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Ooni did not invent the backyard pizza oven, but it is the brand that turned one into something a normal household could actually buy: a compact, high-heat box that reaches 950°F on a patio table and bakes a Neapolitan-style pie in roughly a minute. That success has a downside for anyone shopping right now. The company has refreshed, renamed and quietly retired enough models that a large share of the advice still circulating online describes ovens you can no longer buy new — and in one case describes a single oven as two separate products. The cross-brand picture against Gozney and Blackstone is worth reading on its own; this guide stays inside Ooni and goes deeper than any spec sheet will.
The short version of where the brand stands: Ooni's current U.S. catalog contains nine active ovens, not the older Koda/Karu/Fyra/Volt spread that most guides still reproduce. Five are gas Koda models — Koda 2 Max, Koda 2 Pro, Koda 2, Koda 16 and Koda 12. Three are multi-fuel Karu models — Karu 2 Pro, Karu 2 and Karu 12. One is electric: the Volt 2. There is no pellet oven in the current lineup at all. The Fyra 12, the Volt 12 and the Karu 16 are legacy products now, still findable on the used market and on residual retail stock, but no longer part of what Ooni sells as its range.
This guide ranks all nine current ovens by breadth of capability, then resolves them by use case, because those two things are not the same — the biggest Ooni is emphatically not the right Ooni for every buyer. It also maps the generation history that makes the current names confusing, separates manufacturer preheat figures from what a fully saturated cordierite stone actually does, and covers the ownership details that spec pages skip: accessory compatibility across generations, which fuel hardware fits which oven, and how the warranty extension really works.
It is written for home cooks building an outdoor kitchen or upgrading a first oven, not for restaurants. If you have not yet settled the fuel question — gas versus wood versus pellets — start with the fuel comparison and come back. If you are choosing between brands rather than models, the Ooni vs Gozney vs Blackstone breakdown covers that ground directly.
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Ooni's Philosophy — What the Brand Actually Optimizes For
Ooni was founded in 2012 by Kristian Tapaninaho and Darina Garland, and it started as a crowdfunding project rather than a product line. The original Uuni campaign ran from November 15 to December 19, 2012, raised £17,136 from 142 backers, and shipped a pellet-fired portable oven that fit on a table. The company was later renamed Ooni, and the ovens are still designed and engineered by Ooni's own team in Edinburgh, Scotland. Ooni later expanded into larger multi-fuel models: the Karu 16 and Karu 2 Pro comparison traces that 16-inch platform from its 2021 launch to the second-generation oven introduced in 2024. For these larger outdoor ovens, many owners use two peels: a launch peel and turning peel, because each tool handles a different stage of cooking.
Every branch of the current lineup is a variation on that original idea: high heat, short bake, small footprint, home cook. The design targets have stayed remarkably consistent across fifteen years of products — a 950°F ceiling (the Volt is the exception at 850°F), a 60-to-90-second Neapolitan bake, and a cooking floor made of cordierite rather than steel. What has changed is how the brand reaches that ceiling. Gas delivers repeatability and no fuel tending. Wood and charcoal deliver the live-fire experience and top-end radiant heat. Pellets delivered cheap, gravity-fed fuel for a decade and have now been retired from the U.S. range. Electricity delivers indoor use with no combustion at all.
The second half of Ooni's strategy is the ecosystem. Covers, tables, peels, thermometers, dough tools, proofing boxes, cast-iron cookware and a free companion app (the Ooni app, with recipes, dough calculation and Connect integration) are all part of the pitch. The brand has also moved beyond ovens entirely: the Halo Pro spiral mixer, announced in 2025, carries a 7.3-quart bowl, handles up to roughly 5 kg of dough, offers 58 speed settings and adds whipping and beating functions alongside spiral kneading. The Halo Core, announced in 2026, is the compact sibling — a 4.8-quart bowl with a maximum batch around 2.5 kg. Neither belongs in an oven ranking, but both tell you what kind of company you are buying from.
What the brand optimizes for, in one sentence: getting a home cook to a genuine 60-second pizza with the least possible friction, and then selling that cook the tools to do it repeatedly.
How to Read Ooni's Current Model Names
Before ranking anything, the naming has to be decoded, because Ooni changed the rules mid-stream and the old and new conventions now coexist.
Historically, the number was the pizza diameter. A Koda 12 bakes a 12-inch pizza; a Koda 16 bakes a 16-inch pizza; a Karu 12 and a Karu 16 followed the same logic. Under the current generation-based convention, the number is the generation, and the suffix describes tier and technology: Koda 2 is the second-generation compact Koda, Koda 2 Pro is the second-generation large one, Koda 2 Max is the second-generation flagship. Pro and Max signal size and capability, not a later generation of the same oven.
That produces two traps worth internalizing:
Trap one: "Karu 2" is smaller than "Karu 12." Ooni's current compact multi-fuel oven launched as the Karu 12G and was renamed Karu 2 under the generation system. Ooni states plainly that the Karu 12G and the Karu 2 are identical ovens — same hardware, new packaging and name. Any guide that lists both as separate models is describing one oven twice. Because the higher number now means "newer" rather than "bigger," the Karu 2 is the compact model and the Karu 2 Pro is the large one, even though the Karu 12 sits between them numerically.
Trap two: "Koda 16" and "Koda 2" are from different eras and the numbers mean different things. The Koda 16 is a first-generation oven that Ooni still classifies as 1st Generation and still sells; the Koda 2 is its second-generation counterpart in the compact class. Reading "2" as "better than 16" happens to be roughly right in that pairing, but for the wrong reason.
| Name | What the number means | Size class |
|---|---|---|
| Koda 12 | Pizza diameter (12 in) | Compact, first-generation gas |
| Koda 16 | Pizza diameter (16 in) | Large, first-generation gas |
| Koda 2 | Generation (2nd) | Compact, second-generation gas — 14 in floor |
| Koda 2 Pro | Generation + tier | Large, second-generation gas — 18 in+ deck |
| Koda 2 Max | Generation + tier | Flagship gas — 24 in deck, two zones |
| Karu 12 | Pizza diameter (12 in) | Compact, first-generation multi-fuel |
| Karu 2 | Generation (2nd) | Compact multi-fuel — identical to Karu 12G |
| Karu 2 Pro | Generation + tier | Large multi-fuel — 17 in cooking surface |
If you are shopping the secondhand market, this table matters more than it does for new buyers. The used-oven checklist covers what else to verify before handing over money.
The Koda Family — Ooni's Gas Lineup
Gas is the majority of Ooni's range for a reason. A propane Koda needs no fire tending, reaches temperature predictably, and recovers between bakes without any of the fuel management a wood oven demands. For weeknight cooking — the case where a pizza oven either earns its patio space or does not — that reliability is the whole argument. The complete gas-oven buying guide covers the wider market; here is how Ooni's five gas ovens separate.
Ooni Koda 2 Max — The Two-Zone Flagship
Specs / Caractéristiques
- Fuel: gas (U.S. configuration is propane-oriented; regional fuel configurations differ and should not be generalized)
- Temperature range: 212–950°F
- Cooking deck: 24 inches wide — Ooni markets it for one 20-inch New York-style pizza, two 12-inch pizzas, or three smaller pies depending on layout
- Burners: two independently controlled G2 gas burners with two heat zones
- Stone: two 20 mm cordierite sections
- Weight: 95 lb / 43 kg
- Dimensions: 31 × 28 × 17 in
- Cook time: as little as 60 seconds
- Preheat claim: ready to cook at 750°F in about 30 minutes
- Technology: Ooni Connect Digital Temperature Hub with ambient sensing, food-probe capability and app connection
- Construction: powder-coated carbon steel exterior, stainless-steel interior/base/legs, aluminum nose sections, borosilicate-glass visor
Where it fits: The flagship. Its two independently controlled zones are the one thing no other Ooni has, and they are genuinely useful for cooking two different things at once or running two pizzas without compromise.
Pros: two true cooking zones; enormous deck that removes all launch and rotation pressure; 20 mm stones with serious thermal mass; full Connect integration with probe support.
Cons: at 95 lb, "portable" is theoretical — the assembled legs do not fold, and it demands a permanent table or cart. It is a capacity purchase, not a quality upgrade, and it only pays off if you actually cook for groups.
Verdict: The best Ooni for entertaining and the wrong Ooni for a couple that bakes two pizzas on a Friday. Buy it for the deck and the zones, not for better pizza than a Koda 2 Pro makes.
Perfect for: Outdoor kitchens, permanent patio setups, households regularly cooking six or more pizzas in a session.
Ooni Koda 2 Pro — The Best All-Rounder
Specs / Caractéristiques
- Fuel: gas / propane in the standard U.S. configuration
- Temperature range: 320–950°F
- Cooking surface: 18-inch-plus deck — Ooni claims 33% greater capacity than the Koda 16
- Stone: 20 mm cordierite
- Weight: 66 lb / 30 kg
- Dimensions: 26.85 × 25.67 × 15.47 in
- Cook time: as little as 60 seconds
- Preheat: 20–30 minutes is the realistic planning range; full stone heat-soak runs longer
- Burner: twin next-generation G2 lateral flame system
- Included: Ooni Connect Digital Temperature Hub with food probe
- Construction: powder-coated carbon steel with stainless and aluminum internals
Where it fits: The strongest single-oven answer in the current range. It pairs large-pizza headroom with meaningfully less bulk than the Max, and Ooni's own numbers for the G2 burner — stone-temperature variation down from 180°C to 45°C and 25% faster stone reheating versus first-generation Koda benchmarks — describe the practical difference between this and a Koda 16.
One clarification worth stating plainly: the Koda 2 Pro is not a two-zone oven. It has two burners, but you cannot set each side to an independent cooking temperature the way you can on the Max.
Pros: 18-inch capacity without flagship weight; 20 mm stone; genuinely improved heat distribution and recovery; Connect hub and probe included rather than sold separately.
Cons: 66 lb still rules out casual repositioning; getting the stone to the very top of its range takes materially longer than the headline ready-to-cook figure.
Verdict: If you want one Ooni and no compromises you will notice later, this is it. An infrared thermometer remains worth owning even with Connect, because Connect reads ambient temperature, not stone surface.
Perfect for: Households that want large New York-style pies and a single oven that does everything well.
Ooni Koda 2 — The Modern Compact
Specs / Caractéristiques
- Fuel: gas / propane for the U.S. configuration
- Capacity: 12- or 14-inch pizzas on a 14-inch-plus floor
- Maximum temperature: 950°F
- Stone: 15 mm cordierite — 50% thicker than the Koda 12's 10 mm stone
- Cooking area: roughly 20% larger than the Koda 12
- Weight: 35.27 lb / 16 kg
- Dimensions: approximately 21.5 × 18.6 × 13.1 in (Ooni's own imperial and metric figures disagree on the middle dimension; the metric measurement is the reliable one)
- Preheat claim: about 20 minutes to 750°F
- Cook time: as little as 60 seconds
- Burner: G2 tapered-flame design; Ooni claims a measured 200% improvement in heat distribution over the Koda 12
- Recovery: Ooni claims 20% quicker stone reheat than the Koda 12
- Ooni Connect: compatible, hub sold separately
Where it fits: The modern compact entry. The 14-inch floor is the detail that matters — it is a real usability upgrade over 12 inches without crossing into the bulk of the 16-inch class, and it gives you room to launch and rotate without panic.
Pros: 15 mm stone and G2 burner at a compact weight; 14-inch floor with meaningful launch margin; optional Connect upgrade.
Cons: Owners report measurable left-right stone differences during warm-up, and the low end of the gas valve is fairly coarse — both are arguments for an infrared thermometer, not against the oven.
Verdict: The best current-generation compact gas Ooni, and the model most first-time buyers should be comparing against — not the Koda 12.
Perfect for: Couples and small families on a patio table, first oven, anyone who wants a 14-inch pie without the mass of a large oven.
Ooni Koda 16 — The Proven 16-Inch Value Play
Specs / Caractéristiques
- Status: active, explicitly classified by Ooni as 1st Generation
- Fuel: gas; U.S. support also exists for approved natural-gas configurations, and fuel hardware is region- and model-specific
- Capacity: up to 16-inch pizza
- Burner: the distinctive L-shaped flame layout
- Maximum temperature: 950°F
- Preheat: Ooni states 20 minutes
- Cook time: as little as 60 seconds
- Weight: 40.1 lb / 18.2 kg
- Dimensions: 25 × 23.2 × 14.7 in
- Construction: powder-coated carbon steel, stainless interior/base/legs, cordierite stone
Where it fits: The portfolio's known quantity. The Koda 16 is the oven that expanded the Koda concept to full-size pies and introduced the L-shaped burner that became one of Ooni's signature gas layouts.
Pros: proven, mature, extensively documented; 16-inch capacity at 40 lb; enormous troubleshooting literature because of the installed base.
Cons: it is a first-generation design. The Koda 2 Pro offers a bigger deck, thicker stones, better recovery and connectivity above it. A fully heat-soaked center stone takes longer than the advertised 20 minutes, especially in cold weather.
Verdict: Still an excellent oven and the classic mid-tier value pick — the question in the current range is simply whether the Koda 2 Pro's advantages justify the step up for your cooking.
Perfect for: Buyers who want 16-inch capacity, proven hardware and a lower tier of spend.
Ooni Koda 12 — The Simplest Gas Entry
Specs / Caractéristiques
- Status: active, first-generation Koda, introduced in 2019
- Fuel: gas; a straightforward outdoor propane oven
- Capacity: 12-inch pizzas
- Maximum temperature: 950°F
- Preheat: as little as 15 minutes
- Cook time: as little as 60 seconds
- Stone: 10 mm cordierite
- Weight: roughly 20 lb / 9.2 kg
- Dimensions: 24.4 × 15.5 × 11.7 in
- Setup: unfold the legs, connect gas, ignite
Where it fits: The lightest and simplest gas Ooni, and the cleanest "just give me a compact gas oven" entry point. It is also the model most thoroughly covered in our beginner-focused Koda 12 review.
Pros: genuinely grab-and-go at around 20 lb; 15-minute warm-up; no fuel management whatsoever; the deepest troubleshooting base of any Ooni.
Cons: the 10 mm stone is half the thickness of the Koda 2's, which means a bigger temperature drop between pizzas. The smaller opening leaves less room for launch and rotation errors — beginners often find an 11-inch pie easier to manage than a nominal 12-inch one. Long-running owner threads include flame-safety-device and ignition troubleshooting as units age.
Verdict: The simplest way into gas pizza. If the extra spend is available, the Koda 2's thicker stone and 14-inch floor are the better long-term buy.
Perfect for: Absolute beginners, small patios, buyers optimizing for weight and simplicity.
The Karu Family — Wood, Charcoal and Gas Conversion
The Karu line exists for cooks who want live fire and the option to switch. Every Karu burns wood and charcoal out of the box and can be converted to propane with a model-specific Ooni gas burner sold separately. That flexibility is the entire proposition, and it is also the source of the single most common compatibility mistake in the Ooni ecosystem — more on that in the FAQ and in the fuel comparison.
Ooni Karu 2 Pro — The Flagship Multi-Fuel
Specs / Caractéristiques
- Fuel: wood and charcoal standard; propane only via the dedicated Karu 2 Pro gas burner
- Maximum temperature: 950°F
- Pizza capacity: up to 16 inches on a 17-inch cooking surface
- Internal height: 5.7 in
- Stone: 15 mm cordierite
- Weight: 62.6 lb / 28.4 kg
- Dimensions: approximately 32 × 20 × 33 in (official pages vary slightly in rounding)
- Cook time: as little as 60 seconds
- Preheat: up to pizza temperature in roughly 15 minutes under favorable conditions
- Door: high-temperature borosilicate ClearView glass, with a substantially larger viewing area than the Karu 16's
- Fuel tray: extra-large, revised airflow controls
- Connectivity: front-mounted Ooni Connect hub with ambient sensor, included food probe, Bluetooth and app monitoring
Where it fits: The flagship multi-fuel Ooni and the successor to the Karu 16. If wood and charcoal are the point of pizza for you, this is the current top of that line.
Pros: genuine live-fire cooking with charcoal and hardwood; bigger ClearView window; Ooni Connect and probe included; large fuel tray that reduces refueling interruptions.
Cons: you must actually use the solid fuel to justify it — with the accessory gas burner it becomes a capable gas oven but does not gain Koda 2 Max-style independent zones, and some owners report slower warm-up on gas than on wood. The old Karu 16 burner does not fit this oven.
Verdict: Excellent if the wood fire is the experience you are buying. If you know you will run propane 90% of the time, a Koda is the better-spent money.
Perfect for: Cooks who want live fire plus a gas fallback, and who cook more than pizza — roasts, vegetables, cast-iron work.
Ooni Karu 2 (also sold as Karu 12G)
Specs / Caractéristiques
- Fuel: wood and charcoal standard; optional gas burner
- Capacity: 12-inch pizza on a 13.3-inch stone
- Maximum temperature: 950°F
- Preheat: ideal baking temperature in as little as 15 minutes
- Cook time: as little as 60 seconds
- Stone: 15 mm cordierite
- Weight: 33.6 lb / 15.3 kg
- Dimensions: 28.3 × 16.5 × 30.3 in (the third figure is the assembled height with the chimney, despite how Ooni's own page labels it)
- Features: ClearView borosilicate-glass door, integrated thermometer, fuel tray roughly 45% larger than the original Karu 12, SureGrab handle, powder-coated shell
- Manufacturer claims: up to 29% faster to ideal baking temperature, and up to 36% less gas consumption in the gas configuration than previous models
Where it fits: The compact "does everything" Ooni. It was introduced as the Karu 12G and renamed Karu 2 under the generation system; Ooni states the two are identical. Treat it as one product.
Pros: real solid fuel in a 33 lb package; glass door and integrated thermometer are meaningful day-to-day upgrades over the Karu 12; the gas burner accessory is shared across the Karu 12, Karu 12G and Karu 2.
Cons: the 13.3-inch stone caps you at 12-inch pies; as with any convertible, the gas route costs extra and delivers a different experience than the wood route.
Verdict: The right pick for a small household that wants live fire on weeknights and convenience on the others. Use the genuine Ooni burner rather than a third-party conversion — gas hardware affects flame safety and warranty.
Perfect for: Compact patios, cooks who want to try wood without committing to a large oven.
Ooni Karu 12 — The Budget Live-Fire Entry
Specs / Caractéristiques
- Fuel: wood and charcoal; optional approved gas burner
- Capacity: 12 inches
- Maximum temperature: 950°F
- Preheat: ideal baking temperature in as little as 15 minutes
- Cook time: 60 seconds
- Stone: 15 mm cordierite
- Weight: 26.5 lb / 12 kg
- Dimensions: 31.5 × 15.8 × 30.3 in
- Features: removable front door, removable chimney with damper, quick-access rear fuel hatch, folding legs
Where it fits: The inexpensive way to learn live-fire pizza. The learning curve here is fire management and launch technique, not assembly.
Pros: lightest Ooni multi-fuel at 26.5 lb; folding legs and a removable chimney make it genuinely transportable; 15 mm stone rather than a thin 10 mm one.
Cons: an opaque door and no integrated thermometer, where the Karu 2 has glass and a gauge. Gas-burner owners sometimes report disappointing maximum temperature when the burner or regulator setup is mismatched, and multiple burner generations exist in the used market.
Verdict: Strong value for a first live-fire oven. Verify the exact burner generation before buying replacement gas hardware.
Perfect for: Buyers learning wood and charcoal cooking without a large outlay.
The Volt — Ooni's Electric Branch
Ooni has exactly one electric oven, and it is the only current Ooni designed to run indoors.
Ooni Volt 2
Specs / Caractéristiques
- Power: electric; North American and European specifications differ (the EU page lists 220–240 V / 1600 W)
- Use: indoor only
- Temperature range: 70–850°F
- Cooking space: 13.3-inch stone, marketed as a 12-inch pizza oven
- Cook time: as little as 90 seconds
- Preheat: approximately 20 minutes for high-temperature pizza use
- Stone: 10 mm cordierite
- Weight: 38.8 lb / 17.6 kg
- Dimensions: 21.5 × 17.4 × 10.4 in
- Controls: Pizza Intelligence adaptive heating with Neapolitan, Thin & Crispy and Pan presets, plus dough proofing, Oven, Broil/Grill, two custom settings, crisping-intensity control and Boost
- Filter: removable dishwasher-safe smoke and grease filter
- Versus the Volt 12: Ooni claims a 30% smaller footprint, the same 13-inch cooking space, a 64% larger viewing area and a 41% wider temperature range
Where it fits: The indoor specialist. It removes weather, fuel and fire management from the equation entirely — for an apartment or a kitchen-bound cook, that is a different product category rather than a lesser oven.
Pros: no fuel, no weather, no fire to tend; repeatable results; broad temperature range down to 70°F for proofing and low-temperature work; a dishwasher-safe filter that makes indoor use practical.
Cons: the most polarized owner feedback in the current family. Positive reports focus on repeatability and baking indoors regardless of season; critical threads repeatedly mention loud or high-pitched fan noise, stone cracking, and temperature drops or overshoot on individual units. These are anecdotes and cannot establish a defect rate, but they are frequent enough to mention rather than repeat a frictionless marketing story. Ooni's stone replacement response is generally reported as fast.
Verdict: The only Ooni for indoor-only use, and a genuinely good one when it behaves. Note the reported stone failures before buying, and register the oven — the Volt 2's extension is shorter than the gas and multi-fuel models'.
Perfect for: Apartment dwellers, cold-climate cooks, anyone who wants pizza without a propane supply or an outdoor space.
Every Current Ooni Oven, Ranked
The ranking below orders the nine active ovens by breadth of capability — how much they can do, how well they hold heat, and how many cooking situations they cover. It is deliberately not a claim that the biggest oven is best for you; the decision guide further down resolves the ranking into an actual recommendation.
| # | Model | Fuel | Max pizza | Stone | Weight | Best for |
|---|---|---|---|---|---|---|
| 1 | Koda 2 Pro | Gas | 18 in | 20 mm | 66 lb | Best single oven overall |
| 2 | Koda 2 Max | Gas | 20 in (24 in deck) | 20 mm × 2 | 95 lb | Entertaining, two-zone cooking |
| 3 | Karu 2 Pro | Wood / charcoal / gas | 16 in | 15 mm | 62.6 lb | Live fire plus gas flexibility |
| 4 | Koda 2 | Gas | 14 in | 15 mm | 35.3 lb | Modern compact gas |
| 5 | Koda 16 | Gas | 16 in | 15 mm | 40.1 lb | Proven value, large pies |
| 6 | Karu 2 (Karu 12G) | Wood / charcoal / gas | 12 in | 15 mm | 33.6 lb | Compact multi-fuel |
| 7 | Volt 2 | Electric | 12 in | 10 mm | 38.8 lb | Indoor-only cooking |
| 8 | Koda 12 | Gas | 12 in | 10 mm | ~20 lb | Simplest, lightest gas entry |
| 9 | Karu 12 | Wood / charcoal / gas | 12 in | 15 mm | 26.5 lb | Budget live-fire learning |
Two things the table makes visible. First, stone thickness tracks the ranking more closely than deck size does — the 20 mm ovens at the top hold heat through a pizza and recover faster, which is the difference you feel on your fourth bake of the evening. Second, weight tracks it almost as closely, and that is the trade you are actually making. The cost guide breaks down what each tier of pizza oven buys you across the wider market.
Legacy Ooni Ovens — What's Discontinued and What It's Worth
Ooni retires models quietly. Several ovens that still dominate search results and secondhand listings are no longer in the current U.S. catalog, and recommending them as current products would be misleading.
Ooni Fyra 12 — the last pellet oven. No longer in Ooni's current U.S. oven catalog, though residual retail stock and used units circulate freely. It launched in 2020 as the successor to the Ooni 3, with a gravity-fed pellet hopper roughly 50% larger than its predecessor, a redesigned fuel tray and airflow path, added insulation, a claimed 16% faster heat-up and a claimed 44% lower fuel consumption over a 90-minute cook. It reaches 950°F, weighs about 22 lb, and uses a 10 mm cordierite stone. The thing to know before buying one: there is currently no pellet replacement in the U.S. range, so you are buying into a retired fuel system. Pellet quality and airflow matter more than the gravity feed suggests — damp pellets, bridging in the hopper and ash accumulation are the recurring owner complaints. Our full Fyra 12 review covers it in detail.
Ooni Volt 12 — the first electric. Superseded by the Volt 2 and absent from the current catalog. It launched in March 2023 as Ooni's first all-electric oven, marketed for indoor and outdoor use, hitting 850°F with a roughly 13 × 13-inch stone, around 39 lb, and a manual temperature and top-versus-bottom heat-balance control. A meaningful minority of owners prefer its physical controls and perceived quieter operation to the Volt 2, which is a legitimate reason to buy one used — but it should not outrank the Volt 2 for a new buyer.
Ooni Karu 16 — the first large multi-fuel. Discontinued and superseded by the Karu 2 Pro. It carried a 16-inch capacity, a 15 mm stone, a ViewFlame glass door, a mounted digital thermometer and dual-airflow management, at 62.6 lb. It still has an enthusiastic used-market following because it already combines a large chamber, a glass door and multi-fuel flexibility. The 2026 issue is parts: the legacy Karu 16 gas burner is not interchangeable with the Karu 2 Pro's, and that compatibility must be checked by exact oven generation rather than assumed from the word "Karu."
Ooni Pro 16 / Uuni Pro. The crowdfunded 2017 flagship, with an approximately 16-inch floor, roughly 48.5 lb, predominantly brushed stainless construction and a multi-piece cordierite floor. It is the direct ancestor of the Karu 16 and Karu 2 Pro. Used buyers should care more about completeness and parts availability than about a small difference in asking price — original stones, doors and fuel attachments are generation-specific enough that a cheap incomplete Pro becomes a restoration project.
Ooni 3 / Uuni 3. The 2017 pellet oven that the Fyra replaced, with a 13.2 × 13.2-inch stone, 430 stainless steel, ceramic-fibre insulation and about 11 kg unboxed. Ooni describes it as the world's first portable pellet-fired pizza oven. Its contemporary relevance is explaining the pellet lineage and helping secondhand buyers identify parts.
Uuni 2S and the original Uuni. The 2S, from 2016, is the revision that added a cordierite stone floor to the early pellet design, sharing a replacement-stone family with the Uuni 2, Ooni 3, Fyra 12 and Koda 12. Behind it sits the original 2012 Kickstarter lineage that created the category. Historical interest only — assume scarce model-specific components and prioritize completeness over price.
For anything in this section, the used pizza oven checklist — stone condition, burner and door completeness, generation-matching accessories, serial number and region — is the right starting point. If you end up needing a floor for a legacy model, the Ooni stone care and replacement guide maps sizes to ovens.
Ooni vs Gozney — The Honest Comparison
These are the two brands most buyers end up choosing between, and they optimize for different things.
Gozney's architecture leans on a lateral rolling flame that curves around the chamber instead of consuming usable floor space, and on thicker stones at the top of the range: the Arc Lite uses a 12 mm removable stone, the Arc and Arc XL use 20 mm, and the Dome Gen 2 and Dome XL Gen 2 use a 30 mm removable floor. The Dome Gen 2 also brings commercial-grade three-layer insulation, a digital console with floor and air temperature plus two meat probes, and more than 25 replaceable or serviceable components. The Roccbox packages a built-in underfloor thermometer and a professional-grade peel in the box, and the Arc Lite ships with a weather-resistant shelter.
Ooni answers with breadth and price reach. It covers the 12-inch portable class more widely, it owns the multi-fuel conversion concept across multiple sizes, and it is the only one of the two with an electric indoor oven. Ooni's G2 burner generation has narrowed the heat-distribution gap that first-generation Kodas had, and Ooni Connect brings ambient temperature, food-probe readings and app monitoring to a price tier where Gozney typically offers a digital thermometer. Accessory pricing and availability are generally broader on the Ooni side, which matters when you are buying a peel, a cover and a table on top of an oven.
Where each wins, practically: for a 12-inch portable oven, the Roccbox's built-in underfloor gauge and included peel are real advantages over a Koda 12, and the Gozney Tread at under 30 lb is a lighter premium compact than most of the field. For a 14-to-18-inch oven that will live on a table and cook several nights a week, the Koda 2, Koda 2 Pro and Karu 2 Pro are the more efficient spend. For a permanent outdoor kitchen with a large-format hybrid oven, Gozney's Dome Gen 2 and Dome XL Gen 2 sit above anything in Ooni's range in mass and insulation.
Blackstone occupies a third position entirely: freestanding propane systems with a rotating cordierite floor and a 2Stone heating design, sold as complete oven-and-cart packages. They compete on convenience and footprint rather than on peak craft. The three-way comparison covers that in full.
The Accessories That Actually Matter
Owner discussions converge on a priority order that is far more useful than buying everything with an Ooni logo on it.
1. A launch peel. Sized to the oven class — 12, 14 and 16-inch options are standard — and a peel slightly smaller than the oven's theoretical maximum gives more maneuvering margin. A launch peel and a turning peel do different jobs, and treating one as sufficient for both is one of the most common beginner mistakes. Our peel guide covers sizing and blade types; the Ooni turning peel is the one accessory virtually every owner ends up recommending.
2. An infrared thermometer. The single least optional "optional" accessory. Ambient and chamber temperature are not stone temperature, and that gap is the reason a supposedly 950°F oven produces pale bottoms. This is the first thing to check before blaming technique, and the thermometer guide covers the models worth owning.
3. A turning peel. Not day-one essential on a compact oven, but valuable at Neapolitan bake times when you are rotating every 20 to 30 seconds.
4. A model-specific cover. Fitted covers are generation-specific, and Ooni's guidance is explicit: the oven must be completely cool and dry before it is covered, and extended outdoor storage in harsh weather is not what a cover is for. New Koda 2 body sizes differ from first-generation Kodas, so fit needs verifying per model. The cover guide covers materials and pitfalls.
5. A stable table or cart. For the Koda 2 Pro and especially the Koda 2 Max, this is a bigger ownership consideration than most buyers expect — 66 lb and 95 lb respectively do not get moved casually, and both need a surface that is stable, heat-tolerant and large enough for the oven plus dough, toppings and a landing zone. The tables and stands guide covers the options.
6. The right fuel accessory. The Gas Burner for Ooni Karu 12, Karu 12G and Karu 2 fits those three ovens. The Karu 2 Pro uses a different dedicated burner. Verify before buying, especially secondhand.
Two clarifications that prevent expensive mistakes. The Ooni Connect Digital Temperature Hub is a Bluetooth ambient-temperature and food-probe device that syncs to the Ooni app. It supplements an infrared reading; it does not replace one, and it does not turn a manual gas oven into a thermostat. And the Ooni Pizza Steel 13 — 13.46 × 13.46 × 0.24 in, 430-grade stainless with a sandblasted finish, 11.51 lb — is a conventional home-oven accessory that Ooni explicitly states is not for use in an Ooni pizza oven. It exists to improve results in a kitchen oven, not to upgrade a Koda.
Warranty, Registration and Support
Ooni's standard warranty is one year, and the extension is not automatic. Registration within 60 days of purchase takes the Koda 12, Koda 16, Koda 2, Koda 2 Pro, Koda 2 Max, Karu 12, Karu 2, Karu 2 Pro and the legacy Fyra 12 to up to five years, and the Volt 2 to three years. The extension runs from the original purchase date; registering does not add years on top of year one. Proof of purchase and a serial number are required for claims, and the warranty transfers with proof of purchase if the oven is gifted.
What is excluded is worth reading before you buy, because several common complaints fall outside coverage: reasonable wear, discoloration and heat tarnishing, surface rust, water damage, salt-air and humidity damage, severe weather, user error, minor heat warping that does not prevent use, incorrect fuels, and use outside the country of purchase. Replacement parts inherit only the remaining original warranty period.
The one hard rule is modification. Ooni states that custom doors, flame guards and other oven modifications invalidate the warranty and can interfere with safe combustion and airflow — an oven's airflow design is not decorative. For a full walkthrough of registration, first-use seasoning and support channels, the Ooni setup and warranty guide is the reference.
Cordierite stone replacement is the most common support need across the range, and Ooni support is generally reported as responsive on it. If a stone cracks, the stone replacement guide maps replacement part numbers and dimensions to each oven, including the two-piece floors used by the Karu 16, Karu 2 Pro and Koda 2 Max.
Which Ooni Should You Buy?
Rankings resolve into recommendations by profile, and the profiles diverge sharply.
First oven, patio table, mostly weeknights. The Koda 2. The 14-inch floor and 15 mm stone are the two upgrades that matter over the Koda 12, and at 35 lb it still moves easily. If you want the absolute lowest friction and the lightest box, the Koda 12 remains a legitimate choice.
One oven, no compromises you will notice later. The Koda 2 Pro. Eighteen inches of deck, 20 mm stone, the G2 burner generation and Connect included. It is the oven most buyers land on after comparing everything.
You cook for groups and have a permanent spot. The Koda 2 Max. The two independently controlled zones and 24-inch deck are worth it only if you will use them, and its 95 lb means it stays where you put it.
Live fire is the point. The Karu 2 Pro for a household, the Karu 2 for a compact patio, the Karu 12 for learning the craft on a budget. Add the correct gas burner only if you will genuinely use it — and check the generation.
Indoors, or nowhere to put a propane tank. The Volt 2. It is the only current Ooni that solves that problem, and the trade-off is the noisiest owner feedback in the range.
Buying used. The Fyra 12, Volt 12 and Karu 16 are all still capable ovens. The deciding factors are parts availability, generation-matched accessories and completeness, in that order — and the used-oven checklist is the place to start.
Frequently Asked Questions
Q: How many pizza ovens does Ooni currently sell?
Nine in the U.S. catalog: five gas Koda models (Koda 2 Max, Koda 2 Pro, Koda 2, Koda 16, Koda 12), three multi-fuel Karu models (Karu 2 Pro, Karu 2, Karu 12) and one electric oven (Volt 2). There is no pellet oven in the current U.S. range.
Q: Is the Ooni Karu 2 the same oven as the Karu 12G?
Yes. Ooni states explicitly that the Karu 12G and the Karu 2 are identical, with the Karu 2 name applied under the generation-based naming system. They should be treated as one product at one price tier, not two models.
Q: Is the Ooni Fyra 12 discontinued?
It no longer appears in Ooni's current U.S. oven catalog, so it should be treated as a legacy model rather than a current recommendation. Remaining retailer stock and used units still circulate, and Ooni's accessories and pellets for it remain available. There is currently no pellet oven replacing it in the U.S. lineup.
Q: What is the difference between the Koda 2 and the Koda 2 Pro?
The Koda 2 has a 14-inch-plus floor, a 15 mm stone, a single G2 burner and weighs 35.3 lb; Ooni Connect is compatible but sold separately. The Koda 2 Pro has an 18-inch-plus deck, a 20 mm stone, twin G2 lateral burners, weighs 66 lb and includes the Connect hub with a food probe.
Q: Does the Koda 2 Pro have two independent cooking zones?
No. Only the Koda 2 Max has two independently controlled heat zones. The Koda 2 Pro has two burners, but their output is controlled together — you cannot set each side to a different cooking temperature.
Q: Can I convert an Ooni Karu to gas?
Yes, with the model-specific burner. The Gas Burner for Ooni Karu 12, Karu 12G and Karu 2 fits those three ovens. The Karu 2 Pro uses a different dedicated burner, and the legacy Karu 16 burner is not interchangeable with it. Use Ooni's approved hardware — unauthorized modifications can obstruct airflow, create combustion hazards and invalidate the warranty.
Q: Why does my oven show a high temperature but bake pale pizza bottoms?
Because the gauge and the Ooni Connect hub read ambient or chamber temperature, not the surface of the cooking stone. A stone that has not fully saturated can sit well below the air temperature around it. Measure the center of the stone with an infrared thermometer before launching, and allow recovery time between pizzas.
Q: Can I use the Ooni Pizza Steel 13 in an Ooni pizza oven?
No. The Pizza Steel 13 is a conventional home-oven accessory, optimized for oven temperatures up to 527°F, and Ooni states it is not for use in an Ooni pizza oven. For an Ooni, use the cordierite floor specified for your model.
Conclusion
Ooni's range is broader than it looks and narrower than the search results suggest. Nine active ovens, three fuel philosophies, and a naming convention that changed mid-stream and left a decade of legacy models sitting in the same search results as the current catalog. The practical upshot: the Koda 2 Pro is the safest single recommendation for most households, the Koda 2 is the smartest compact buy, the Karu 2 Pro is the answer if live fire matters, and the Volt 2 is a category of one for indoor cooks. Everything larger is a capacity decision, and everything smaller is a simplicity decision — neither is a quality decision.
Two habits will improve your results regardless of which oven you pick. Measure your stone with an infrared thermometer instead of trusting the clock, and register the oven within 60 days so the warranty extension actually applies. Those two things account for more owner satisfaction than the difference between any two models in this guide.
If you are still narrowing the field, start with the broader outdoor oven guide to see how Ooni sits against the rest of the market, then check the thermometer and accessory guides before you order — most first-time buyers underbudget the tools and overbudget the oven. And if you are weighing brands rather than models, the Ooni vs Gozney vs Blackstone comparison is the honest version of that argument.
