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, which sends 12,000 BTU somewhere no grate sits. It also 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.
How they score, category by category
The Weber Spirit E-425 scores higher in 4 categories, the Weber Spirit E-435 in one. One is level.
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Heat Performance
Counts for 25% of the scoreWeber Spirit E-425 8.8 Better by 0.3Weber Spirit E-435 8.5Why the Weber Spirit E-425 scores 8.8Same two Boost Burners the E-325 gets, now asked to serve 68 more square inches of primary grate.
Why the Weber Spirit E-435 scores 8.5
Four burners and 35,000 BTU unchanged from the E-425, with 12,000 more sent where no grate sits.
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Long-term Reliability
Counts for 20% of the scoreWeber Spirit E-425 8.0 Better by 1.0Weber Spirit E-435 7.0Why the Weber Spirit E-425 scores 8.0Four burner tubes carry ten years here, but paint and everything unlisted still fall off cover at two.
Why the Weber Spirit E-435 scores 7.0
The side burner appears in none of Weber's longer warranty tiers, so the paid-for part carries two years.
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Build Quality
Counts for 18% of the scoreWeber Spirit E-425 9.0 Better by 0.5Weber Spirit E-435 8.5Why the Weber Spirit E-425 scores 9.0Cast iron, stainless bars and a closed cabinet, holding 103 pounds steady across a 51.80 inch frame.
Why the Weber Spirit E-435 scores 8.5
Cast iron, stainless bars and a closed cabinet, but one side table is now a recessed burner well.
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Ease of Use
Counts for 15% of the scoreWeber Spirit E-425 9.0 Better by 0.5Weber Spirit E-435 8.5Why the Weber Spirit E-425 scores 9.0Four Snap-Jet knobs light one at a time, so the red pair sets a sear side in seconds.
Why the Weber Spirit E-435 scores 8.5
Every burner lights on its own, though the fifth knob hangs under the table instead of on the fascia.
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Value
Counts for 12% of the scoreWeber Spirit E-425 7.3Weber Spirit E-435 9.0 Better by 1.7Why the Weber Spirit E-435 scores 9.0No Genesis is listed under $899.00, and the four-burner E-415 asks $1,199.00 against this grill's $729.00.
Why the Weber Spirit E-425 scores 7.3
Stepping from $549.00 to $629.00 adds a burner and grate, but not a third Boost Burner.
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Maintenance
Counts for 10% of the scoreWeber Spirit E-425 7.5Weber Spirit E-435 7.5Level: within a tenth of each other.
Why the Weber Spirit E-425 scores 7.5The grease tray slides clear in one motion, yet 428 square inches of enamel all have to stay unchipped.
Why the Weber Spirit E-435 scores 7.5The grease tray still empties in one motion, but the burner well is a second surface catching boil-overs.
See all six scores in one table
| Category | Weber Spirit E-425 | Weber Spirit E-435 |
|---|---|---|
| Heat Performance (25%) | 8.8 Better | 8.5 |
| Long-term Reliability (20%) | 8.0 Better | 7.0 |
| Build Quality (18%) | 9.0 Better | 8.5 |
| Ease of Use (15%) | 9.0 Better | 8.5 |
| Value (12%) | 7.3 | 9.0 Better |
| Maintenance (10%) | 7.5 | 7.5 |
| Avid Griller Score | 8.4 | 8.2 |
Both reviews are scored on the same six weighted categories, on the same 0 to 10 scale, and each reason is the one that review gave. A category is marked better only where the two differ by a tenth or more. How we score →
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 →
Where the spec sheets differ
Quoted from each maker's own specifications, as each review records them. Figures the two products publish identically are left out, so 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.