries the exhaust out. Vent-free gas logs need no chimney and go in a wood-burning fireplace or a certified vent-free firebox, protected by an oxygen depletion sensor pilot. They are restricted or prohibited in some areas, including California and parts of Massachusetts.

Do I need a regulator for natural gas logs?

Only if your house line runs above half a PSI. In that case the Monessen Mojo and Majestic Stadium manuals call for an external regulator, bringing supply pressure down to about 10 inches of water column. Most homes supply less, and the burner's own valve regulates from there. A gas fitter can confirm your line pressure.

How much natural gas do gas logs use?

Divide the set's hourly BTU rating by about 1,037, the heat in a cubic foot of natural gas on the U.S. average. A set rated 35,000 BTU uses around 34 cubic feet, or 0.35 therms, per hour on high, and less when the flame is turned down. Check the rating on the natural gas variant, which can differ from the propane one.

How big does a room need to be for a vent-free natural gas log set?

A vent-free set must not go in a confined space. The National Fuel Gas Code, quoted in Real Fyre's manual, defines that as less than 50 cubic feet for every 1,000 BTU of all the gas appliances in the room. A 35,000 BTU set needs at least 1,750 cubic feet, about a 15 by 15 foot room with an 8 foot ceiling. Rooms joined by an opening with no door count toward the space.

Can I put natural gas logs in my wood-burning fireplace?

Yes, as long as a gas line can be run to the firebox. Vented gas logs are listed for installation in solid-fuel burning fireplaces and need the chimney and damper working. Vent-free gas logs go in a masonry fireplace, or a factory-built one whose maker approves vent-free logs, provided it meets the set's minimum firebox dimensions. Either way, a licensed gas fitter runs the line and its shut-off valve.