Buying advice

How to Choose a Built-In Gas Grill (2026 Buying Guide)

Updated October 10, 2026By Backyard Kitchen Guide Editorial TeamHow we research

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A built-in grill is a 10–15 year decision wrapped in stone. Get these seven choices right and the rest is details.

1. Size: match the household, not the ego

30–32 inches, 700–900 sq in: the sweet spot for families of 3–6. Our grill size recommender does the math for your household.
36–42 inches: for regular crowds of 10+. Costs more, needs a bigger island, burns more fuel.
Smaller than 30 inches only makes sense for compact patios — and at that point, question whether built-in beats a good freestanding grill.

2. BTU: enough, not maximum

Target roughly 150–200 BTU per square inch from the main burners. More than that buys faster preheat and harder sears; less means sluggish recovery when the grates are full. Ignore all-burner totals that include side and rear burners — compare main-burner BTU.

3. Materials: 304 stainless or walk away

For a permanent outdoor install, 304 stainless is non-negotiable — 430 will rust, especially near salt air. Check the spec sheet: some brands use 304 for the visible parts and 430 underneath. The cooking grids matter too: thick stainless rod grids (Napoleon’s 9mm) hold heat better than thin wire.

4. Burners: count and type

Four burners give you real zone control (sear zone + moderate zone + warming zone). Three works for simpler cooking. Cast stainless burners outlast stamped steel. Infrared main burners sear brilliantly but are finicky for everyday grilling — infrared is best as a dedicated sear or rear burner, not the whole grill.

5. Features worth paying for

Rear infrared rotisserie burner — if you will spit-roast monthly.
Interior lighting — you will grill after dark more than you think.
Heat zone separators (Blaze) — genuine versatility for multi-dish cooks.
Good ignition — flame-thrower or hot-surface ignition beats piezo clickers.

6. Fuel: decide before ordering

Natural gas is cheaper per BTU and never runs out; propane needs no gas line. Most premium heads come in both — but they are not convertible, so this decision is permanent. Read the full natural gas vs propane breakdown for installation costs and the breakeven math.

7. Warranty and support

A built-in grill can’t go back in the box easily. Favor brands with long body warranties (Blaze’s lifetime is the benchmark) and dealer networks that actually answer the phone. Register the warranty on day one.

The order of operations

Choose the grill head (start with our best built-in grills).
Get the cutout dimensions from the manual.
Design the island around those dimensions.
Run gas and electrical before the countertop goes on.
Drop in the grill last.

Skip step 3 at your peril — every installer has a story about the island cut for the wrong grill.

Frequently asked questions

What is the difference between 304 and 430 stainless steel?

304 stainless contains nickel and molybdenum, which resist rust and corrosion far better — critical for a grill that lives outside permanently. 430 is magnetic, cheaper, and will show surface rust sooner, especially near the coast. For a built-in, 304 is worth the premium.

Do I need an infrared burner?

Only if you sear steaks often or want rotisserie. Infrared burners run much hotter than standard burners and are excellent for crusts — but a hot standard burner with the lid down does 80% of the job. Don't pay for infrared you won't use.

Can I convert a propane grill to natural gas later?

Usually not easily — it requires different orifices and sometimes different valves, and doing it yourself can void the warranty. Order the fuel version you will actually use.