Rational iVario vs combi oven:
when do you need which system?
Both come from Rational, both automate the kitchen — but they do fundamentally different things. The iCombi is an oven. The iVario is a cooking system. The question is not which is better, but when you need which.
By Jos Menting, owner JMGT Commercial Kitchen Technology - 7 July 2026 - 8 min read
Key points
- iVario = cooking system: frying, boiling, braising, sous-vide, pressure cooking
- iCombi = oven: baking, roasting, steaming, regenerating portions
- They complement each other — neither replaces the other
- iVario replaces tilting pan, steam kettle, braising pan and pressure cooker in one unit
- For small kitchens: start with the iCombi, add the iVario when volume justifies it
Two systems, two tasks
Rational makes two fundamentally different commercial kitchen appliances. The iCombi (Pro and Classic) is an oven: it circulates hot air, injects steam and combines both. The iVario is a cooking system with a heated pan: it sears, boils, braises and cooks sous-vide at precision temperature.
The confusion arises because both are described as "the engine of the modern kitchen" and both automate strongly. The question is always: which preparations do you make the most hours per day? That determines which system to invest in first.
What does the iVario do?
Searing & frying
High power and contact temperature for browning. Steak, poultry, fish — with full Maillard reaction.
Boiling
Stocks, soups, pasta in large volumes at constant temperature without boiling over.
Braising
Long and low: braised meats, ragout, ossobuco. Automatic temperature management without monitoring.
Sous-vide
Precision to 0.1°C in the bath — more accurate than most dedicated sous-vide equipment.
Pressure cooking
Cooking time up to 70% shorter under pressure. Ideal for pulses, bones, hard vegetables.
Frying in oil
Direct base heating for oil-based preparations. Less oil consumption, higher capacity than a dedicated fryer.
Comparison at a glance
Do I need both?
In a fully automated large kitchen the combination is ideal. The iVario handles foundations (stocks, sauces, braises, sous-vide pre-production), the iCombi finalises portions (baking, roasting, regenerating). For smaller kitchens the iCombi is usually the first step. The iVario follows once volume justifies it — typically at 150+ covers per shift or intensive batch production.
Frequently asked questions
Can the iVario replace the iCombi Pro?
No. The iVario and iCombi complement each other — they do not compete. The iVario is a cooking system for frying, boiling, braising and sous-vide. It has no hot air circulation and cannot bake or roast. The iCombi is an oven for baking, roasting, steaming and regenerating. Every function one excels at, the other cannot do.
What size iVario do I need?
Rational offers the iVario in two sizes: the 2-2/1 (effective volume approx. 50 litres, for medium-sized kitchens) and the 4-2/1 (approx. 100 litres, for large kitchens and catering operations). Rule of thumb: calculate your peak volume per shift and choose the size that handles it comfortably.
Can I do sous-vide preparations in the iVario?
Yes. The iVario maintains water temperatures to within 0.1 degrees Celsius — more accurately than most dedicated sous-vide equipment. You work directly in the pan without an external water bath. This is one of the strongest use cases for the iVario in fine dining and batch pre-production.
Does the iVario replace a tilting frying pan?
Completely. The iVario has a tiltable pan with a heated base and can handle high temperatures for searing and browning. Additionally it can boil, braise and cook sous-vide — functions a traditional tilting pan does not have. In practice the iVario replaces four to five separate traditional appliances.
Does a modern commercial kitchen need both an iVario and an iCombi?
For a fully automated large kitchen the combination is ideal: the iVario handles foundations (stocks, sauces, braises, sous-vide), the iCombi finalises portions (baking, roasting, regenerating). For smaller kitchens the iCombi is usually the first step — it covers the most common tasks. The iVario follows once volume justifies it, typically at 150+ covers per shift.
Which system fits your kitchen?
We advise based on your production volume and kitchen layout. Honest advice, no sales pressure.