A combi oven can roast, steam, bake, braise and reheat in one footprint, which is why so many Melbourne kitchens build their line around one. It is also one of the biggest single purchases in a fitout, and the wrong choice is expensive in both directions: too small and the chefs queue for oven space, too big and you pay to heat empty trays.
This guide walks through how combis work, how to pick the right size, gas versus electric, boiler versus boilerless, what the site needs, and what it really costs to buy and run one.
Key takeaways
- Choose size from your meals per day and your menu. A 6-tray suits most restaurants; 10 trays and up suit pubs, clubs and function kitchens.
- Electric models usually need three-phase power. Gas models need a gasfitter, a compliance certificate and an electrical outlet for the controls.
- Pick a boiler for steam-heavy cooking and a boilerless model for lower purchase price and water use.
- Budget for installation, water filtration and cleaning chemicals, not just the oven itself.
- Protect the oven from scale with the right water treatment, because scale causes most callouts.
- Refurbished can save 40 to 60%, but warranty windows are shorter, so ask what cover applies.
Choosing a Combi Oven: Six Questions to Answer First
Choosing a combi oven gets much simpler when you answer six questions in order. The menu and the meal count come first, because they set the size. Fuel, steam system and site services follow, because they set the model and the installation.
1. What will you cook in it?
A combination steamer, to give it its full name, cooks with dry convection heat, with steam, or with both at once. That third mode is the reason chefs love them. Moist heat keeps a roast juicy while dry heat browns the outside, and many operators report noticeably less shrinkage on meats than in a standard oven. A core temperature probe lets the oven cook to the centre temperature you set rather than to a timer.
List the dishes that will go through the oven each day. A bistro roasting meats and baking desserts uses combination and convection most. An aged care kitchen steaming vegetables and regenerating plated meals leans hard on steam. A bakery-cafe wants good steam injection for crusty bread. The mix tells you which features matter and which you can skip.
Beyond the three modes, a few features earn their price in most kitchens. Multi-point core probes find the coldest part of a large roast. Delta-T cooking keeps a set gap between cabinet and core temperature, which suits slow roasting. Cook and hold drops the oven to a holding temperature once the target is reached.
Saved programmes and photo menus let junior staff cook a signature dish exactly as the head chef set it up, and automatic cleaning saves an hour of scrubbing every night. Extras such as smoking, dehydrating or app connectivity suit some menus but are easy to pay for and never use, so match the control panel to how your team really works.
2. How many meals a day?
Size follows volume, so work from your busiest day rather than an average one. Count the plates that touch the oven: mains, roasted sides, steamed vegetables, desserts and any batch prep for the next day. Kitchens that cook ahead and hold, or run functions, need more capacity than the dining room alone suggests.
3. Which size and tray format?
Combis are sized by how many Gastronorm trays they hold. GN 1/1 is the standard 530 × 325 mm tray, and GN 2/1 is double width. Countertop compacts often take smaller GN 2/3 trays. The table gives a rough guide to what each size handles, but treat the meal counts as a starting point rather than a rule.
| Size | Tray capacity | Rough meals per day | Suits | Typical power (electric) |
|---|---|---|---|---|
| Compact countertop | 4 to 6 trays, often GN 2/3 | About 20 to 60 | Cafes, bars, small bistros | Some single-phase, many three-phase |
| 6 × GN 1/1 | 6 full-size trays | About 30 to 80 | Restaurants, cafes with a full kitchen | Usually three-phase |
| 10 × GN 1/1 | 10 full-size trays | About 80 to 150 | Busy restaurants, pubs, clubs | Three-phase |
| 6 or 10 × GN 2/1 | Double-width trays | About 60 to 300 | Hotels, function venues, large kitchens | Three-phase |
| 20 trays (roll-in) | Mobile trolley of 20 trays | 150 plus | Hospitals, aged care, production kitchens | Three-phase, dedicated supply |
On a phone, swipe sideways to see the full table.
Meals per day are a rough industry rule of thumb and depend heavily on your menu. Check power on the rating plate of the exact model.
Measure before you fall in love with a model. Allow clearance at the sides and back for ventilation and servicing, room for the door to swing fully open, and a stand or bench rated for the weight. Countertop units sitting on a stand with tray storage underneath are common in tight Melbourne kitchens.
4. Gas or electric?
Electric combis dominate the market and come in the widest range of sizes, but most full-size models need three-phase power. Gas models suit sites with a strong gas supply and limited electrical capacity, although they still need a standard outlet to run the controls, fans and cleaning system.
| Factor | Electric | Gas |
|---|---|---|
| Supply | Usually three-phase; some compacts run on single-phase | Gas line, plus a standard power point for controls and fans |
| Installation | Licensed electrician | Licensed gasfitter with compliance certificate, plus an electrician |
| Ventilation | Canopy, or a condensation hood option on some models | Canopy and flue arrangement to suit the gas appliance |
| Model choice | Widest range of sizes and features | Fewer models, mostly 6 trays and up |
| Running cost | Depends on your electricity tariff | Depends on your gas tariff, plus electricity for controls |
| Future fitouts | Suits all-electric kitchens | Check the site will keep a gas connection |
On a phone, swipe sideways to see the full table.
Any gas model must be installed by a licensed gasfitter, who issues a compliance certificate for the work. Energy Safe Victoria sets the rules for gas installations in commercial kitchens, and its guidance is worth reading before you commit to gas. If you are leasing, check with the landlord too, because more new commercial buildings in Victoria are being designed around all-electric kitchens. Browse our wider commercial cooking equipment range if the rest of your line is being planned at the same time.
5. Boiler or boilerless?
How the oven makes steam affects price, water use and maintenance. A boiler model has a dedicated steam generator, which delivers large volumes of steam and recovers quickly when the door is opened. A boilerless, or direct injection, model sprays water onto the heating system to create steam. It costs less, uses less water and has fewer parts to scale up, which suits most restaurants that cook mainly in combination mode.
| Feature | Boiler (steam generator) | Boilerless (direct injection) |
|---|---|---|
| How steam is made | A separate boiler produces steam | Water is sprayed onto the heating system |
| Steam volume | High, with fast recovery on heavy steam loads | Good for mixed cooking, less for constant steaming |
| Water use | Higher | Lower |
| Scale and upkeep | Boiler needs descaling and good water treatment | Simpler, but still needs water treatment |
| Purchase price | Higher | Lower |
| Best for | Steam-heavy menus, banquets, institutions | Most restaurants, cafes and pubs |
On a phone, swipe sideways to see the full table.
6. Is the site ready?
Every combi needs four services lined up before delivery: the right power or gas, a cold water supply with treatment, a drain, and ventilation. Water treatment is the one most often skimped on and the one that matters most, because minerals in the water build up as scale in boilers, on sensors and around steam injectors.
Melbourne’s water is relatively soft, but most manufacturers still specify a filter or softener, and scale damage can affect warranty claims.
Ventilation comes next. Opening the door releases a cloud of hot steam, so most installations sit under a canopy, and some electric models offer a condensation hood instead. Scalds from escaping steam and strains from lifting full trays are common combi injuries, and WorkSafe Victoria publishes guidance on managing both in hospitality.
Train staff to step back as the door opens. Our commercial kitchen setup checklist puts power, plumbing, drainage and ventilation in the right order for a fitout.
Forty Years of Hospitality Expertise, Since 1984
Since 1984 we have supplied the hospitality industry with professional advice, reliable equipment and excellent customer service. We have a wealth of experience in all types of projects ranging from international hotels to large and small pubs through to suburban restaurants and takeaway outlets. All our staff are equipped with the knowledge, expertise and creativity to add value to your project.
With combis, that experience shows in the questions we ask before quoting: how many trays you actually fill, what your water is like, and whether the switchboard can take another three-phase load. It is the difference between an oven that earns its place and one that sits half used. Learn who we are and how we work.
Free, obligation-free consultation
For your next project, visit our showroom or ask for someone to attend your premises, obligation-free. There’s no charge, no pressure, no follow-up sales call. Just our team walking your floor and giving straight answers about what fits.
Book your free consultationCombi Oven Costs: Buying, Installing and Running
The purchase price is only the first line of the budget. Installation, water treatment, cleaning chemicals, energy and servicing all add up over the life of the oven, and a cheaper model with poor water protection can cost more in the end than a dearer one looked after properly.
| Cost | What drives it | How to keep it down |
|---|---|---|
| Purchase | Size, boiler type, controls, gas or electric | Size to real meals per day and skip features you will not use |
| Installation | Three-phase upgrade, gas work, canopy, water and drain | Have the site checked before you order |
| Water treatment | Filter cartridges or a softener | Change filters on schedule; scale damage costs far more |
| Cleaning | Cleaning tablets or liquid for the auto-clean | Use lighter clean cycles when soil is light |
| Energy | Tariff, hours of use, door opening | Batch cook, and use overnight cook and hold |
| Servicing | Hours of use and water quality | Book an annual service and descale on time |
On a phone, swipe sideways to see the full table.
As a rough order, compact countertop models sit at the lower end of the market, 10-tray models in the middle and roll-in 20-tray units at the top, with boiler models and touchscreen programming adding to each band. For a firm figure, compare prices in our combi ovens range, shown inc GST and current at time of writing, or ask our team for a quote that includes installation.
A day in one combi oven
An illustration of how kitchens use a combi through the day. Your menu decides your own schedule.
Melbourne Refrigeration & Catering Equipment, supplying Australia’s hospitality industry since 1984
MRCE FAST FINANCE
Flexible, tailored kitchen equipment funding
Why rent when you can own? MRCE offers a flexible funding solution for commercial kitchen equipment, tailored to suit the hospitality industry.
- ✓No hidden costs
- ✓No balloon payment at the end
- ✓Claim the GST upfront at the start
- ✓Own the equipment from day one
- ✓Fast and streamlined approval
- ✓Funding options to suit your application
Matching a Combi to Your Kitchen
Cafes and small bistros
A cafe in Hawthorn or a bistro in Glen Waverley rarely has room for a full-size oven. A compact countertop combi can bake the morning pastries, roast the lunch special and reheat sauces without taking over the line. Check whether your chosen model runs on single-phase power, because that can save the cost of an electrical upgrade.
Bakery-cafes
A bakery-cafe in Ferntree Gully or Pakenham can use one oven for bread, croissants and sausage rolls in the morning, then switch to lunch roasts. Look for strong steam injection and an even fan, and check whether the oven takes 600 × 400 mm bakery trays if that is what your bakers already use.
Restaurants, pubs and clubs
This is where the 6-tray and 10-tray full-size models earn their keep. A pub in Footscray running schnitzels, roasts and a Sunday carvery, or a restaurant in Richmond with two sittings a night, will use every mode. Programmable recipes help a rotating kitchen team get the same result every service.
Hotels, function centres and caterers
Banquet work is about holding and regenerating large numbers of plates at once. Double-width and roll-in models load a full trolley of plated meals, bring them up to temperature together and send them out in one hit. Caterers in Dandenong and Springvale often pair a large combi with a blast chiller for cook-chill production.
Aged care, hospitals and schools
Institutional kitchens value steam, consistency and food safety records. Core probe logging and saved programmes make it easier to show that every batch reached its target temperature, and Food Standards Australia New Zealand guidance underpins most food safety programs in this sector. Boiler models often suit the high steam loads.
New or refurbished?
A well-maintained used combi can be a smart buy, especially for a second site or as a back-up oven. The saving on refurbished stock can reach 40 to 60%, offset by a shorter warranty, and with combis the service history counts for more than with most equipment. Ask for descaling and filter records, because a refurbished combi oven that has lived on untreated water may carry hidden scale damage.
| Question | Leans new | Leans refurbished |
|---|---|---|
| How central is it? | The main cooking appliance, used all day | Back-up oven, or a second site |
| How complex is it? | Boiler, touchscreen programmes, auto-clean | Simpler controls and fewer features |
| How tight is cashflow? | Finance spreads the cost of new | Saves 40 to 60% upfront |
| How long is the warranty? | Full manufacturer cover | Shorter window, so ask what applies |
| Service history? | Not applicable | Ask for records, especially descaling |
On a phone, swipe sideways to see the full table.
See what is available in our refurbished stock and on the second-hand commercial kitchen equipment page, compare it with our new equipment, and ask about warranty before you decide.
Cleaning, care and service
Most modern combis have an automatic cleaning cycle that runs with tablets or liquid detergent at the end of the day. Use it every day, because baked-on fat is harder and more expensive to remove later. Wipe the door seal and keep the drain clear, and watch the water filter indicator.
Book an annual service and stick to the descaling schedule for your model. When a fault does appear, we arrange qualified service technicians, because the oven at the heart of the line is the one appliance a kitchen cannot work around.
From Inception to Completion, End-to-End Project Management
From inception to design, throughout installation to completion, let our expert staff oversee your project. No matter how large or small, we work closely with architects and consultants on your commercial kitchen and bar requirements.
We arrange qualified service technicians for equipment problems whenever they crop up, a kitchen that’s down is a kitchen losing money. At MRCE we aim to keep our customers coming back as their business grows.
For a combi, that means checking the switchboard or gas supply, the water line, the drain and the canopy before the oven is ordered, then commissioning it properly so the chefs get training on day one.
When you add a second oven or a second venue, we already know your setup. Explore the complete MRCE catalogue as your kitchen grows.
Your Melbourne Source for the Right Combi Oven
For more than 40 years, kitchens from Cranbourne and Berwick to Box Hill and the CBD have come to our Station Street showroom in Dandenong, and we ship Australia-wide. Come in to compare compact and full-size models, look at tray formats and control panels, and talk through your power, gas, water and ventilation with a team that has fitted out kitchens since 1984.
We will help you choose a combi oven sized to your menu and your budget, and we will say so when a smaller model is enough.
Operators close by can see our Dandenong catering equipment and supplies page. To book a site visit or get a quote, reach out to our team. There is no charge and no obligation.
Questions, concerns, or need a hand?
Don’t hesitate to reach out. MRCE’s dedicated team is ready to provide the support you need: a quick technical question, a quote on a specific unit, a finance enquiry, or a full kitchen fitout. We’ll point you to the right answer, even if that’s not buying from us today.
Get in touch with our teamVisit, call, or email us
Showroom
15 Station Street
Dandenong, Victoria 3175
Australia-wide shipping available
Get in touch
Phone: (03) 9794 8627
Fax: (03) 9794 7258
Email: sales@melbournerefrigeration.com.au
Trading hours
Monday to Friday
Sales / Service: 9:00am to 5:00pm
Admin: 8:30am to 3:30pm
Saturday: By appointment only
Please call during the week to arrange. Closed on public holidays.
What we cover
Sales, finance, free consultation, installation, fitout management, after-sales service and 24/7 technical support.
Frequently Asked Questions (FAQs)
What size combi oven do I need?
Start with the number of meals you serve on your busiest day and the type of menu. As a rough guide, a 6-tray full-size model suits a restaurant serving up to about 80 meals a day, a 10-tray suits roughly 80 to 150, and double-width or 20-tray models suit larger venues and institutions. Steam-heavy and banquet menus push you up a size. Check the space, the power and the door swing too. If you are between sizes, a free site visit from our team will help you decide.
Is a gas or electric combi oven better?
Neither is better everywhere. Electric models offer the widest choice of sizes and features and suit all-electric fitouts, but most need three-phase power. Gas models suit sites with a good gas supply and limited electrical capacity, though they still need a power point for controls and fans, and installation must be done by a licensed gasfitter with a compliance certificate. Compare your site’s services and your energy tariffs before deciding.
Do I need a water filter for a combi oven?
Almost always, yes. Combi ovens turn water into steam, and the minerals left behind build up as scale in the boiler, on sensors and around steam injection points. Scale is one of the most common causes of breakdowns and can affect warranty cover. Most manufacturers specify water treatment for their ovens. Melbourne’s water is relatively soft, which helps, but filtration is still standard practice, so include it in your installation budget.
Can I finance a combi oven for my business?
Yes. MRCE offers a flexible funding solution for commercial kitchen equipment, tailored to suit the hospitality industry. There are no hidden costs and no balloon payment at the end, you can claim the GST upfront at the start, and you own the equipment from day one. Approval is fast and streamlined. Talk to our team and we will outline the funding options that suit your application, obligation-free.
How much does a combi oven cost?
Price depends on size, boiler or boilerless design, controls and whether you choose gas or electric. Compact countertop models sit at the lower end, 10-tray models in the middle, and roll-in 20-tray units at the top. Installation, water treatment and any power upgrade add to the total. Refurbished can save 40 to 60%, but warranty windows are shorter. Prices on our site are shown inc GST and are current at time of writing, so check the product page or ask our team for a quote.


0 Comments