Rational Smart Combi Oven Technologies and Cooking Systems

Rational is a manufacturer founded in Germany in 1973 by Siegfried Meister, headquartered in Landsberg am Lech, developing thermal food preparation systems for professional kitchens. The company is known for focusing its production on a single product idea: the combi oven, which combines steam and hot air in the same cooking cabin. This focus has made Rational one of the best-known manufacturers worldwide in the combi steamer category.

Rational's current product range includes the iCombi Pro and iCombi Classic combi ovens, the iVario cooking system that combines the functions of a pot, tilting pan, and fryer in a single unit, and iHexagon, introduced in 2024, which adds microwave as a third heat source alongside steam and convection. Arlinoks closely follows this class of equipment, which sits at the center of the cooking line in industrial kitchen projects; purchasing for Rational product groups is carried out via the Mutfak10 sales platform operated by Arlinoks.

The Smart Cooking Approach That Defines Rational Combi Ovens

What sets Rational units apart from classic convection ovens is the software layer that manages the cooking process with sensors. iCookingSuite on the iCombi Pro automatically sets temperature, humidity, fan speed, and time once the user selects the product type and desired result; iDensityControl manages the cabin climate; and iProductionManager plans which shelves different products can be cooked on at the same time. The iCombi Classic offers the same body and cooking quality for kitchens that prefer manual control over automatic programs.

Both series are manufactured in electric and gas versions, in sizes ranging from 6-tray countertop models to floor-standing models with a capacity of 40 GN 1/1. The ConnectedCooking digital platform enables remote monitoring of multiple units, recipe transfer, and digital HACCP record-keeping; this feature is particularly used for standardization in chain businesses.

iCombi, iVario, and iHexagon: How the Product Families Divide Tasks

In Rational's product range, the iCombi series handles in-cabin cooking processes such as steaming, roasting, grilling, and baking, while the iVario covers tasks performed with contact heat or in liquid, such as boiling, sautéing, pressure cooking, and deep frying. When the two systems are planned together, they can replace a significant portion of a traditional range, kettle, pan, and fryer line. iHexagon is the newest device class, aimed at speed-focused businesses, using microwave support to shorten cooking times.

Key Features

• iCombi combi oven architecture that combines steam and convection in a single cabin, managing temperature, humidity, and fan speed with sensors
• iVario cooking system that combines the functions of a pot, tilting pan, fryer, and pressure cooker in a single unit
• iHexagon technology, introduced in 2024, using steam, hot air, and microwave together across six shelf levels
• ConnectedCooking platform enabling remote monitoring, recipe management, and digital HACCP record-keeping

How to Determine the Right Rational Model for Your Business

The first criterion in model selection is GN capacity, determined by daily portion count; 6-unit countertop models can be sufficient for small cafés, while kitchens producing mass catering move toward floor-standing models of 20 GN 1/1 and above. The second criterion is energy infrastructure: since the same models are offered with electric and gas connection options, the business's existing utilities and energy costs should be compared. The third criterion is whether automatic cooking programs are needed; in kitchens with experienced teams and a fixed menu, the iCombi Classic is a better fit, while in businesses with high staff turnover or a broad menu, the iCombi Pro is the more suitable choice. Prices also vary depending on these three variables — series, capacity, and energy type.

Rational Products on Mutfak10

Businesses wanting to compare current models, capacities, and prices of Rational combi ovens can review the Rational professional combi oven models page on the Mutfak10 sales platform operated by Arlinoks. A quote can be requested through Mutfak10 to determine the right configuration for your business among electric and gas iCombi models.

Frequently Asked Questions

What are the main differences between the Rational iCombi Pro and iCombi Classic?

The iCombi Pro is the fully automatic series, including iCookingSuite automatic cooking programs, iDensityControl climate management, and iProductionManager production planning functions; the iCombi Classic offers the same cabin technology with manual control. The Pro series suits kitchens wanting to standardize cooking results and with high staff turnover; the Classic series suits experienced teams that want to control the process themselves. Both series are manufactured in similar capacity ranges in electric and gas versions.

What types of businesses is the Rational iHexagon developed for?

iHexagon is a system aimed at shortening cooking times by an average of about 30 percent, adding microwave as a third heat source alongside steam and hot air. This design is aimed at quick-service restaurants, businesses with a busy lunch service, and kitchens that need to produce a high volume in a limited time. Because microwave support works simultaneously across all six shelf levels, there is no difference in results between shelves.

What criteria determine Rational industrial oven prices?

The main factors determining price are the series selected (iCombi Pro, iCombi Classic, or iHexagon), tray capacity (such as 6, 10, or 20 GN 1/1), energy type (electric or gas), and hardware options such as automatic washing. A Classic model of the same capacity is positioned more economically than a Pro model. Since current pricing and stock information vary by model, requesting a quote from the Mutfak10 sales platform is recommended for comparison.