Open kitchens are a powerful drawcard for Australian cafés, restaurants, pubs, clubs and catering venues. Guests can see the craft, the colour and the energy of service. But an open kitchen also removes the buffer that a wall once provided. Heat, steam, cooking odours and fan noise can travel straight to the table. A combi oven is one of the most useful pieces of equipment in a modern kitchen, yet it can be one of the most demanding to hood correctly because it produces both grease-laden vapour and visible steam. Planning the hooding early — before fit-out drawings are locked in — is the practical way to keep the room comfortable for guests while giving the kitchen the extraction it needs.
Why Combi Ovens Demand a More Careful Hooding Strategy Than a Standard Range
A combi oven can switch between convection, steam and combination modes, so its exhaust profile changes through the day. In convection mode it behaves like a hot-air oven, releasing heat and some grease vapour. In steam mode it releases a visible, humid plume. In combination mode it does both at once. When the door is opened during a busy service, that plume can escape quickly and rise toward the ceiling. In an open kitchen, there is often no full ceiling bulkhead or wall to contain it, so the canopy must be positioned and sized to capture that burst before it reaches guests.
The first planning decision is the hood type and its relationship to the oven. An island canopy may suit a central open kitchen, while a wall-mounted canopy or a low-profile hood may work better along a back wall. The key is capture velocity at the oven door and around the appliance, not just a large canopy with a big fan. A combi oven stacked above another oven, or installed beside a fryer or grill, adds heat load and grease load to the same hood. The hood plan should reflect the whole cooking line, not only the combi unit in isolation.
Access matters too. Filters, fire suppression nozzles and duct connections need to be reachable for cleaning and service. In an open kitchen, guests can see the canopy, so its finish, lighting and proportions form part of the interior design. A stainless-steel canopy with integrated lighting may look purposeful, but it still needs the right internal baffles, grease channels and drainage. Grease filters should be easy to remove without a ladder balanced over a service counter. If the canopy is purely decorative, or undersized for the steam and grease load, the venue will feel the consequences in the dining room rather than just in the kitchen.
Australian venues also need to consider local council requirements and relevant Australian Standards for commercial kitchen ventilation. The exact requirements vary by site and project, so early advice from a ventilation specialist, building certifier and equipment supplier is worthwhile. For NSW operators, from inner-city cafés to suburban clubs, the aim is the same: design the hood around the real cooking processes, the oven’s door swing and the guest sightlines, then confirm the details before the ceiling is closed up.
Balancing Extraction, Make-Up Air and Noise So Guests Stay Comfortable
Extraction is only half of the ventilation story. A hood cannot keep removing air unless replacement air is introduced somewhere. Without a planned make-up air strategy, the kitchen and dining room can fall into negative pressure. That can cause doors to whistle or drag, odours to migrate from the kitchen, and the hood to lose efficiency. In an open kitchen, the symptoms are more obvious because guests are sitting close to the cooking line. They may feel a draught on the back of the neck, notice cooking smells in the dining area, or hear the extraction system labouring.
Make-up air should be introduced away from the hood and away from seated guests where possible. Ceiling diffusers, displacement outlets or dedicated supply paths can work, but the supply air may need tempering in both summer and winter. In a Western Sydney heatwave or a cool morning in the Southern Highlands, untempered make-up air can make the dining room uncomfortable even when the air conditioning is running. The HVAC design and the kitchen exhaust design need to be coordinated, because a combi oven adds both sensible heat and moisture. That latent load is easy to overlook when the venue is being planned around a standard oven line.
Noise is another guest-comfort issue that is often left too late. Extraction fans, supply fans and duct velocity all contribute to background noise. In an open kitchen, there may be no ceiling void to absorb sound, and hard finishes can amplify it. Fan selection, acoustic attenuation and duct routing should be considered together. A short, direct duct run with fewer bends is generally easier to balance and clean than a long, winding route. If the duct must pass over a dining area, the way it is insulated and supported can affect both noise and heat transfer.
Equipment selection and hood planning should move forward together. If the kitchen is adding a new combi unit, check the dimensions, door swing and clearance requirements early, and review the Commercial oven specifications alongside the hood drawings so the canopy is sized for the actual appliance rather than an assumed footprint. This is also the stage to confirm whether the hood needs integrated fire suppression, how filters will be cleaned, and whether the duct route can be accessed for future maintenance. For bakery and café operators using steam injection, the moisture load deserves specific attention; for pubs and clubs doing roasts and bulk cookery, the grease load is just as important. The goal is a balanced system that extracts efficiently without turning the dining room into an uncomfortable extension of the kitchen.
Commissioning, Maintenance and Practical Checks for Busy Hospitality Venues
Even a well-planned hooding system needs commissioning and maintenance to stay comfortable. Commissioning should include a practical check of extraction performance, make-up air balance, noise levels and any visible steam or odour spill. A smoke test or steam test at the oven door can reveal whether the canopy captures the plume during a door-open event, not just when the kitchen is idle. Air balance should be checked with the kitchen in normal operating mode, because extraction and supply interact differently when exhaust fans, air conditioning and internal doors are all working together.
Maintenance is where many open kitchens quietly lose performance. Grease filters need a regular cleaning schedule, and the hood, plenum and duct need periodic inspection by a competent person. Fire suppression systems require routine inspection and servicing. Fans and belts need attention. If access panels are hidden above a decorative ceiling or behind a fixed bulkhead, maintenance becomes harder and more likely to be deferred. During the planning stage, it is worth walking through how a technician would reach the duct, filters and fan, and how cleaning would be carried out without disrupting service.
Different venue types face different pressure points. A café using a combi oven for breakfast pastries and lunch service may notice steam spill more than heavy grease. A bakery with steam injection may need to manage humidity near the front counter. A pub or club with an open kitchen and a large roast program may need robust grease capture and a clear filter-cleaning routine. A catering kitchen may run the combi oven in bursts, so the hood needs to respond quickly when the door opens. In each case, the practical answer is to match the hood and air balance to the real menu and service pattern, not to a generic drawing.
For hospitality operators planning a new fit-out or upgrading an existing open kitchen, the most useful early move is to bring the equipment, ventilation and building professionals together before the design is finalised. Confirm the combi oven model and stacking arrangement, agree the hood type and extraction path, plan make-up air and noise control, and check service access. Venues across New South Wales can then enter service with a kitchen that looks open and inviting, rather than one that forces guests to move tables because the room is too hot, too steamy or too noisy.
