A built-in BBQ grill can become the centerpiece of an outdoor kitchen. But choosing the right grill takes more than picking a brand or finding the model with the highest BTU rating. Size, fuel type, burner configuration, construction and the features you’ll actually use all matter.
Whether you’re building a new outdoor kitchen or replacing an existing grill, making a few decisions before you shop can help you find the right grill for your space, cooking style and budget.
Start Here: The 5-Step Built-In Grill Buying Plan
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Measure Your Space
Know the available space and check the manufacturer’s exact cutout dimensions before buying. -
Choose Your Fuel Type
Determine whether your outdoor kitchen will use natural gas or liquid propane. -
Decide How Much Cooking Space You Need
Think about how many people you normally cook for and how often you entertain. -
Compare the Cooking System
Look at the burner layout, cooking zones, heat distribution and searing capabilities—not just the total BTU rating. -
Choose the Features You’ll Actually Use
Rotisserie systems, infrared searing, interior lighting and side burners can be valuable, but only if they match the way you cook.
NAL TIP: If you’re building a new outdoor kitchen, choose the grill before the countertop and cabinet openings are finalized. The grill’s exact installation requirements should help determine the design of the outdoor kitchen—not the other way around.
Measure Twice, Buy Once
One of the easiest mistakes to make when shopping for a built-in grill is assuming that the advertised grill width is the same as the opening required in your outdoor kitchen.
It isn’t necessarily.
A grill described as a 36-inch model may require a cutout that is narrower than 36 inches, and two grills with the same advertised width can require different openings.
That’s why the manufacturer’s installation specifications—not just the advertised grill size—should determine how your outdoor kitchen is built.
Before You Buy, Verify These Measurements
- Cutout width — the required side-to-side opening
- Cutout depth — the space required from front to back
- Cutout height — the vertical opening required for installation
- Clearances — required spacing from walls and combustible materials
- Ventilation requirements — especially important for enclosed outdoor islands
- Gas connection location — confirm natural gas or propane requirements
- Electrical requirements — some grills need power for ignition, lighting, rotisserie systems or other features
WATCH OUT: Replacing an existing built-in grill? Don’t assume another grill with the same advertised width will fit the existing opening. Compare the exact manufacturer’s cutout specifications before purchasing.
What Size Built-In Grill Do You Need?
Built-in grills are commonly described by their overall width, such as 30, 36 or 42 inches. But bigger is not automatically better.
The right grill size depends on how many people you normally cook for, how often you entertain, how many different foods you want to cook at the same time and how much space is available in your outdoor kitchen.
| Approximate Grill Width | Best For |
|---|---|
| Around 30 inches | Smaller outdoor kitchens and everyday family cooking |
| Around 36 inches | Family cooking plus regular entertaining |
| Around 42 inches | Larger gatherings and multiple cooking zones |
| 50 inches and larger | Large outdoor kitchens and serious outdoor cooking |
These sizes are only starting points. Cooking-surface area, burner layout and the way you cook can be more important than the grill’s exterior width.
NAL TIP: Don’t choose a larger grill simply because it fits. A well-designed grill that matches the way you normally cook may be a better choice than the largest model your outdoor kitchen can accommodate.
Read our complete Built-In Grill Size Guide →
Think About Cooking Zones, Not Just Square Inches
If you regularly cook several foods at once, look for a grill with multiple independently controlled burners. This lets you create different temperature zones—for example, high heat for steaks on one side and lower heat for vegetables or slower cooking on the other.
A larger cooking surface can be useful, but having control over that space is just as important.
Natural Gas vs. Propane: Which Is Right for You?
One of the most important decisions to make before buying a built-in grill is how it will be fueled.
Most built-in gas grills are sold in either natural gas or liquid propane configurations. The best choice depends largely on what fuel source is available where the outdoor kitchen will be installed.
| Fuel Type | Best For |
|---|---|
| Natural Gas | Permanent outdoor kitchens where a natural-gas connection is already available or can be installed |
|
Liquid Propane |
Outdoor kitchens where natural gas is not available or where propane provides more installation flexibility |
Natural Gas
A natural-gas grill connects directly to the home’s gas supply. For homeowners who already have natural gas available near the outdoor kitchen, this can be extremely convenient because there is no propane tank to refill or exchange.
If a gas line is not already available, professional installation may be required.
Liquid Propane
Propane can be a practical choice when natural gas is unavailable or when installing a permanent gas line would be difficult. Most propane grills use a refillable LP tank or another approved propane supply.
The tradeoff is that the fuel supply must be monitored and refilled or replaced when needed.
WATCH OUT: Do not assume a natural-gas grill and propane grill are interchangeable. Always verify the exact fuel configuration of the model you are buying and follow the manufacturer’s installation requirements.
Read our complete Natural Gas vs. Propane Grill Guide →
Don’t Judge a Grill by BTUs Alone
BTU ratings are one of the easiest grill specifications to compare, but a higher BTU number does not automatically mean better cooking performance.
A grill’s performance depends on how efficiently it creates, distributes and retains heat across the cooking surface. Burner design, cooking grates, heat-distribution systems, firebox construction and temperature control all play a role.
A well-designed grill with a lower total BTU rating may cook more evenly and efficiently than a grill with a larger BTU number but weaker heat management.
Look at the Complete Cooking System
When comparing grills, look beyond the total BTU rating and consider:
- Burner design — how heat is produced and controlled
- Heat distribution — how evenly heat reaches the cooking surface
- Cooking grates — their material, weight and heat retention
- Firebox construction — how well the grill holds and manages heat
- Independent cooking zones — how much control you have over different areas of the grill
NAL TIP: Use BTUs as one specification—not as the deciding factor. The best grill is the one that delivers consistent heat and gives you the control you need for the way you cook.
Which Grill Features Are Actually Worth Paying For?
Built-in grills can come with a long list of premium features, but more features do not automatically make a grill a better value.
The best approach is to think about how you actually cook. A feature you use every weekend may be worth paying for. A feature you rarely use may add cost without adding much value.
Infrared Searing
Infrared searing systems are designed to produce extremely high heat, making them especially useful for steaks, chops and other foods where you want to develop a crust quickly.
If high-heat searing is an important part of the way you cook, this can be a feature worth considering.
Rotisserie
A rotisserie can expand what you can cook on the grill and is especially useful for whole chickens, roasts and other larger cuts.
Some premium grills include a dedicated rear rotisserie burner, which helps provide more even heat during rotisserie cooking.
Interior Grill Lighting
Interior lighting may sound like a luxury feature, but it can be very practical if you frequently cook after sunset.
Good lighting makes it easier to monitor food without relying entirely on patio or landscape lighting.
Multiple Cooking Zones
Independently controlled burners allow you to create different temperature zones across the grill.
This can be especially useful when you are cooking several foods at once—for example, high heat for steaks on one side and lower heat for vegetables or slower cooking on the other.
Side Burners
A side burner gives you another cooking surface for sauces, side dishes, boiling water or other tasks that would otherwise require going back inside to the kitchen.
If you want your outdoor kitchen to function as a complete cooking space, a side burner can be especially useful.
NAL TIP: The question is not whether a feature sounds impressive. The question is whether you will actually use it.
Read our complete Built-In Grill Features Guide →
What Makes One Grill More Expensive Than Another?
Two built-in grills can look very similar from a few feet away but have very different construction, cooking systems and long-term durability.
Premium grill pricing may reflect heavier materials, more substantial burners, better heat retention, upgraded cooking grates, stronger hinges and hardware, more precise controls and additional cooking features.
When comparing grills, look beyond the exterior finish and consider the components that actually affect cooking performance and durability.
- Burners
- Cooking grates
- Firebox construction
- Heat-distribution system
- Hood construction
- Hinges and handles
- Knobs and controls
- Warranty coverage
VALUE TIP: A more expensive grill is not automatically the right grill, but understanding what you are paying for makes it much easier to compare value.
A Better Grill May Be Closer to Your Budget Than You Think
When shopping for a built-in grill, it is easy to compare only the original retail prices of new models.
But that can leave out one of the biggest opportunities available to value-focused shoppers: open-box and clearance inventory.
Depending on what is available, the same budget that buys a standard new grill may also put a premium grill with heavier construction, upgraded burners, infrared searing, rotisserie capability or other higher-end features within reach.
That is one of the advantages of shopping at National Appliance Liquidators. Instead of looking only at the original price category of a grill, you can compare what your budget actually buys today.
Compare What You’re Getting, Not Just the Discount
A larger discount does not automatically mean a better purchase. When comparing a new grill with an open-box or clearance model, look at the complete package:
- Construction quality
- Burner system
- Cooking surface
- Premium features
- Fuel type
- Condition
- Warranty coverage
- Current price
A premium open-box grill can sometimes deliver more cooking capability and stronger construction at a price closer to a standard new model.
VALUE TIP: Don’t compare discounts. Compare what you are getting for the money.
Open-Box Does Not Mean “One Size Fits All”
Open-box and clearance grills should be evaluated individually. Condition, included accessories, warranty coverage and cosmetic appearance can vary from one unit to another.
Before purchasing, confirm the exact model, fuel type, dimensions, condition and installation requirements for the specific grill you are considering.
NAL TIP: Because open-box and clearance inventory can be limited to a single unit, availability can change quickly.
Read our complete Open-Box Luxury Grill Buying Guide →
Think Beyond the Grill
If you are planning a complete outdoor kitchen, the grill is only one part of the project.
Thinking about the entire space before construction begins can help you avoid expensive changes later.
- Side burners
- Outdoor refrigeration
- Beverage centers
- Ice makers
- Pizza ovens
- Storage cabinets
- Electrical connections
- Gas lines
- Plumbing
- Counter and prep space
Planning these elements together helps make the finished outdoor kitchen more functional and can make installation much easier.
NAL TIP: If you expect to add outdoor refrigeration, burners or other appliances later, plan the utilities and cabinet space for them before the outdoor kitchen is built.
Before You Buy: Your Built-In Grill Checklist
Before purchasing a built-in grill, make sure you can answer these questions:
- What are the exact cutout dimensions?
- Do I need natural gas or liquid propane?
- How much cooking space do I realistically need?
- How many independently controlled cooking zones do I want?
- Which premium features will I actually use?
- What are the clearance and ventilation requirements?
- Does the grill require electrical power?
- What warranty coverage is included?
- If the grill is open-box or clearance, what is the condition of the specific unit?
NAL TIP: If you can answer these questions before you shop, comparing grills becomes much easier.
Built-In Grill FAQs
What size built-in grill should I buy?
The right size depends on your available space, how many people you normally cook for, how often you entertain and how many cooking zones you want. For many households, a grill around 36 inches can offer a good balance between cooking space and outdoor-kitchen size.
Is a 36-inch built-in grill big enough?
For many families and regular entertaining, yes. But the burner layout and actual cooking-surface area can be just as important as the advertised width.
Is natural gas better than propane?
Neither is automatically better. Natural gas can be more convenient when a permanent gas connection is available, while propane can offer more flexibility where natural gas is not practical.
Are more BTUs better?
Not necessarily. BTU ratings tell only part of the story. Burner design, heat distribution, construction and temperature control all affect cooking performance.
Is an infrared sear burner worth it?
It can be very useful if you frequently cook steaks, chops or other foods that benefit from extremely high heat.
Is a rotisserie worth having?
A rotisserie can be valuable if you regularly cook whole chickens, roasts or other larger cuts. If you rarely cook those foods, it may be less important.
Are open-box built-in grills worth buying?
They can be an excellent value when the condition, specifications, warranty and price make sense for your needs. The key is to evaluate the specific unit rather than treating every open-box grill the same.
Can I replace my built-in grill with another grill of the same advertised width?
Not necessarily. Two grills with the same advertised width can require different cutout dimensions. Always compare the exact manufacturer installation specifications before purchasing.
