Is the E-435 worth $279 more than the S-425?

Only if you will use the side burner or need propane. Cooking area, grates, Flavorizer bars and the Sear Zone are the same on both. If you have a natural gas line and never cook sides on the grill, the S-425 does the same job for less.

Which is better for a small patio?

They are the same size: 30.97 in deep and 60.5 in high. The E-435's side burner adds width and a second cooking zone, so it needs a bit more clearance. The S-425's closed cabinet keeps the tank and tools out of sight.

Can the S-425 run on propane?

No. The S-425 is natural gas only, so you need a gas line at the grill. The E-435 comes in propane or natural gas versions.

Which has more cooking space?

Neither. Both list 428 sq in primary, 105 sq in warming rack and 533 sq in total. The E-435 lists a burger capacity of 20 versus 15 for the S-425, but the grate area is the same.

Do both have the Sear Zone?

Yes. Both have two red Boost Burner knobs that add 40% more power in the Sear Zone. Both use porcelain-enameled cast-iron grates and stainless steel Flavorizer bars.

Weber builds both on the same Spirit platform with cast-iron grates and stainless Flavorizer bars. The S-425's stainless lid and control panel resist weather better than the E-435's black enamel lid. Cover either grill and clean the grease tray to get the most years out of it.

Weber Spirit S-425 Gas Grill vs Weber Spirit E-435 Gas Grill

Buy the Spirit S-425 if you want a natural gas hookup and the lower price. Buy the Spirit E-435 if you need a side burner or want the option of propane. As of November 7, 2026, the S-425 is $500.00 at Western Mass Appliances and the E-435 is $779.00 at Abt Electronics & Appliances, a $279 gap. Both share the same 428 sq in primary and 533 sq in total cooking area, so the extra money buys the side burner and fuel flexibility, not more grilling space.

Today the Weber Spirit S-425 Gas Grill costs $279.00 less at its best price.

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