The Big Green Egg and kamado-style grills are the most versatile outdoor cookers available — but without a heat deflector, you're only using half their capability. Direct heat grilling is just the beginning. Add a heat deflector and the kamado becomes a convection oven capable of low-and-slow smoking, indirect roasting, baking, and the kind of long, patient cooking that produces the most extraordinary results. The Onlyfire 17.5" Ceramic Heat Deflector is the accessory that unlocks all of it.
Cordierite ceramic construction that withstands temperatures over 1000°C without cracking. A 17.5" diameter specifically engineered to divert heat around the perimeter of a Large Big Green Egg or Premier Kamado Kooker. Broad compatibility with other ceramic kamado and charcoal grills. And at just £64.32, it's the accessory that transforms what your kamado can do.
Why Cordierite Ceramic Is the Right Material
Cordierite is the material used in professional pizza ovens and kiln furniture — it's chosen specifically for its exceptional thermal shock resistance, which means it can handle rapid temperature changes without cracking. In a kamado context, this matters enormously: the heat deflector is exposed to the full temperature of the charcoal fire below and the cooler air above, creating exactly the thermal gradient that causes inferior materials to crack. Cordierite handles this without compromise, and its ability to withstand temperatures over 1000°C means it performs reliably at the extreme temperatures that kamado grills can reach.
Usage Cases & Real Situations
🐖 The Low-and-Slow BBQ Smoke
Low-and-slow smoking — brisket, pork shoulder, ribs, whole chicken — requires indirect heat maintained at a consistent low temperature for many hours. Without a heat deflector, the direct heat from the charcoal makes this impossible in a kamado. With the Onlyfire deflector in place, the heat is diverted around the perimeter and the cooking chamber becomes a convection environment where the temperature is consistent, even, and controllable. This is the cooking that produces the bark, the smoke ring, and the pull-apart tenderness that defines great BBQ.
🍕 The Kamado Pizza
The heat deflector is also the key to kamado pizza — place it in the grill, add a pizza stone on top, and the kamado reaches the 400–500°C temperatures that produce a perfectly charred, crispy-based pizza in 90 seconds. The cordierite construction of the deflector itself makes it an excellent pizza stone base, and the even heat distribution ensures the pizza cooks uniformly without hot spots.
🍗 The Indirect Roast
Whole joints of meat — leg of lamb, beef rib, whole pork loin — benefit enormously from indirect kamado cooking with a heat deflector. The convection environment cooks the meat evenly from all sides simultaneously, the kamado's ceramic walls retain and radiate heat for exceptional efficiency, and the result is a roast with a beautifully caramelised exterior and a perfectly cooked interior that a conventional oven simply can't replicate.
🥖 The Kamado Bread & Baking
The kamado with a heat deflector is a wood-fired oven — and wood-fired ovens produce bread with a crust and crumb that no domestic oven can match. The cordierite deflector retains heat and radiates it evenly, creating the baking environment that artisan bakers seek. Sourdough, focaccia, flatbreads, and even cakes all benefit from the kamado's unique heat characteristics when the deflector is in place.
The Bargain Case: What You'd Pay Elsewhere
Big Green Egg's own branded ConvEGGtor heat deflector — the official accessory for the Large Big Green Egg — retails at £95–£120 from Big Green Egg dealers. Other branded kamado heat deflectors from established BBQ accessory brands typically retail at £70–£100 for comparable cordierite construction and sizing. The Onlyfire delivers the same cordierite ceramic material, the same 17.5" diameter, the same 1000°C+ temperature rating, and the same broad kamado compatibility at just £64.32 — a saving of at least £31 against the official Big Green Egg accessory, and consistently less than comparable branded alternatives.
For the accessory that doubles what your kamado can do, that's exceptional value.
In Stock — The Accessory That Unlocks Your Kamado's Full Potential
The Onlyfire 17.5" Ceramic Heat Deflector is the single accessory that transforms a kamado grill from a direct-heat cooker into a full convection oven, smoker, and pizza oven. At £64.32, the full potential of your Big Green Egg or kamado starts here.
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