Same Grill, Different Fuel
Most gas grill models are available in both propane (LP) and natural gas (NG) versions. The grills themselves are nearly identical — the difference is in the burner orifices (natural gas requires larger openings due to lower pressure) and the connection type. Performance, flavor, and cooking quality are functionally the same between the two fuel types.
The real decision comes down to installation requirements, ongoing costs, portability needs, and whether you have access to a natural gas line.
Key Differences
| Factor | Propane (LP) | Natural Gas (NG) |
|---|---|---|
| Installation | None — connect tank and grill | Requires gas line run by licensed plumber |
| Upfront cost | Grill + tank (~$30-50 for initial tank) | Grill + installation ($200-800 for gas line) |
| Fuel cost | $15-25 per tank refill (18-20 hrs of cooking) | $0.50-1.50 per hour of cooking |
| Convenience | Requires tank refills/exchanges | Unlimited fuel — never runs out |
| Portability | Can be moved anywhere | Fixed to gas line location |
| Heat output (BTU) | Slightly higher per burner | Slightly lower per burner |
| Flavor | Identical | Identical |
When Propane Makes More Sense
Propane is the better choice if you don't have an existing natural gas line near your grilling area, if you rent your home (no permanent modifications), if you want to move the grill around your yard or take it to different locations, or if you grill infrequently enough that running a gas line doesn't justify the installation cost.
Propane is also the only option for portable and camping grills. If you want one fuel setup that works at home and on the road, propane is it.
When Natural Gas Makes More Sense
Natural gas is the better choice if you already have a gas line accessible to your patio or can easily extend one, if you grill frequently (three or more times per week), if you hate the hassle of monitoring tank levels and making refill trips, or if you plan to install a permanent outdoor kitchen.
The break-even point — where natural gas installation costs are offset by lower fuel costs — depends on how often you grill. Frequent grillers (3-5 times per week) typically break even within 1-2 years. Occasional grillers (once a week or less) may never recoup the installation investment.
Conversion kits: Never convert a propane grill to natural gas (or vice versa) using a third-party conversion kit unless it's officially offered by the grill manufacturer. Improper conversion can cause dangerous gas leaks, uneven flame, and void your warranty. Most major manufacturers sell factory-authorized conversion kits for their popular models.
Our Top Picks
Weber Spirit E-325 (Propane)
$$Weber's popular three-burner in propane configuration. Portable, no installation required, and works anywhere you can set up a grill.
Weber Spirit E-325 (Natural Gas)
$$Same great grill connected to your home gas line. Unlimited fuel, lower cost per cook, and never running out mid-session.
Frequently Asked Questions
Is propane or natural gas hotter?
Propane produces slightly more BTUs per unit volume than natural gas. However, manufacturers adjust burner orifice sizes for each fuel type so that the actual cooking performance is nearly identical. You won't notice a difference in grilling results between the two.
Can I convert my propane grill to natural gas?
Only if the manufacturer offers an official conversion kit for your specific model. Never use generic or third-party conversion kits — the orifice sizes, regulators, and fittings must be precisely matched to your grill for safe operation. Improper conversion creates a serious gas leak and fire hazard.