Whether you run a winery in Margaret River, a café in Dunsborough or a supermarket in Bunbury, your refrigeration storage plays a vital role in keeping stock safe and your business running.
Getting the layout right from day one protects your stock, cuts energy consumption and makes life easier for your staff.
In this guide, we walk through the key factors to consider, from temperature requirements and cold room design to equipment placement and long-term maintenance.
Why Your Commercial Refrigeration Layout Matters
Commercial refrigeration is one of the biggest energy users in many industries, from hospitality and retail to wine production and food processing. A poorly planned layout makes your refrigeration equipment work harder than it needs to, which leads to high energy costs, uneven temperatures and a greater risk of product spoilage.
A well-designed layout, on the other hand, delivers:
- Lower operating costs, because refrigeration units aren’t fighting heat from ovens, sunlit walls or other equipment
- Better temperature control, so food and stock stay at a consistent, safe temperature
- Faster workflow, with cold rooms located close to delivery and prep areas
- Easier compliance with food safety requirements
- Room to grow, so you can add storage capacity in the future without starting again
Start With Your Temperature Requirements
Before you sketch a floor plan, list everything you need to store and the specific temperature each product needs. Different stock has very different temperature requirements, and grouping products correctly is the foundation of an efficient layout.
| Storage type | Typical temperature range | Common uses |
| Cool rooms | 0°C to 4°C | Fresh produce, dairy, meat, prepared meals |
| Freezer rooms | -18°C to -20°C | Frozen goods, ice cream, bulk meat |
| Display fridges | 2°C to 5°C | Customer-facing drinks and grab-and-go food |
Under Australian food safety standards, potentially hazardous food stored chilled must generally be kept at 5°C or below, unless a safe alternative temperature control system is demonstrated. Frozen food must stay frozen. Your layout should make those targets easy to maintain, even during busy service periods when doors are opening frequently.
Getting Temperature and Humidity Right
Temperature is only half the story. Temperature and humidity work together, and the right balance depends on what you’re storing. Leafy greens and fresh flowers need higher humidity to stop them drying out, while cured meats, cheese and wine each have their own ideal conditions.
Moist air entering the room, damaged insulation and unsuitable operating conditions increase the risk of condensation, mould, ice build-up and packaging damage. Too little humidity dries out produce and shortens shelf life. Good cold room design manages humidity through correct evaporator selection, airflow and door seals, so your stock stays in peak condition.
Cold Room Design: Sizing for Storage Capacity and Space Availability
The right size cold room balances storage capacity with space availability. Too small and you’ll be overfilling shelves, blocking airflow and struggling to maintain temperature. Too large and the empty space will cost you year-round.
When planning your cold room design, consider:
- Peak stock levels. A café in the summer holidays needs far more cold storage than in July.
- Shelving and access, including aisle widths for trolleys, pallet jacks and staff.
- Door placement and type, such as strip curtains, self-closing doors or air curtains to limit warm air entering.
- Insulated panel thickness, which affects heat gain and long-term running costs.
- Floor construction, especially for freezer rooms where heated floors or insulated slabs may be needed to prevent ground frost heave.
- LED lighting, which gives off far less heat than older lighting and helps reduce energy consumption.
Planning Freezer Rooms Alongside Cold Rooms
If you need both chilled and frozen storage, placing freezer rooms next to or inside cold rooms is often the most cost-effective approach. Entering a freezer through a cool room creates a buffer zone that reduces warm air infiltration, ice build-up on the evaporator and wasted energy.
This arrangement also shortens the distance staff travel with frozen goods and can allow shared walls and refrigeration infrastructure, lowering both build and operating costs.
Choosing the Right Refrigeration System
Every refrigeration system works on the same basic process. A compressor pumps refrigerant around a closed circuit. Inside the cold room, the evaporator absorbs heat as liquid refrigerant turns to gas. Outside, the condenser releases that heat into the surrounding air.
The main options for commercial refrigeration include:
- Self-contained (plug-in) units, which suit display fridges and smaller cool rooms
- Split systems, where the condensing unit sits outside and the evaporator sits inside the room, keeping heat and noise away from your workspace
- Centralised or multi-room systems, which serve several cold rooms and freezer rooms from one plant and suit larger operations like supermarkets and wineries
The best choice depends on your temperature requirements, the number of rooms, your building and your budget. We’ll help you weigh up upfront cost against long-term efficiency.
Where to Position Your Refrigeration Units
Where your refrigeration units are located has a big impact on overall efficiency. Condensing units need plenty of fresh air to reject heat. If they’re boxed in, sitting in direct afternoon sun or crammed beside other equipment, they run hotter, work longer and wear out sooner.
As a rule:
- Mount condensing units in a shaded, well-ventilated spot with clear airflow around them
- Keep them away from kitchen exhausts, hot water systems and other cooling equipment that dumps heat
- Allow safe, easy access for maintenance and testing
- Choose corrosion-resistant coatings where salt air is a factor, which is common along the Geographe Bay coast
Ambient conditions in the South West vary a lot between a mild winter and a 40°C summer heatwave, so units need to be sized and positioned for the hottest days, not the average ones.
Designing Refrigerators for Energy Efficiency
Refrigeration runs 24 hours a day, so small, energy-efficient design choices add up to big savings over the life of the equipment. Here are some of the most effective ways to reduce energy consumption:
- Variable speed drives on compressors and fans let the system match its output to demand, instead of running flat out and cycling on and off
- Electronically commutated (EC) fans on evaporators and condensers use less power and give off less heat
- Well-sealed doors, strip curtains and door alarms stop cold air escaping when doors are left open
- Good insulation in walls, ceilings and floors limits heat gain
- LED lighting with sensors so lights are only on when someone is inside
- Smart defrost controls that only defrost the evaporator when needed
- Correct sizing, because an oversized or undersized system wastes energy and wears out faster
For many South West businesses facing high energy costs, these measures can make a noticeable difference to monthly power bills, while also improving temperature control and protecting stock.
Operational Factors to Plan Around
The best layouts reflect how your business actually works day to day. Think about these operational factors early:
- Workflow: Place cold storage close to where deliveries arrive and where food is prepped, so stock spends less time at room temperature.
- Door traffic: If staff go in and out frequently, consider a reach-in fridge or display unit for high-use items to keep the main cold room closed.
- Safety: Cold rooms and freezer rooms need internal release handles, emergency lighting, alarms and non-slip flooring.
- Existing infrastructure: Check your power supply, drainage for condensate and structural capacity before you commit to a design.
- Future growth: Leave space and electrical capacity to add another room or extra refrigeration equipment later.
Plan Your Commercial Refrigeration Layout With Busselton Air
A well-planned commercial refrigeration layout protects your stock, lowers your operating costs and keeps your business running.
Busselton Air has been designing, installing and servicing commercial refrigeration across Busselton, Bunbury, Dunsborough, Margaret River and Capel since 1994. Explore our commercial refrigeration solutions or get in touch to book a site assessment today!