Frequently asked questions
Answers to the most common questions about combi ovens, Hoshizaki refrigeration, delivery, installation and service.
Combi ovens
What is a combi oven and how does it work?
A combi oven combines hot air and steam in one unit. You can prepare different dishes simultaneously without flavour transfer, while retaining moisture, texture and nutritional value. Modern combi ovens automatically regulate temperature, air circulation and humidity.
What is the difference between the Rational iCombi Pro and iCombi Classic?
The iCombi Pro has a self-learning system that recognises products and automatically adjusts processes. The iCombi Classic works with fixed programmes and manual operation. Both are reliable units. The difference lies in the degree of automation.
What is the difference between a combi oven and a convection oven?
A convection oven works with hot air only. A combi oven adds steam, which means you can apply far more cooking techniques and keep products moist. For professional kitchens a combi oven is almost always the better choice.
How much capacity do I need?
Rule of thumb: 6 trays for 30-60 covers, 10 trays for 60-120 covers, 20 trays for larger production or catering. When in doubt we always recommend going one model larger. A combi oven that is too small is the most common mistake.
What does a professional combi oven cost?
We deliberately do not publish Rational combi oven prices online. The price depends on model, configuration and installation. Request a no-obligation quote or schedule a kitchen check - we will give you a concrete offer.
Does a combi oven really save staff and costs?
Yes. Kitchens in practice report up to 50% time savings during preparation. Less dependence on experienced chefs, less food waste and lower energy costs. We are happy to calculate what that means for your specific situation.
How long does a Rational combi oven last?
With good maintenance a Rational combi oven lasts 15 to 20 years. The units are built for intensive daily use in professional kitchens. JMGT recommends periodic maintenance to maximise lifespan.
Can I lease or finance a Rational combi oven?
Yes, financing and operating lease are possible. Contact JMGT to discuss the options that suit your situation.
Hoshizaki refrigeration
Why Hoshizaki and not another brand?
Hoshizaki is one of the most reliable refrigeration brands for professional use. The units are built for frequent door opening, high loads and stable performance in warm kitchens. JMGT also carries a large Hoshizaki range from stock.
What is the difference between Hoshizaki Snowflake, Premier and Advance?
The Snowflake is built for the toughest conditions, including high ambient temperatures. The Premier is the most widely chosen all-round series for daily use. The Advance is aimed at high hygiene requirements in care and production environments.
What does a professional Hoshizaki refrigerator cost?
The price depends on series, size and configuration. JMGT creates a tailored quote based on your kitchen and situation. Request it directly via the quote form or schedule a kitchen check.
How quickly can JMGT deliver refrigeration?
JMGT carries a large Hoshizaki range directly from stock. In many cases delivery within a few working days is possible. Ask about current availability when requesting your quote.
Delivery and installation
Does JMGT also deliver to Germany?
Yes. For product sales we deliver throughout the Netherlands, to Belgium and to the German border region. For installation and projects we work primarily within a 50 km radius of the Achterhoek.
Is JMGT also active in Twente and Gelderland?
Yes. JMGT is based in Hengelo (Gelderland) and is intensively active in the Achterhoek, Twente and the rest of Gelderland. For on-site advice and installation we are quickly available in this area.
What is included in delivery?
By default we deliver the equipment including transport. Installation and commissioning are optional and quoted separately. We always recommend professional installation for optimal performance and to maintain warranty.
How long does delivery from stock take?
For products we have in stock, delivery is generally possible within 3-5 working days. The exact delivery time is stated in your quote.
What connections are required for a combi oven?
A combi oven requires a power or gas connection plus a water supply and drain. The exact specifications depend on the model. JMGT advises on technical requirements at the point of sale and checks whether your situation is suitable.
Service and maintenance
Which brands does JMGT service itself?
JMGT handles service and maintenance of Rational equipment itself. For all other brands we refer you to the manufacturer or their service network.
Do you repair third-party equipment?
No. JMGT does not carry out loose repairs on third-party equipment or individual spare parts. Our service runs through the sale - with direct manufacturer warranty on equipment purchased from us.
How often does a combi oven need servicing?
Rational recommends at least one service per year with intensive daily use. With heavy use or hard water a higher frequency may be needed. JMGT advises based on your usage profile.
What do I do in the event of a Rational fault?
Call JMGT directly: +31 575 46 40 02. We schedule a technician and help you as quickly as possible. For Rational we are an authorised service partner - no referral to a third party.
How do I arrange a maintenance visit?
Get in touch on +31 575 46 40 02 or info@jmgt.nl. We schedule an appointment at a time that suits you.
Your question is not listed?
Call us or send a message. We will give you an honest answer.
Ready for concrete advice?
A kitchen check takes 30 minutes and gives you a clear picture of the best investment for your situation.