Can vented gas log sets be converted from natural gas to propane or vice versa?
Sometimes, but not reliably — many vented gas log sets are sold fuel-specific rather than field-convertible, so the safe path is often to choose the set built for your fuel. Where the manufacturer does offer an LP or NG conversion for a burner, a licensed tech swaps the orifice and pilot and sets pressure. Don't guess at it.
Log sets aren't like sealed fireplaces
A gas log set is a burner-and-logs assembly that drops into a fireplace, and how convertible it is depends entirely on the burner system. Some vented burners come with a manufacturer conversion provision — an orifice change and pressure setting swaps the fuel. Plenty of others are simply manufactured and sold as a natural-gas set or a propane set, full stop, with no listed conversion. Real Fyre's vented sets, for example, are specified by fuel; you match the set to the gas you have rather than assuming you can flip it later.
Vented means the orifice really matters
Remember what a vented set is: a tall, realistic yellow flame that's decorative-first, with most of the heat going up the chimney and the damper open. That flame is tuned by the burner orifice, and vented sets run a lot of gas to make it. Put a natural-gas set on propane and it over-fires into a sooty mess; put an LP set on natural gas and it looks starved and dull. If a conversion is offered for your burner, it's the same recipe as any gas conversion — correct orifice, correct pressure, licensed hands, verified flame — but the honest first question is whether your set was even designed to convert.
The simpler, cleaner route
Because so many vented log sets are fuel-specific, the smoothest path when you're in propane country — Fairview, Candler, Brevard, the cabins — is to select a set built for LP from the start, and we'll spec it that way. If you already own a set and want to know whether it can move fuels, give us the make and model; we'll tell you if a conversion exists or whether a fuel-correct set is the better call. For the bigger picture on vented versus ventless, our [vented vs ventless gas logs guide](/guides/vented-vs-ventless-gas-logs) breaks it down. Call (828) 545-0525.
Related questions
- Can ventless gas logs be converted between natural gas and propane?
- Are gas log lighters (starter pipes) allowed with propane?
- Do vented gas logs use a lot of gas?
- What is an orifice in a gas fireplace and why does it matter which fuel I use?
- How can I tell if a gas fireplace or log set is set up for natural gas or propane?
- How do I know if my house has natural gas or propane?
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