The Everdure Kiln R pairs a properly large 16-inch chamber with a wide, low opening that makes launching and retrieving a big pizza far easier than the cramped 12-inch ovens. If you regularly feed a crowd and want full-size pies without trimming the dough, the extra room is the whole point. Here is the honest picture.
Most portable ovens are built around a 12-inch pizza, which is fine for a couple but limiting for a family. The Kiln R is designed the other way round: a generous 16-inch chamber and a wide mouth that gives you space to work. Designed in collaboration with chef Heston Blumenthal, it is a smart, well-finished oven aimed squarely at cooks who want full-size pizzas without compromise. That focus on room is exactly why it is our pick for large pizzas.
| Model | Price | Fuel | Max temperature | Pizza size | Rating | Link | |
|---|---|---|---|---|---|---|---|
 | ★ Top pick Everdure Kiln R Gas Pizza Oven | £549.00 | Gas (propane) | ~480°C | Up to 16 inch | ★ 4.3 | View → |
£549.00
Gas (propane) · ~480°C · Up to 16 inch
The verdict from Tom Bradshaw, pizza oven tester
The pick for big pizzas. The Everdure Kiln R pairs a properly large 16-inch chamber with a wide, low opening that makes launching and retrieving a big pie far easier than the cramped 12-inch ovens. It runs slightly cooler than the screamers, so a pizza takes a little longer, but if you regularly feed a crowd and want full-size pies without trimming the dough, the extra room is worth having.
A wide, generous bake: a full 16-inch base slides in and out without folding the edge.
The Kiln R is the right oven if you regularly cook full-size pizzas for a family or a crowd and you are tired of trimming every base to fit a small chamber. The 16-inch stone takes a proper, generous pizza, and the wide, low opening makes it genuinely easier to slide a big pie in and out without folding the edge against the door, the small frustration that makes 12-inch ovens fiddly with larger pizzas. It also looks smart on a patio and runs on easy, dial-controlled gas, so it suits cooks who want size and convenience together.
It is less the obvious choice if you mostly cook for one or two. A 16-inch oven needs more patio space, uses more fuel and takes a little longer to heat than a compact 12-inch model, so if you rarely make a big pizza you would be paying for room you do not use. For couples and small households, a smaller oven such as the Ooni Karu 12 or the Gozney Roccbox is the more sensible fit. Buy the Kiln R for its size, not in spite of it.
This is where the Kiln R shines. The 16-inch chamber takes a full-size pizza with room to spare, and the wide, low mouth is the detail that really matters: launching and turning a big pizza is noticeably easier than in the narrow openings of the 12-inch ovens. That extra room reduces the most common cause of a botched launch with large pies, the edge catching as you slide it in. For anyone who makes big pizzas often, it is a real, everyday convenience.
The Kiln R reaches around 480°C, just below the very hottest ovens here. In practice that means a pizza takes a few seconds longer than in a 500°C oven, but the crust still blisters beautifully and the bake is excellent. For the size of chamber on offer, that small temperature trade-off is well worth it. The gas burner gives steady, controllable heat and an easy ignition, so it is as simple to run as the other gas ovens.
The Heston Blumenthal collaboration shows in the thoughtful details: the wide opening, the clean lines and the smart, well-finished body that looks the part on a patio. It is a solid, substantial oven that feels built to last, and the design clearly prioritises usability for larger pizzas over outright portability. It is bulkier and heavier to move than the compact ovens, which is the natural consequence of the bigger chamber.
Two trade-offs come with the size. The Kiln R tops out a touch below the hottest ovens, so a pizza takes a few seconds longer, though the result is still excellent. And the large chamber makes it bulkier and heavier to move and store than a 12-inch oven. Neither is a flaw, you are choosing room and a wide opening over maximum heat and portability, but both are worth weighing against how you actually cook. If you want the hottest, most portable bake instead, the Ooni Koda 16 is the more flexible all-rounder.
It takes a full 16-inch pizza, and its wide, low opening makes launching and retrieving a large pie far easier than the cramped 12-inch ovens. If you regularly cook full-size pizzas for a family or a crowd, that extra room means you do not have to trim the dough to fit.
It reaches around 480°C, just below the very hottest ovens here. That is hot enough for an excellent, blistered crust; a pizza simply takes a few seconds longer than in a 500°C oven. For the size of chamber on offer, that small trade-off is well worth it.
It was designed in collaboration with chef Heston Blumenthal, which shows in the thoughtful, wide opening and the clean, smart finish. It is a well-made oven that looks the part on a patio, aimed at cooks who want full-size pizzas without compromise.
The Kiln R is our pick for large pizzas because it gives you what the 12-inch ovens cannot: genuine room for a full 16-inch pie, and a wide opening that makes big pizzas easy to handle. It runs a touch cooler than the hottest ovens, so a pizza takes a few seconds longer, but the bake is excellent and the size advantage is real if you cook for a crowd. It is bulkier than the compact ovens, so for couples a smaller model makes more sense. If you want the hottest, most portable oven instead, look at the Ooni Koda 16, and for the smartest build at 12 inches, the Gozney Roccbox. Before deciding, our buying guide covers the size question in full.