The iCombi Classic from Rational AG - manual control, multi-level cooking for busy kitchens

Reviewed: ad hoc news New Release & Launch desk. Edited and checked on 2026-06-23, 19:06. Details in the imprint.

The iCombi Classic from Rational AG sits in the corner of a busy hotel kitchen, its stainless-steel door smeared with steam as a tray of roast vegetables crackles inside. A chef taps the tactile rotary knob with a flour-dusted hand, feeling the firm detent as he nudges the temperature up a few degrees. This is Rational’s more manual combi oven line, and it is built for people who want control as much as convenience.

What the iCombi Classic offers

The iCombi Classic is Rational’s straightforward combi-steamer series, available in multiple sizes from compact XS units to large 20-tray models for catering operations. It combines steam, convection heat and mixed modes in one chamber, letting kitchens bake, roast, grill and steam without swapping equipment. Chefs choose cooking climate, temperature and time via front-mounted knobs and a bright display, instead of deep menus.

Rational describes the iCombi Classic as capable of handling up to 300 meals per day in a single unit, depending on configuration and workflow. In practice, that means breakfast pastries, lunchtime vegetables and evening roasts coming out of the same machine, often in quick succession. Chef and Rational trainer Thomas Lang likes the way the unit responds when he changes fan speed mid-service, calling it a “robust workhorse you can feel under your fingers”.

Manual focus with smart help

Unlike Rational’s more automated iCombi Pro, the Classic line leans on manual settings with targeted assistance functions like humidity control and programmable cooking steps. Kitchens can store recipes and recall them via simple icons, but the oven does not try to decide everything on its own. That appeals to operators who have established cooking routines and want repeatable results without complex programming.

The chamber is fully stainless-steel with a smooth, wipe-friendly interior surface and integrated hand shower on many models, making cleaning straightforward after a service. When you open the door after a batch of roast chicken, the humid heat rolls out, and the dripping ceiling of the chamber shows how much steam the Classic can hold. The door handle feels solid and cool enough to grip even when the display shows more than 200 degrees Celsius.

Where it fits in Rational’s lineup

Rational positions the iCombi Classic as a combi oven for operations that value manual control and consistent performance over advanced automation. It sits alongside the more feature-rich iCombi Pro, which adds AI-assisted cooking paths and connectivity for remote monitoring. CEO Peter Wiedemann has described the company’s combi lines as “the backbone of many commercial kitchens worldwide”, with the Classic covering a large share of volume sales.

Many restaurants, canteens and hotel kitchens choose the Classic because staff turnover makes highly complex programming hard to sustain. A new chef can walk up to the panel, set temperature, humidity and time, and start cooking. That keeps training short and reduces the risk of errors during peak service when orders pile up and every minute counts.

Capacity, sizes and daily use

The iCombi Classic comes in several cabinet sizes, including compact 6-tray versions and larger 10- or 20-tray models tailored to catering and institutional kitchens. Each tray can hold standard gastronorm pans, so operators can move dishes between different appliances without repacking. In a school canteen, one 10-tray Classic can handle vegetables, fish and desserts in separate runs before lunch.

Rational specifies power ratings and connection requirements per model, with electric and gas variants allowing flexibility for new builds and retrofits. The units are typically plumbed into the water supply and drain, with built-in boiler or injection systems providing steam. When the steam mode kicks in, you hear a quiet hiss and see a thin mist swirl around the trays through the double-glazed door.

Cleaning and maintenance

Daily cleaning on the iCombi Classic involves using Rational’s cleaning agents and the integrated hand shower to rinse down the chamber walls and floor. Rounded interior corners and a removable rack help staff access grease-prone areas. After wiping, the metal feels smooth under a sponge, and there are no deep grooves to trap burnt-on residue.

Rational recommends regular descaling and filter maintenance where water hardness is high, especially for boiler-based steam systems. Service technicians can access key components behind front panels, and the control electronics are designed for the heat, steam and grease load typical of commercial kitchens. That robustness is important for operators who run the oven from early breakfast service until late-night banquets.

Pricing and availability

Pricing for the iCombi Classic varies by size and configuration, but industry listings put smaller 6-tray electric units in the mid four-digit euro range for the German market. Larger 10- and 20-tray models, especially gas variants, rise noticeably from there as capacity and accessories increase. Many dealers bundle installation, training and extended warranty into package offers rather than simple list prices.

Rational sells the iCombi Classic through its own sales organization and catering equipment dealers across Europe, North America and Asia. In Germany, buyers typically go through regional distributors or directly via Rational’s sales team. In other regions, such as the UK or USA, authorized partners provide site visits, configuration advice and after-sales service, often with demonstration kitchens where chefs can test dishes live.

How it compares to iCombi Pro

Compared with Rational’s iCombi Pro line, the Classic omits some advanced automation features like intelligent cooking paths, connected fleet management and energy-optimization algorithms. The Pro targets complex operations that want data-driven control and remote monitoring, while the Classic aims at kitchens that value direct, tactile operation. Both share the same basic combi-steamer concept and chamber quality.

For a mid-sized restaurant, the trade-off often comes down to staff skills and menu breadth. If the team is comfortable with programming and wants to run mixed loads with automatic doneness control, the Pro can make sense. If the chef prefers to decide every setting by hand, the Classic keeps things clearer and simpler, with fewer menu levels to learn.

Stock context

Rational AG, listed on the Frankfurt Stock Exchange, counts combi ovens like the iCombi Classic and iCombi Pro as central to its revenue base. The Rational AG share price (ISIN DE0007010803) trades on Xetra, reflecting investor expectations for ongoing professional kitchen equipment demand and global foodservice investment cycles.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.

en | DE0007010803 | RATIONAL | boerse | 69612483 | bgmi