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Instant Omni Plus 18L Air Fryer Toaster Oven

One of the few ovens in the category that publishes its interior in liters and states a temperature range, which makes it the easiest here to compare on paper. The rotisserie is real hardware, and the 450F ceiling is the one number to check against what you cook.

By Stephen V.Updated How we rank
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We earn a commission if you buy through our links. It does not change the price you pay, and it does not decide our picks — the scoring rubric is published in full, including what disqualifies an oven. How this works.

The short answer

Quick picks

#OvenBest forScorePrice
01Wattage not published
6.9
$204.99Amazon

#ad · Prices pulled live from the Amazon Product API, last checked Aug 8, 2026. Where we have no verified live price we show none — we would rather leave a gap than print a number that has gone stale. The wattage column is what the manufacturer publishes; “not published” means exactly that, and we have not estimated one. Scores are ours, compiled from published specifications, and are not test results.

Why it is easy to reason about

Most large ovens describe their interior with an adjective — “XL” — and leave you guessing. Instant Brands publishes 18 liters, which you can convert and line up directly against a Breville's cubic foot, and a temperature range of 170 to 450F, which matters if you proof dough or slow-cook. Ten functions include a rotisserie that is a genuine mechanical addition rather than a relabeled fan setting. For a site built on checkable numbers, an oven that states its volume and its range plainly is a pleasure to write about.

The number the documentation does not include

Wattage. Instant Brands publishes no power figure on the product page, so — consistent with the rule this whole site runs on — this oven gets no running-cost figure from us rather than a borrowed one. That is the honest gap: we can tell you exactly how much air it heats and exactly how hot, but not what that costs, because the manufacturer does not say. If a checkable running cost is what you are after, a fully specified model like the Panasonic FlashXpress is the oven for you.

The 450F ceiling

This is the specification to hold against your own cooking. Several ovens on the site reach 500F, and that last fifty degrees is exactly where a thin pizza crust and a hard finish on roast vegetables live. At 450F the Omni Plus does everything else well — roasting, baking, dehydrating, the rotisserie — but if high-heat pizza is a weekly event, read that number twice. The rotisserie, meanwhile, is the kind of feature that gets used twice and then admired; buy the oven for the published interior and the range, not the spit.

Who should buy it

The cook who wants a large, versatile oven and values knowing its interior volume and temperature range before it arrives, and who cooks mostly at or below 450F. It sits in the middle of the market on price and near the top on documentation, which is an unusual and welcome combination. See it against the other rotisserie ovens, or the wider field in the large-capacity roundup.

In detail

The full spec

01
Instant Brands Instant Pot Omni Plus 19QT/18L Toaster Oven Air Fryer, 10-in-1

Rotisserie without a separate machine

Instant Pot Omni Plus 19QT/18L Toaster Oven Air Fryer, 10-in-1

Interior volume publishedNo published wattage
6.9/10

One of the few ovens here that publishes its interior in liters, which makes it the easiest in the category to compare on paper. The rotisserie is a genuine mechanical addition rather than a relabeled fan setting.

Power
5
Usable space
8.5
Footprint
6.5
Documentation
7
Value
7.5

What it gets right

  • 18 liters stated plainly, so you can compare it to a Breville's cubic foot without converting a marketing claim
  • A published temperature range, which is rarer than it should be and matters if you proof dough
  • The rotisserie spit is real hardware, not a preset

What it doesn't

  • Instant Brands publishes no wattage on the product page, so this oven gets no running-cost figure from us
  • 450°F is a low ceiling — several ovens here reach 500°F, which matters for pizza and for a hard finish on roast vegetables
  • Rotisserie is the kind of feature that gets used twice

What it costs to run

Instant Brands publishes no wattage for this oven in any document we could find, so we do not show a running-cost figure for it. We are not going to estimate one from a similar model. Here is the method we would have used.

Skip this if…

you bake pizza at high heat. The published ceiling is 450°F, and that is fifty degrees short of where a thin crust actually wants to be.

$204.99on Amazon

Price last checked Aug 8, 2026. Prices move constantly — Amazon's at checkout is the one that counts.

#ad · we may earn a commission from this link to Instant Pot Omni Plus 19QT/18L Toaster Oven Air Fryer, 10-in-1

How we picked

Ovens we claim to have cooked in: 0

Everyone in this category tells you they roasted forty chickens. We have roasted none, and we say so. Here is what we do instead: read the manufacturer's manual and spec sheet, record the published wattage, interior volume, temperature range and warranty term, work out what the oven costs to run for an hour and for a year, show the arithmetic so you can redo it with your own electricity rate, and cite all of it. Where a brand publishes no wattage, we print no running cost rather than borrowing a number from a similar model. Prices come live from Amazon's API and disappear rather than go stale.

The scores above are judgments from that documented research — not test results. One of the five metrics is Documentation: whether the manufacturer will tell you what its oven draws at all. The full rubric, including what disqualifies an oven, is published in full.

Questions

Frequently asked

How big is the Instant Omni Plus inside?
Instant Brands publishes 18 liters (a 19-quart model), which is one of the few plainly stated interior volumes in the category -- roughly 0.6 cubic feet, so you can compare it directly against ovens quoted in cubic feet rather than converting an adjective.
What temperature does the Instant Omni Plus reach?
Its published range is 170 to 450F. That covers roasting, baking, dehydrating and proofing, but it is fifty degrees short of the 500F that a thin pizza crust and a hard vegetable finish want -- worth checking if high-heat cooking is a weekly event for you.

Keep reading

Receipts

Sources

We have not cooked in these ovens and we do not pretend to have. Specifications come from the manufacturer's own published documents; electricity rates come from the US Energy Information Administration; prices come from the live Amazon API. Where a figure is not published, the page says “not published” rather than guessing. Read the full method.