Taylor HarrisonA natural gas fire pit is a permanently plumbed outdoor fire feature connected to a home's gas line, delivering continuous fuel so the flame never runs out the way it does with propane tanks. Homeowners choose them for convenience, lower running costs, and the fact that they never require refilling a tank mid gathering.
How a Natural Gas Fire Pit Differs From Propane
The core difference between a natural gas fire pit and a propane version comes down to the fuel source and how it reaches the burner. Propane fire pits draw from a portable tank, which means periodic swaps and the occasional dead tank at the worst possible moment. Natural gas units instead tap into a home's existing gas line, usually run underground from the meter to the pit location by a licensed plumber.
That plumbed connection changes the economics and the placement rules. Because there is no tank to move, a natural gas fire pit is inherently a fixed, permanent installation rather than something you can drag to a new spot on a whim. In exchange, owners get a fuel that costs meaningfully less per hour of burn time than propane, and they never have to think about running out during a dinner party.
Natural gas also burns slightly differently than propane. It has a lower heat output per cubic foot, so a natural gas fire pit typically needs a larger burner or orifice to produce a flame comparable in size and warmth to a propane unit running the same burner pan. Manufacturers account for this by selling dedicated natural gas orifices and jets, and most quality fire pit burners are sold as convertible between the two fuels with the correct parts swapped in.
What Installation Actually Involves
Installing a natural gas fire pit is not a weekend do it yourself project in most jurisdictions, because it involves running a gas line and often requires a permit and inspection. The typical process looks like this:
- A licensed plumber or gas fitter determines the best route from the existing gas meter or line to the planned fire pit location.
- A trench is dug (often by hand near existing landscaping, or with a small trencher for longer runs) to bury the line at the depth required by local code.
- Black steel pipe or approved flexible gas line is laid, connected, and pressure tested for leaks before burial.
- A shutoff valve is installed at the fire pit end, positioned so it is accessible but not a tripping hazard.
- The fire pit structure itself, whether a prefabricated kit or a custom masonry surround, is built or set in place over the connection point.
- The burner, ignition system, and fire glass or lava rock are installed, and the whole system is tested for proper flame height and even gas distribution.
- A final inspection, where required, confirms the installation meets local gas and building codes before regular use begins.
Costs vary widely depending on how far the gas line has to travel and whether the surrounding hardscape needs to be torn up and replaced. A short run from a nearby meter to a patio a few feet away is far cheaper than trenching across a yard, through concrete, or under a deck.
Choosing the Right Size and Burner
Sizing a natural gas fire pit correctly depends on the space it will occupy and how it will be used. Larger burner pans and higher BTU ratings produce more heat and a taller flame, which matters more for a fire pit meant to be a gathering focal point in a large backyard than for a small patio feature meant mainly for ambiance.
| Fire Pit Style | Typical BTU Range | Best For |
|---|---|---|
| Compact tabletop or bowl | 30,000 to 50,000 | Small patios, ambiance over heat |
| Standard round or square pit | 50,000 to 90,000 | Average backyard seating areas |
| Large linear or custom masonry | 90,000 to 150,000+ | Big patios, entertaining spaces, cooler climates |
Beyond BTU output, the burner material matters for longevity. Stainless steel burners resist corrosion far better than mild steel, which is important given that a natural gas fire pit is a permanent fixture expected to last many years outdoors through rain, humidity, and temperature swings.
Safety, Weather Exposure, and Maintenance
Because a natural gas fire pit sits outdoors year round, weather resistance is a real design consideration rather than an afterthought. Rain and snow accumulation around the burner and ignition components can cause problems if the unit is not built or covered properly, which is why most manufacturers recommend a fitted cover when the pit is not in use and periodic checks of the burner ports for debris, insects, or corrosion.
Routine maintenance is fairly light. Owners should periodically inspect the gas connection for leaks using a simple soap and water test, keep the burner pan free of leaves and debris, and check that fire glass or lava rock has not shifted to block ports. Because the fuel supply is a fixed line rather than a swappable tank, any suspected leak in the buried line itself should be handled by a licensed professional rather than a homeowner, both for safety and to stay compliant with local gas codes.
Frequently Asked Questions
What is a gas fire pit?
A gas fire pit is an outdoor fire feature that burns propane or natural gas through a burner system instead of burning wood, producing a controllable flame without smoke, sparks, or the need to tend a wood fire.
Can a gas fire pit get wet?
Light rain on the exterior surround generally causes no harm, but water pooling in the burner pan or reaching the ignition components can cause corrosion or malfunction, which is why a fitted cover is recommended when the pit is not in use.
How to light a gas fire pit?
Most models use either a push button electronic igniter or a manual match lit pilot; you open the gas valve, activate the igniter or hold a lit match near the burner while briefly pressing the ignition button, and the flame should catch across the burner ports within a few seconds.
How does a gas fire pit work?
Gas flows from the supply line through a control valve to a burner pan filled with lava rock, fire glass, or ceramic logs, and an igniter sparks the gas as it exits the burner ports, producing a steady, adjustable flame fed continuously by the fuel line.
What is natural gas fire pit?
A natural gas fire pit is a fire pit permanently connected to a home's natural gas line rather than a portable propane tank, offering continuous fuel supply and lower operating cost in exchange for a fixed installation location.
