How a pass-through works
A pass-through refrigerator is a reach-in cabinet with doors on two opposite sides, usually built into a wall or a partition between two rooms. Shelves or trays can be reached from either side. Some are roll-in models that take whole trolleys of plated food or GN pans, so a banquet kitchen can load trolleys on one side and service staff wheel them out on the other.
The refrigeration system is usually on top or at the base and serves the whole cabinet. Controls are typically on one side only, so decide which side should own the settings.
Where pass-throughs earn their place
| Setting | Kitchen side | Other side |
|---|---|---|
| Hotel banquets | Plated cold starters and desserts loaded in advance | Service team collects at the moment of service |
| Central kitchens | Production loads finished items | Dispatch picks orders for outlets |
| Hospitals and institutions | Diet kitchen prepares trays | Ward staff collect without entering the kitchen |
| Restaurants with open counters | Prep loads salads, cold drinks or desserts | Front-of-house serves from the counter side |
| Food-processing hygiene zones | Raw or prep area | Clean or packing area |
Hygiene and separation
A pass-through acts as a buffer between areas with different hygiene requirements. Kitchen staff do not need to enter service areas, and service staff do not enter the kitchen, which reduces cross-contamination and traffic. In food processing and central kitchens, it can form part of the separation between raw and finished product, provided operating procedures support it. Decide which side is the 'clean' side and make sure staff understand the flow.
Planning the installation
- The wall opening must be planned with the civil and interior teams; retrofitting a pass-through through an existing wall is a building job.
- Fire and structural rules for the partition may apply; check with your architect or consultant.
- Make sure both sides have enough space for doors to open fully and for trolleys to manoeuvre.
- Plan where the refrigeration unit vents its heat and how technicians will access it for service.
- Provide power and, where needed, a drain point on the side where the unit is serviced.
Features to check
- Doors: solid for kitchen storage, glass on one side if service staff need to see stock, or half doors to reduce cold air loss.
- Locks on one or both sides to control who can remove stock.
- Shelving or tray slides that suit GN pans, sheet pans or banquet plates.
- Roll-in models: check trolley dimensions, floor level and ramp details.
- Door-open alarms, because doors on two sides double the chances of one being left open.
Operating rules that make it work
A pass-through only improves hygiene and flow if everyone uses it the same way. Write simple rules: which side loads and which side unloads, how items are labelled with time and contents, and who checks and records the temperature. In banquets, agree with the service team how long plated food may sit in the cabinet before it must be served or discarded, following your food-safety plan.
Train both teams together. Problems usually start when one side treats the cabinet as general storage, blocking shelves the other side needs, or when doors are left open because each team assumes the other will close them.
When a standard reach-in is better
If one team does both loading and unloading, or the two areas are not separated by a wall, a pass-through adds cost without much benefit. It also tends to be opened more often, from two sides, which increases air loss. For small kitchens where space is tight and the same cook both preps and serves, a standard reach-in or undercounter unit is usually the better choice.
Frequently asked questions
- Do pass-through refrigerators use more energy?
- They can, because there are more doors and more openings. Good gaskets, self-closing doors and door alarms keep the difference small.
- Can a pass-through be heated instead of refrigerated?
- Heated pass-through cabinets exist for hot food holding, but they are a different product. This guide covers refrigerated units.
