Weber Spirit E-425 vs E-435
Every published figure matches but one: the E-435 adds a 12,000 BTU side burner for $100. Whether that burner is worth the money, and the side table it costs.
We pick the Weber Spirit E-425 Gas Grill
Take the E-425 unless you will genuinely cook on a side burner. The main grills are the same: 35,000 BTU across four stainless burners, 428 sq in of primary grate, 82 BTU per square inch, 103 pounds, 51.80 inches of cart. The $100 step up adds a 12,000 BTU side burner — 12,000 BTU sent somewhere no grate sits — and takes away one side table to make room for it.
What actually differs
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One figure differs on the whole spec sheet
Burner output, primary and total grate, weight and footprint are identical. The side burner is the only line that changes, which makes this the clearest $100 decision in the Spirit range.
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The burner is not in any of the long warranty tiers
Weber covers the cookbox and burner tubes for ten years. The side burner appears in none of those tiers, so the part you are paying for carries two years — the same cover as the paint.
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You lose a side table and gain a second surface to clean
The burner sits in a recessed well where a table used to be, and its knob hangs under the table rather than on the fascia. The well also catches boil-overs.
The scorecard, side by side
Both reviews are scored on the same six weighted categories, each bar on the same 0–10 scale, and every cell carries the reason that review gave. A row is marked won only where the two differ by a tenth or more. How we score →
Same two Boost Burners the E-325 gets, now asked to serve 68 more square inches of primary grate.
Four burners and 35,000 BTU unchanged from the E-425, with 12,000 more sent where no grate sits.
Four burner tubes carry ten years here, but paint and everything unlisted still fall off cover at two.
The side burner appears in none of Weber's longer warranty tiers, so the paid-for part carries two years.
Cast iron, stainless bars and a closed cabinet, holding 103 pounds steady across a 51.80 inch frame.
Cast iron, stainless bars and a closed cabinet, but one side table is now a recessed burner well.
Four Snap-Jet knobs light one at a time, so the red pair sets a sear side in seconds.
Every burner lights on its own, though the fifth knob hangs under the table instead of on the fascia.
Stepping from $499.00 to $629.00 adds a burner and grate, but not a third Boost Burner.
No Genesis is listed under $899.00, and the four-burner E-415 asks $1,199.00 against this grill's $729.00.
The grease tray slides clear in one motion, yet 428 square inches of enamel all have to stay unchipped.
The grease tray still empties in one motion, but the burner well is a second surface catching boil-overs.
Heat density
Burner output over the surface it has to heat, derived in each review from that cooker's own published figures. A bigger number is not a better grill — it says how hard the cooker can drive its grate, nothing more. All grills ranked →
Published figures that differ
Quoted from each maker's own specifications, as each review records them. Figures the two products publish identically are left out — only the differences are listed.
Which one is for you
You want the most grate and burner for the money, and you have a kitchen indoors.
Check price →You will actually simmer sauce or boil corn outside — tailgating, a long cook, or an outdoor kitchen with no indoor hob nearby.
Check price →More head-to-heads
Every score and figure on this page comes from our own reviews of these two products, linked above. We have not tested them side by side in one place; the comparison is between two full reviews, each built from the maker's published specifications and documentation. Prices move, and the ones quoted are the ones each review checked on its own date.