Rational iCombi Pro models vary by rack count (20, 10, or 6 rack levels), tray width (full or half-size), and power type (electric, natural gas, or liquid propane). Examples:

• iCombi Pro 20 Full-Size, Electric 208/240V 3-Phase
• iCombi Pro 6 Full-Size, Natural Gas 120V 1-Phase

Step 1: Match based on daily meal volume

• 20 Full-Size: 300–500 meals/day
• 10 Full-Size or 20 Half-Size: 150–300 meals/day
• 6 Full-Size or 10 Half-Size: 80–150 meals/day
• 6 Half-Size or XS: Under 80–100 meals/day

Step 2: Consider tray size and kitchen layout

• Full-Size: Holds a full-size sheet pan or two hotel pans side-by-side. Best if horizontal space allows.
• Half-Size: Holds one hotel pan per rack. Narrower footprint; can stack vertically in tight spaces.

Step 3: Match your utility access

• Gas (Natural or LP): Preferred if your kitchen is already set up for gas.
• Electric: Common in newer buildings with gas restrictions or all-electric mandates.

Need confirmation before ordering? Call us at (866) 696 8688. We can also schedule a pre-install site check to verify fit and utilities before shipment.

The core difference is how the unit generates heat:

• Gas models (Natural Gas or LP) use a gas burner to create steam and heat. They’re typically faster to reach temperature and are ideal for kitchens with an existing gas line.
• Electric models use internal heating elements instead of burners. They’re often used in all-electric buildings or locations with gas restrictions.

Cooking performance is identical. The choice depends on your utility setup.

Important: Both gas and electric models still require an electrical connection for controls, fan motors, and cleaning systems. For example:

• Electric models typically require 208/240V, 3-phase power.
• Gas models typically require 208/240V, 1-phase power for electrical components.

It’s important to confirm both your gas availability and your electrical panel spec (voltage and phase) before ordering. If you're unsure, we can help verify it with a quick site check or installer review.

Yes, because it solves problems convection ovens can’t. A Rational controls temperature, steam, and airflow in real time, so you get consistent results without constant oversight.

• Prevents shrinkage and overcooking with built-in humidity control
• Cooks evenly across every rack. No tray rotation, no cold zones
• Runs programmed recipes with exact timing, temp, and fan settings
• Handles mixed loads without flavor crossover or manual adjustment
• Replaces your convection oven, steamer, and proof box in one unit

If your kitchen is juggling volume, labor, and menu variety, this isn’t an upgrade — it’s a different category.

Rational ovens are built for heavy daily use and are known for reliability. But like any commercial equipment, they do require maintenance to stay that way.

Most issues come from two things: skipped clean cycles or poor water quality. If you run the automatic cleaning program as scheduled and connect to the right water filtration system, it’s common to go years without needing a service call.

That said, this is still high-performance equipment. If something does need attention, most parts are modular and serviceable by Rational-certified technicians. Repairs are typically straightforward and downtime is minimal when issues are caught early.

Preventive maintenance is available through Rational’s service network if you want ongoing checkups, but it’s not required.

Rational ovens clean themselves automatically. You just load a cleaning tab, choose the cycle, and it handles the rest — including descaling and rinsing.

You’ll typically run a cleaning cycle once per day at the end of service. If you’re in lighter use or running low-temp steam-only programs, you can skip a day occasionally. The oven tracks usage and tells you exactly when it needs cleaning.

The cleaning system is fully closed: no chemicals to handle manually, no scrubbing required. It takes 30–90 minutes depending on the cycle you choose (light, medium, or heavy), and can be scheduled to run overnight.

As long as you follow the prompts and use the right water filtration, it stays clean without becoming a maintenance issue.

Most combi ovens can steam, roast, and bake. The difference with Rational is how well it does those things at scale, without constant oversight, calibration, or guesswork.

Rational is designed for high daily use in real kitchens. You get:

• Consistent results across every rack, every shift, every operator
• Automated cleaning, self-diagnostics, and program control that cut downtime and labor
• A global service network with fast parts and trained techs in every major region
• A system that actually gets used, not one that sits idle because it's too complicated or unreliable

If you’re just testing combi cooking, cheaper models can work. But if this oven is going to be part of your daily workflow, Rational is the one that holds up under pressure — and pays back over time.