Weber sells two four-burner Spirits, and their specification tables are nearly the same document. Four stainless burners, 35,000 BTU, on both. Primary grate 428 square inches on both, 533 counting the rack. Both weigh 103 pounds inside the same 46.20 by 51.80 by 26.60 inch box.
One line separates them. Model 1500782, the E-435, carries a side burner rated 12,000 BTU. The E-425 carries none. Weber’s store asks $729.00 for this one and $629.00 for that one.
That gap is the whole subject of this page. A hundred dollars, and what it buys is a burner with no grate over it. Worth it?
12,000 BTUThe side burner, the only spec the E-425 lacks
428 sq inPrimary grate, identical to the cheaper E-425
$100Weber's step up from the E-425, our subtraction
51.80 inWidth the cart needs with the lid closed
First Impressions of the Weber Spirit E-435 Gas Grill
Set on a deck, the E-435 reads as a plain black cabinet on two wheels. Nothing sits on the lid but a badge and a temperature dial. A brushed panel runs beneath it, wearing the SPIRIT wordmark and four knobs. The right-hand pair sit in red collars, under a red bracket printed SEAR ZONE.
Then the eye goes left, and the difference shows up. A stainless well is sunk into the left side table, with a hinged cover over it. Its knob does not join the other four. A small bracket under the table’s front edge holds it, alone.
First cook, the layout teaches itself. Put chicken thighs on the red half and the cast iron marks them quickly. The cover flips up and a pan of sauce goes on the well. It ticks along beside the meat without taking any grate at all.
Then something else becomes obvious. The left table is now the sauce, and the prep has nowhere to go.
Key Features of the Weber Spirit E-435 Gas Grill
Most of this cart is standard current-Spirit hardware, and the bullets below say so plainly. Read them for where the fifth burner changes things. Everything else on this list the cheaper model has too.
- Side Burner: 12,000 BTU is Weber’s rating for it, answering to a knob of its own. It sits in a recess in the left table, under a lid that folds back. It shares nothing with the four burners under the lid. It is the single specification the E-425 does not have.
- A Sear Zone only two knobs reach: Four main burners share 35,000 BTU. Two wear red and answer to the Boost setting. Weber says that setting unleashes 40% more power, without ever naming a baseline. The other two burners stay outside the printed bracket.
- Cast-iron: Porcelain-enameled cast iron covers all 428 square inches. Heavy iron takes its time coming up and then holds. Under that enamel, nothing else is holding the rust off. Treat it as a coating, not as armour.
- Stainless steel: Only two components on this cart are stainless. The burner tubes carry Weber’s ten-year cover, the Flavorizer bars above them five. Grease landing on those bars flashes back up as flavour. What does not runs off clear of the flame.
- Snap-Jet ignition, five times over: Every burner lights on its own, including the one in the table. You turn the knob until it snaps and catches. No master button fires the set. Five separate controls means nothing here lights by accident.
- Grease Management System: A tray slides out from under the cabinet and lifts away. Whatever the Flavorizer bars shed ends up in it. That tray is the part you will handle most weeks. Weber says nothing about where a boil-over on the side burner goes.
- Weber Works side rails: Both flanks carry rails for snap-on parts. The cheapest snap-on is $9.99; a condiment holder runs $24.99. A caddy and a flex light are $39.99 each. Everything in that list is a separate purchase.
- Cabinet and tables: The propane tank goes behind a door, and Weber does not include one. Four tool hooks hang off the body. Weber counts two side tables, and the burner occupies one of them. No fuel gauge appears in the specifications.
- Weber Crafted compatibility: A $49.99 frame kit lets other cookware sit where the grate does. Whichever piece you pick, griddle or pizza stone or sear plate, it is $99.99. A full griddle insert is listed at $169.99. On a $729.00 grill, that is a second budget.
Add the two published inputs together and this cart can draw 47,000 BTU per hour. That addition is ours; Weber prints 35,000 and 12,000 separately. Of that total, 12,000 goes somewhere no food can sit on a grate. Roughly a quarter of the fire is aimed at a saucepan.
Whether that is generous or wasteful depends entirely on how you cook. Beans, glaze, a boil for corn, a pan of onions. None of it competes for grate space any more. On 428 square inches, freeing that space counts for something.
The grilling fire itself did not change. Four burners, 35,000 BTU, two of them boosted, exactly as on the E-425. Look closely at a Boost knob and the design intent is legible. A red flame icon marks a detent past the end of the normal sweep.
Boost is not the top of the dial. It is somewhere you go on purpose, and only two knobs can go there. Weber publishes no temperature for it, here or anywhere on this model’s page.
Build, handling and durability
Pick this grill up against a Genesis and the price difference explains itself. The Spirit weighs 103 pounds. The Genesis E-415, also a four-burner, weighs 175. Seventy-two pounds of metal is what that step up mostly buys.
The side burner is a hole cut in the furniture. A stainless well and a hinged cover replace part of one work surface. Whatever boils over lands in that recess rather than on a flat table.
Two wheels take one end; legs hold the other. Moving it means lifting before rolling, at 103 pounds.
Weber’s warranty runs in three tiers. Ten years covers the cookbox, lid and burner tubes. Grates and Flavorizer bars get five years.
Everything the schedule does not name gets two years. The side burner appears in none of the longer tiers.
Running costs, upkeep and value
Weber’s store and Amazon agree on this grill, which is not always true. Both were asking around $729.00 when the price was checked on 2026-09-17. The page shows $779.00 struck through above it. Add propane to that figure; no tank comes in the box.
Now put the Genesis question to rest, because the numbers answer it cleanly. The cheapest liquid-propane Genesis Weber lists is a three-burner at $899.00. The cheapest four-burner Genesis is the E-415, at $1,199.00. So no Genesis at all is listed below this grill’s price.
What $470.00 more would buy at the E-415 is specific. That is 218 more square inches of primary grate, plus 13,000 more BTU. Also 72 more pounds of metal and 12.70 more inches of wall. If the wall is not there, the question answers itself.
Upkeep splits in two on this model. Chipped enamel means bare iron, so brushing matters more than scrubbing. The tray underneath slides free and empties in one motion. The well in the side table is a second surface to wipe.
A cover is $89.99 and worth pricing in from the start. The Crafted route adds $49.99 for the frame before any $99.99 accessory. A griddle insert on its own is listed at $169.99.
Possible Weber Spirit E-435 Gas Grill Complaints
- The part you paid extra for has the shortest cover: Weber’s warranty names the cookbox, the lid, the burner tubes, the grates and the bars. The side burner is in none of those lines. It falls under all remaining parts, which is two years. The $100 premium buys the component with the least protection here.
- Using the side burner costs you a side table: The specification list says two side tables. One of them holds the burner. Lift the cover, set a pan down, and that surface is gone. On a cart this size there is nowhere else for a platter.
