Ninja Foodi Review UK 2026

Key specifications

Capacity and Size

A practical way to judge the air fryer is by its capacity, since the cooking functions matter only when the pot and basket can handle the meal size. This model is listed as a 6L multi-cooker, so it suits family portions more than single-serve cooking. Its size is best assessed in terms of what fits inside the main bowl, because the lid and cooking inserts affect usable space. For larger roasts, stacked ingredients, or thick cuts, allow extra clearance so food turns or cooks evenly.

Cooking Performance and Functions

Cooking performance on the Ninja is assessed by how consistently it delivers different results across its listed cooking functions, including Pressure Cook, Air Fry, Slow Cook, and Grill. Pressure Cook is intended for faster tenderising, while Air Fry is designed to crisp foods without using a conventional oven. Slow Cook focuses on steady, low heat for longer meals, and Grill supports browning for meats and vegetables. Pre-planning cook steps is recommended, with the expectation of minor trial and error.

Single or Dual Zone

For most meal prep, the biggest question is whether this model uses one cooking area or two separate zones, because that changes how many different foods can cook at once and how well they match each other's needs. The air fryer, a 6L 9-in-1 multi cooker, is not described as having dual cooking zones in the provided facts, so it should be treated as a single cooking chamber. That means it can handle one main dish style at a time, then switch functions such as pressure cook, air fry, or slow cook. It suits coordinated batches, but it does not support simultaneous cooking of foods with very different requirements.

Ease of Use and Controls

Ease of use matters because multi cookers can feel simple at first, but they still require a little learning to achieve consistent results. This air fryer includes 9 cooking functions spanning pressure cook, air fry, slow cook, grill, and more, so the right mode needs to be selected before cooking begins. The controls are typically organised around mode selection, then time and temperature style inputs, followed by a confirmation step. Switching between functions may mean checking the basic guidance, since each programme behaves differently. For the 6L capacity, portions should be planned in advance, and trial runs are needed to find settings that suit preferences.

Cleaning and Maintenance

Cleaning and Maintenance matters because a multi cooker that's used often needs consistent care to keep performance predictable and smells under control. After cooking, unplug the Foodi 9-in-1 multi cooker and allow it to cool. Remove the inner pot and accessories for washing. Wipe surfaces with warm, soapy water, then soak stubborn spots briefly before scrubbing. Brushed steel parts need gentle cleaning to avoid streaks. Dry all pieces fully, since dampness can create odours. If grease builds up around the lid area, wipe it carefully, then check that air circulation is not obstructed.

Noise and Energy Use

Noise and energy use will vary by which cooking function the Ninja Foodi OP350UK is running, because pressure cooking, air frying, and grilling apply heat and airflow differently. The unit produces different operating noise levels across its cooking functions, with airflow and heating contributing to the sound during use. Pressure cooking is often quieter than air frying, since the main cooking action is sealed heat rather than strong circulation. Air frying and grilling can sound louder during active cycles, particularly when the fan is running at higher output. Energy use depends on cook time and temperature, so longer programmes such as slow cook typically draw more overall.

Who Is This Air Fryer For?

This model is best suited to people who want a single countertop appliance that does more than air frying. The Ninja is a 6L 9-in-1 multi cooker with nine cooking functions, including pressure cook, air fry, slow cook, and grill. The 6L capacity suits households that cook for several people, since it supports batch cooking. It also fits busy cooks who prefer switching between cooking modes in one place, rather than using separate appliances for frying, grilling, and slow cooking. If a household only needs basic, occasional air frying, the additional functions may feel unnecessary.

Where to Buy in the UK

Where can the air fryer be bought in the UK? Shoppers can look for the Ninja through major UK retailers that stock The air fryer (SharkNinja) appliances, including air fryer and multi-cooker ranges such as Amazon UK, John Lewis, Currys, AO and Argos. When searching listings for the 6L "Foodi 9-in-1 Multi Cooker", buyers should confirm the specific OP350UK model, as similar This air fryer models may vary in functions such as pressure cook, air fry, slow cook and grill. After finding a matching listing, it is important to check delivery options and returns, as availability can vary by region and stock.