What Is a Dual Fuel BBQ Grill? | Gas Speed Meets Charcoal Flavor

Dual fuel BBQ grills, sometimes called combo grills or multifuel grills, solve a classic backyard dilemma. You want the convenience of turning a knob and lighting a fire in seconds, but you also want that smoky charcoal taste that gas alone can’t deliver. A dual fuel grill gives you both in a single unit, typically with a gas burner system on one side and a charcoal tray or basket on the other, or with interchangeable components you can swap based on how you want to cook that day.

Understanding what these grills actually offer matters before you buy, since models vary widely in size, burner count, materials, and whether the unit is freestanding or built-in. This guide breaks down how they work, the key specs to compare, and the safety rules that apply to any mixed-fuel outdoor grill.

How a Dual Fuel BBQ Grill Works

A dual fuel grill gives you two independent cooking systems in one frame.

You can run either side alone or use both together for different zones. Cook burgers over gas when you’re short on time, then light the charcoal side for a low-and-slow brisket on the weekend. Some models let you use both fuels at once to combine the convenience of gas with smoke from a small charcoal fire. The flexibility is the entire point of the design.

One important distinction: a dual fuel BBQ grill is not the same as a dual-fuel kitchen range. That term refers to an indoor appliance combining gas cooktop burners with an electric oven. In outdoor grilling, “dual fuel” almost always means charcoal plus gas, not propane plus natural gas.

Key Specs to Compare on Combo Grills

Combo grills differ dramatically between models, so comparing specs matters before you spend. Pay attention to four numbers that define how the grill will perform.

• Cooking area: Total grilling surface, usually listed in square inches. A larger area means you can cook more food at once, but it also means more fuel to heat.
• Burner count and BTUs: More burners give you better heat zones. BTUs measure heat output; higher numbers generally mean faster preheat, though burner efficiency matters just as much.
• Construction: Look for stainless steel bodies and grates, which resist rust better than painted steel. Grade matters; 304 stainless steel is the higher-quality option.
• Configuration: Freestanding carts roll where you need them; built-in models install into an outdoor kitchen island and require more planning.

These two grills share the “dual fuel” label but cook very differently.

If you’re ready to compare top-rated models side by side, our tested dual fuel BBQ grill roundup walks through the leading contenders.

Safety Rules for Mixed-Fuel Grilling

Dual fuel grills combine the hazards of both gas and charcoal, so safety guidelines matter. Follow these rules every time you cook.

What Dual Fuel Grills Are Not

Two misconceptions trip up buyers. First, “dual fuel” in BBQ does not mean you connect both a propane tank and a natural gas line to the same appliance. Most dual fuel BBQ grills run on either charcoal or a single gas type, not two gas sources. Second, combo grills are not interchangeable in design. Some units fix the charcoal tray permanently beside the gas burners; others let you remove the charcoal components entirely when you only want gas. Read the specific model’s fuel type listing before assuming it works the way you expect.

The right dual fuel grill matches how you actually cook. If you grill twice a week after work, a model with a strong gas side and an optional charcoal tray keeps dinner fast on weeknights. If weekends are for slow barbecue, prioritize charcoal capacity and let the gas burners handle sides or quick reheats.