Natural gas grills connect to a fixed supply line, so matching your cooking-area needs and gas pressure matters more than brand hype.
Buying a natural gas grill is different from picking a propane model off the showroom floor. You are not just choosing a cooking surface; you are choosing a permanent gas connection, a clearance footprint, and an installation format that decides how easy the grill is to move or replace later. This natural gas grill buying guide walks through sizing, the built-in versus freestanding decision, and the specs that separate a smooth install from a frustrating one.
How Much Cooking Area Do You Actually Need?
Match square inches to your typical crowd, not to the biggest party you have ever hosted. A reputable buying guide groups gas grills by cooking area: small runs 350–450 sq in, medium 450–550 sq in, large 550–650 sq in, and XL hits 650+ sq in. That same guide says to size based on how many people you usually cook for, your maximum crowd size, and how often you entertain.
Watch for total versus primary area. One current product page lists a Weber Genesis EP-325 at 360 sq in primary and 90 sq in secondary for 450 sq in total, so the number on the box is not all usable grate space. For real-world scale, the Weber Genesis 4-Burner Freestanding Natural Gas Grill lists 994 sq in total cooking area, while the Weber Summit SB38 S Built-In Natural Gas Grill lists 1053 sq in total cooking area.
| Model | Format & Size | Key Spec |
|---|---|---|
| Weber Spirit E-310 NG | Freestanding, 529 sq in | 424 primary / 105 secondary |
| Weber Spirit E-435 NG | Freestanding, 533 sq in | Current page shows $1,048.99 |
| Weber Genesis 4-Burner NG | Freestanding, 994 sq in | 48,000 BTU main burners |
| Weber Genesis EP-325 | Freestanding, 450 sq in | 360 primary / 90 secondary |
| Weber Summit SB38 S | Built-in, 1053 sq in | 65,000 main + 16,000 BTU broiler |
| Weber Summit SB38 S (size) | Built-in, 41 in W | 31.50 in D x 53.38 in H closed |
| Weber Spirit E-435 (size) | Freestanding, 51.8 in W | 30.97 in D x 60.5 in H |
Built-in vs Freestanding: Which Format Fits Your Space?
Freestanding grills are movable and easier to replace; built-in grills are permanent fixtures that demand a constructed opening. A buying guide notes built-in models require cutout measurements and, with combustible island materials, an insulated jacket. Built-in products generally cost more and are harder to swap out than freestanding units.
Freestanding grills are cart-style units, and current models list caster wheels and enclosed cabinets, which supports portability and storage. The trade-off flips with built-ins: you get a seamless outdoor-kitchen look, but you commit to the cutout, venting, and clearances permanently. One installation manual says the enclosure must remain clear and free, and the appliance must be plumbed and vented per local building and safety codes. Another manual states the grill must sit no closer than 30 inches from combustible material below, behind, or to the sides, and should not be under overhead combustible materials.
If you want a rounded-up shortlist of tested models before committing to a format, this natural gas barbecue grill roundup compares popular picks side by side.
What to Look For Before You Buy
Confirm the fuel type exactly matches your supply, because a natural gas grill is not interchangeable with propane unless specifically configured or converted. Manuals warn to check the rating plate and ensure the appliance is manufactured for the gas type being connected. Never connect to an unregulated gas supply line.
Pressure specs matter for natural gas. One manual specifies normal 7 inches water column, with a minimum of 5 and a maximum of 10.5. Propane units require an LP regulator set to 11 inches water column. Gas connections should be made by a qualified professional in accordance with local codes, and one manual instructs leak checking with soapy water after turning on the main gas supply.
Check local codes; when no local code exists, one manual cites conformity with the National Fuel Gas Code, ANSI Z223.1. Electrical add-ons like rotisserie systems must be properly grounded where required, per local codes and the National Electrical Code, ANSI/NFPA 70. Feature-wise, look for a side burner, sear zone, warming rack, tool hooks, a temperature thermometer, and cabinet storage. The Weber Genesis 4-Burner adds a 12,000 BTU sear zone and a 12,000 BTU side burner on top of its 48,000 BTU main burners. These appear on current Weber and retailer listings.
FAQs
Can I convert a propane grill to natural gas?
Only if the grill is specifically manufactured or configured for that conversion. Manuals warn against using the wrong gas type and stress that the rating plate must match the supply. Swapping a propane grill onto a home gas line without the correct conversion kit and ratings risks unsafe operation and can void coverage.
What gas pressure does a natural gas grill need?
One built-in manual specifies normal 7 inches water column, with a minimum of 5 and a maximum of 10.5. Propane units instead require an LP regulator set to 11 inches water column. Always confirm the rating plate matches your supply before connecting anything.
How far must a built-in grill sit from combustible material?
One installation manual states the grill must be located no closer than 30 inches from combustible material below, behind, or to the sides, and should not sit under overhead combustible materials. Built-in enclosures must also remain clear and free, with venting and plumbing done per local building and safety codes.
References & Sources
- Weber. “Summit SB38 S Built-In Gas Grill.” Confirms Summit SB38 S specs, dimensions, and current price.
- BBQGuys. “Gas Grill Buying Guide.” Supports sizing tiers and built-in vs freestanding trade-offs.
- AOG. “Built-In Grill Install Manual.” Covers venting, clearances, pressure specs, and code references.
