Rational CombiMaster® (CM) - 20 x 1/1 GN, Electric
About this oven
The Rational CombiMaster® (CM) is a robust, manual-control combi oven designed for chefs who want full control, reliability and exceptional cooking performance every day. Built with Rational’s renowned engineering, the CombiMaster delivers perfect results across steam, convection and combination cooking — giving you the versatility to roast, bake, steam, grill, poach and regenerate all in one unit.
With durable stainless-steel construction, responsive manual dials and precise humidity and temperature control, the CombiMaster is ideal for kitchens that prefer hands-on operation without sacrificing quality or consistency. Its powerful fan system ensures even heat distribution, while the integrated steam generator delivers fast, clean steam for high-efficiency cooking.
Every CombiMaster supplied by CaterCombi is fully refurbished by manufacturer-trained engineers, including a deep clean, full service and comprehensive testing to guarantee dependable, commercial-grade performance from day one.
A perfect choice for restaurants, schools, pubs, care homes and catering operations looking for a reliable, cost-effective and easy-to-use combi oven
Features & capabilities
Full feature breakdown for this model.
| Feature | Detail |
|---|---|
| Temperature Range | ✓ 30°C–300°C |
| Cooking Modes | ✓ Three core modes: convection (dry heat), steam (100% humidity), and combination (simultaneous heat + steam) |
| Humidity / Steam Control | ✓ Manual |
| Programmable Cooking | ✓ No |
| Fan Speed Control | ✓ Fixed fan speed |
| Core Temperature Probe | ✓ Yes |
| Cleaning System | ✓ Semi automatic |
Tech Specs
Full technical specification pulled directly from product metafields.
| Product | |
| Make | Rational |
| Model | CombiMaster® (CM) |
| Type | 20 Grid |
| SKU | N/A |
| Condition | Professionally refurbished |
| Power & Electrical | |
| Power Supply | 3 Phase Electric |
| Supply Details | 3 Phase Electric - 37 kw load - 50/60Hz - 400V supplied with cable, direct hardwire recommended. Water & Drainage connection required. |
| Dimensions | |
| Dimensions (W×D×H) | 880mm wide x 800mm deep x 1800mm high |
| Warranty | |
| Warranty | 3 months Parts Warranty |
| Extended Warranty | Available on request — call 01227 469692 |
Delivery, collection & warranty
Everything you need to know before your oven arrives.
What every oven goes through before sale
- 57-point planned preventative maintenance (PPM) schedule by our qualified catering engineers
- Full service checklist provided — list of all parts changed available to keep
- Oven can be viewed working via video call or in-person at our Canterbury warehouse
- 3 months Parts Warranty included as standard
- Extended warranties available — call 01227 469692 for details
- Warranty valid only when installed by a fully qualified catering engineer per manufacturer guidelines
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