Getting the size of a commercial fridge wrong is one of the most common and most expensive mistakes a kitchen fit-out makes. Too small, and staff are propping doors open, double-handling stock and running out of cold storage mid-service. Too large, and you are paying to run and maintain capacity you never use, while the extra footprint eats into prep space you needed instead.

The right size is not a single number pulled from a spec sheet. It comes from your menu, your delivery schedule, your busiest service and the shape of your kitchen itself. This guide walks through how Melbourne kitchens, from cafes to full-service restaurants, work out the commercial fridge size that actually fits how they operate.

Start With Your Menu, Not the Fridge Brochure

Before you look at a single model number, write down what actually needs to be cold. Count your menu lines, note how many of them need dedicated space (raw proteins kept separate from ready-to-eat food, for instance), and estimate how many serves of each you prepare for a typical service and for your busiest service of the week. A cafe doing coffee and a small cabinet menu has very different cold storage needs to a restaurant running a six course degustation, even if both kitchens are a similar size.

Delivery frequency matters just as much as menu size. A kitchen that receives stock daily can run leaner on cold storage than one that takes a single delivery every three or four days and needs to hold enough product to bridge that gap. If your supplier delivers early in the week only, size your fridge for Thursday night stock levels, not Tuesday morning ones.

Walk-In, Reach-In or Undercounter: Matching the Format

Once you know roughly how much cold storage you need, the next decision is format. Each one suits a different kitchen shape and service style, and most commercial kitchens in Melbourne end up running a mix rather than relying on a single large unit.

Walk-in cold rooms

A walk-in cold room suits a kitchen handling high volumes across many menu lines, such as a function centre, a busy pub kitchen or a central production kitchen supplying multiple sites. Walk-ins give you the most flexible shelving and the easiest access for bulk deliveries, but they need floor space, a clear path for the compressor’s heat to dissipate, and usually a drain. If you are planning a new fit-out around a walk-in, bring it into the layout early rather than trying to squeeze one in after the rest of the kitchen is designed. Our guide to setting up a commercial kitchen in Melbourne covers where a cold room typically sits in the running order of a fit-out.

Reach-in upright fridges

A reach-in upright fridge is the workhorse of most Melbourne kitchens, sized for a cafe, a mid-size restaurant or as a secondary unit alongside a walk-in in a larger operation. Single, double and triple door models scale the capacity without changing the footprint by much more than the extra door width, so it is often worth sizing one size up if your budget allows, rather than outgrowing the unit within a year. Browse the current range of upright fridges to compare door configurations against your kitchen plan.

Undercounter and bar fridges

Undercounter and bar fridges suit a station that needs cold product within arm’s reach rather than a walk across the kitchen, such as a pizza bench, a cocktail station or a dessert pass. They are rarely a kitchen’s only cold storage, but sizing them correctly still matters, since an undersized unit at a busy station becomes a bottleneck during service even if the walk-in down the hall has plenty of spare capacity. Our range of bar fridges and countertop refrigeration covers the smaller formats that suit these stations.

Sizing Calculations That Actually Hold Up in Service

Volume, not just shelf count

Shelf count is a rough guide at best, since the useful capacity of a fridge depends on how your product actually fits on each shelf. Gastronorm pans, crates and trays rarely fill a shelf edge to edge, so measure your actual containers against the internal dimensions of any model you are considering rather than trusting the litre rating on the spec sheet alone. A fridge rated for a generous litre capacity can still run short in practice if your containers are an awkward shape for its shelving.

Build in airflow space, not just storage space

Every fridge needs internal airflow to hold an even temperature, which means the usable capacity is always less than the raw internal volume. As a rough guide, plan to use no more than 80% of the rated capacity for actual stock, leaving the rest for air to circulate. A fridge that is packed to the door on delivery day leaves no room for this, and the result is usually an unevenly cooled cabinet with warm spots exactly where you do not want them, often near the door or at the back of a deep shelf.

Plan for growth, within reason

If you expect covers, catering orders or menu lines to grow over the next two to three years, it is often cheaper to size one step up now than to replace an undersized fridge later. This is not a licence to buy the largest unit on the floor regardless of need, since an oversized fridge running mostly empty still costs more to run than a correctly sized one. The sensible middle ground is sizing for your realistic growth, not your most optimistic projection, and asking your supplier which model sits one step above what you need today without a significant jump in running cost.

It is worth separating genuine growth planning from simply hedging against uncertainty. If you are opening a brand new venue with no trading history to draw on, talk to your supplier about similar venues they have fitted out, since they will have a feel for how a comparable kitchen’s needs evolved over its first two years. An existing kitchen upgrading its equipment has an easier task, because actual stock levels, actual delivery patterns and actual busy nights are already known quantities rather than estimates.

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.

Forty years means we have measured up more Melbourne kitchens than almost any other supplier in the state, and we have seen every version of the sizing mistake, from a walk-in too small for a function centre’s Saturday night to an upright fridge nobody can open fully because the door swing was never checked against the kitchen plan. You can read more about how we got here on our about page.

Clearance, Door Swing and the Details That Get Missed

A fridge that is the right internal size can still be the wrong choice for your kitchen if it does not physically fit. Measure the door swing against your walkway width, and check whether staff need to access the fridge while someone else is working at an adjacent station during service. A fridge door that blocks a walkway at the busiest point of the night is a hazard as well as a frustration, and it is worth checking WorkSafe Victoria’s guidance on safe clearances in commercial kitchens when planning your layout.

Compressor clearance is just as easy to overlook. Most manufacturers specify a minimum gap behind and above a unit so the compressor can expel heat properly, and a fridge pushed hard against a wall or shelving to save space will run harder, use more power and wear out sooner than one given the clearance it needs. Check the manufacturer’s installation guide for the exact figures for your model before you finalise the kitchen layout, not after the fridge has already been delivered.

The path the fridge takes to reach its final position is worth checking before delivery day too, not just the finished footprint. A walk-in cold room is usually built in panels on site, but a reach-in upright arrives as one solid unit, and a tight stairwell, a narrow service corridor or a doorway that looked fine on the floor plan can turn into a genuine problem on the morning of delivery. Measure the narrowest point of the path, including any turns, and share those measurements with your supplier before the unit is scheduled to arrive.

New, Refurbished or a Mix of Both

Once you know the sizes and formats you need, deciding between new and refurbished stock can stretch the budget further without compromising on capacity. A refurbished walk-in cold room or upright fridge can suit a secondary unit or a kitchen opening on a tight budget, while a new unit at your busiest station is often worth the extra spend for the longer warranty. Compare our refurbished stock against new commercial fridges once you have your sizing sorted, and read our wider guide on choosing the right commercial refrigeration for the features worth paying for.

Mixing new and refurbished across a single fit-out is common and sensible, rather than an all-or-nothing choice. A kitchen might run a new walk-in cold room, since it is the hardest and most expensive unit to replace later, alongside a refurbished undercounter fridge at a secondary station where a shorter warranty matters less. The right mix depends on which units carry the most risk if they fail during service, and your supplier should be able to help you weigh that up station by station rather than applying the same rule to every piece of equipment.

If you already have a rough size in mind but want a second opinion, our detailed guide on how to size a commercial fridge for your kitchen covers the step by step calculation in more depth, and our team is always happy to run through your numbers with you directly.

Running Costs and Food Safety at the Right Size

A correctly sized fridge is also a more efficient one. An undersized unit running at capacity works harder to recover temperature every time the door opens, while an oversized unit running near-empty wastes energy cooling space you are not using. Checking the energy rating of any model you shortlist gives you a genuine comparison of running cost between options of a similar size, which matters over the life of the unit far more than the sticker price on day one.

Correct sizing also supports food safety in a way that is easy to overlook. A fridge holding food at the right density, with air able to circulate properly, holds a more even temperature throughout, which matters for compliance with Food Standards Australia New Zealand guidance on safe food storage. An overstuffed fridge is more likely to have warm spots where temperature compliance slips, which is a food safety risk as much as an equipment one.

There is also a staffing cost to getting the size wrong that rarely shows up on a spec sheet. A fridge that is too small for service forces staff into extra trips back and forth to a second storage point, which slows prep and adds fatigue during a busy shift. A fridge that is awkwardly shaped for the space, even if the stated capacity is adequate, can mean staff working around a poor layout rather than through a well designed one. Both problems are avoidable with the same planning that gets the size right in the first place, which is one more reason to measure twice and order once.

Browse our wider range of commercial kitchen supplies we stock across Melbourne. When you are ready to talk through the sizing for your kitchen, get in touch with our team. It is free, there is no obligation, and there is no pressure.

Frequently Asked Questions (FAQs)