
Ninja 15 in 1 Review: Worth It? Pros, Cons & Comparison
If you’ve been eyeing a machine that promises to replace your slow cooker, air fryer, pressure cooker, and steamer, the Ninja Foodi MAX 15-in-1 probably caught your attention. With 15 cooking functions packed into a 7.5-litre pot that can handle a 3kg chicken, it looks like the ultimate kitchen multitool.
Cooking functions: 15 ·
Capacity: 7.5 litres ·
Serves: Up to 6 people ·
Max chicken weight: 3 kg ·
Modes: 3 (Combi-Steam, Pressure Cook, Air Fry) ·
Lid type: SmartLid
Quick snapshot
- 15 cooking functions including air fry, pressure cook, steam, and slow cook (Ninja Kitchen Ireland)
- 7.5L capacity serves up to 6 (Very Ireland)
- SmartLid system (3 modes: Combi-Steam, Pressure Cook, Air Fry) (Ninja Kitchen Ireland)
- Exact power consumption – not listed on official product pages (Very Ireland)
- Long-term durability – limited user reports beyond launch period (Very Ireland)
- Retail price varies significantly between Irish retailers (Very Ireland)
- Product remains current on official Ninja channels as of early 2025 (Ninja Kitchen Ireland)
- No successor model announced yet (Ninja Kitchen Ireland)
- Multi-cooker category continues to grow; expect more combi-steam models
- Best strategy: compare prices across Irish retailers before buying
| Specification | Detail |
|---|---|
| Model | OL750UK |
| Cooking Functions | 15 |
| Capacity | 7.5 litres |
| Serves | Up to 6 people |
| Max Chicken Weight | 3 kg |
| Modes | 3 (Combi-Steam, Pressure Cook, Air Fry) |
| Lid | SmartLid (one lid for all modes) |
Is Ninja 15 in 1 worth it?
What are the pros and cons?
Upsides
- 15 functions replace multiple appliances – saves counter space (Ninja Kitchen Ireland)
- SmartLid eliminates lid swapping (Katykicker)
- Digital cooking probe ensures precise results (Katykicker)
- 7.5L capacity suits families of up to 6 (Very Ireland)
Downsides
- Price premium over 14-in-1 models – extra functions may not justify cost for occasional cooks
- Learning curve for Combi-Steam mode (YouTube review)
- Bulkier than standalone air fryers (35 × 36 × 36 cm) (Very Ireland)
- Accessories like extra trays sold separately
How does it compare to alternatives?
A direct comparison with the 14-in-1 model reveals the key difference: the 15-in-1 adds Combi-Steam functions (steam meals, steam air fry, steam roast, steam bake, steam bread) that the 14-in-1 lacks. Versus (comparison platform) notes that the 15-in-1 has exactly one more function, but the Combi-Steam mode represents a meaningful upgrade for those who want moist cooking. For most households, the decision hinges on whether you’ll use the steam-combination modes enough to justify the higher price.
The implication: the 15-in-1 adds real utility for steam-focused cooks, but price-sensitive buyers may not miss the extra modes.
What do reviews say?
“The digital cooking probe is a standout feature – it stops cooking when your food reaches the exact temperature you set.”
“The SmartLid slider is intuitive: you just slide to select Pressure Cook, Combi-Steamer, or Air Fryer – no fumbling with heavy lids.”
Early hands-on accounts praise the build quality and the even cooking results, especially in Combi-Steam mode. No major durability complaints have surfaced, but the product is still relatively new on the market.
The implication: early adopters are satisfied, but long-term reliability data is still thin. For cautious buyers, a 2-year warranty (check your retailer) offers some peace of mind.
What does the Ninja 15 in 1 do?
What cooking modes are available?
The 15 functions span: Pressure Cook, Air Fry, Grill, Bake, Dehydrate, Prove, Sear/Sauté, Steam, Slow Cook, Yogurt, Steam Meals, Steam Air Fry, Steam Bake, Steam Bread, and Steam Roast (Very Ireland). The core innovation is the Combi-Steam sub‑menu, which blends steam with dry heat for faster, moister results.
How does the SmartLid work?
The single lid uses a sliding mechanism to switch between three operating modes: Pressure Cook (locked, pressurised), Combi-Steamer (steam vent open), and Air Fry (fan and heating element engaged). A YouTube review demonstrates that the slider locks each mode securely, preventing accidental swaps during cooking.
What is the capacity?
The main pot holds 7.5 litres, which Ninja Kitchen Ireland (official Irish store) says can serve up to 6 people and accommodate a 3kg whole chicken. Dimensions of the unit are 35 cm × 36 cm × 36 cm (Very Ireland).
The 7.5L pot is large enough for a family roast but consumes only a 36-cm footprint – smaller than most standalone air fryers of similar capacity.
The pattern: the SmartLid system is the engineering highlight, combining three appliance modes into one sealed unit that saves both counter space and hassle.
What can you cook in Ninja 15 in 1?
What are popular recipes?
- Whole roast chicken (steam-roast mode keeps breast moist while crisping skin)
- Air-fried chips (use the Air Fry function at 200°C for 15-20 minutes)
- Steamed fish and vegetables (Steam or Combi-Steam)
- Pressure-cooked stews and curries (tender in under 30 minutes)
- Yogurt (Prove function at 43°C for 8-12 hours)
According to Katykicker, the digital probe is especially helpful for roasts: set the target internal temperature, and the cooker stops automatically.
Can you air fry chips?
Yes. The Air Fry mode reaches up to 240°C, producing crispy chips with minimal oil. Use a single layer for best results.
Can you steam vegetables?
Absolutely. The Steam function works without pressure, ideal for broccoli, green beans, and carrots. The Combi-Steam mode adds a convection fan for faster, more even steaming.
The pattern: versatility is the headline. This machine handles nearly every cooking technique home cooks use, but mastering each mode takes a few attempts.
What is the difference between Ninja 15 in 1 and 14 in 1?
What extra functions does the 15-in-1 have?
The 14-in-1 model (e.g., Ninja Foodi 14-in-1 SMART XL) lacks the Combi-Steam sub‑menu. That means no Steam Air Fry, Steam Bake, Steam Bread, Steam Roast, or Steam Meals. The 15-in‑1 also includes a digital cooking probe, which the older model does not have (Versus).
Which should you buy?
If you bake bread, roast whole chickens, or enjoy experimenting with steam-convection cooking, the 15-in-1 is the better choice. If your cooking revolves around air frying, pressure cooking, and slow cooking, the 14-in-1 delivers the same results for a lower price.
The key differences come down to three areas: cooking modes, probe, and lid design.
| Feature | Ninja 15-in-1 (OL750UK) | Ninja 14-in-1 (earlier model) |
|---|---|---|
| Cooking Functions | 15 (includes Combi-Steam) | 14 (no Combi-Steam) |
| Capacity | 7.5 L | 7.5 L (or 8 qt) |
| Digital Probe | Yes | No |
| Lid System | SmartLid slider | Separate pressure and air fry lids |
| Price (approx.) | €200–€250 | €160–€200 |
The trade-off: you pay roughly €50 more for steam-combination cooking and the convenience of a single lid. Whether that’s worth it depends entirely on how often you cook foods that benefit from moist heat.
What cannot be cooked in a Ninja air fryer?
While the Ninja 15-in-1 is exceptionally versatile, some foods don’t work well in air fry mode – and the same limitations apply to any air fryer. Katykicker advises against wet batters (they drip), large amounts of cheese (it melts and burns), and leafy greens (they blow around and wilt unevenly). Also avoid popcorn (won’t pop) and whole roasts that exceed the basket capacity.
For the Ninja 15-in-1 specifically, the pressure cook function should not be used with high‑foam foods like pasta or rice without enough liquid – standard safety precautions apply.
- Wet batter (e.g., tempura) – use oven instead
- Large cheese loads – melts and sticks to heating element
- Raw leafy greens – dry out or fly into fan
- Whole eggs in shell – risk of explosion
- Popcorn kernels – insufficient heat distribution
The catch: air fryers are wonderful for many things, but they aren’t deep fryers. Knowing these limits helps you avoid messy failures and disappointment.
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For a closer look at how the Ninja Creami line fits into your kitchen routine, our Ninja Creami ice cream maker review breaks down the preparation time and texture quality you can expect.
Frequently asked questions
Why are some people getting rid of air fryers and does this affect the Ninja 15 in 1?
Some users sell air fryers because they don’t use them enough, not because of quality issues. The Ninja 15-in-1’s versatility – slow cook, pressure cook, steam – means it’s more likely to stay in regular rotation.
What is the best price for the Ninja 15 in 1?
Prices vary by retailer. Check Very Ireland, Harvey Norman, and Currys for discounts. As of early 2025, expect €200–€250.
Where can I buy the Ninja 15 in 1 in Ireland?
Ninja Kitchen Ireland ships directly; other retailers include Very Ireland, Harvey Norman, Euronics, and selected Tesco stores.
Does the Ninja 15 in 1 come with a recipe book?
Yes, the box includes a quick-start guide and a recipe book with 15+ recipes designed for the various functions.
How do I clean the Ninja 15 in 1?
The pot and accessories are dishwasher safe. The lid and sealing ring should be wiped clean after each use. Refer to the manual for detailed care instructions.
What is the warranty on the Ninja 15 in 1?
Ninja offers a 2-year warranty on the OL750UK when purchased from an authorised retailer. Register your product online to activate.
Can you use the Ninja 15 in 1 without the lid?
No – the SmartLid must be attached for all cooking functions; it houses the heating element and fan. The machine cannot operate as an open pot.