Two jobs: keeping food and selling it
Every commercial cabinet is designed first either to store or to display. Storage units — reach-ins, undercounters, chest freezers — have solid doors or lids, thick insulation and shelving built for crates and pans. Display units — visi coolers, multidecks, pastry and deli cases — have glass, lighting and shelving angled toward the customer. Glass lets in far more heat than an insulated panel, so a display unit spends more energy and holds a looser temperature. Using a display case as overnight storage, or hiding stock you want to sell inside a solid-door cabinet, both cost you money.
The main types at a glance
| Type | Usual band | Best for | Watch out for |
|---|---|---|---|
| Reach-in refrigerator | +2 to +8 °C | Bulk chilled stock in kitchens | Needs floor space and front clearance for doors |
| Reach-in freezer | −18 °C or colder | Frozen stock close to the kitchen | Frost build-up with frequent opening |
| Undercounter / worktop | +2 to +8 °C | Ingredients at the point of use | Sits beside the hottest equipment |
| Prep table (sandwich, salad, pizza) | +2 to +8 °C | Assembly lines with toppings in pans | Open pans on top warm up if lids stay open |
| Chef base | +2 to +8 °C | Drawers under griddles and grills | Top must be rated for the heat and weight |
| Visi cooler | +2 to +10 °C | Bottled drinks, packaged dairy | Glass door gains heat in sunlit shop fronts |
| Open multideck | Chilled | Self-service in large stores | Struggles in non-air-conditioned shops |
| Display case (pastry, deli, sushi) | Roughly +2 to +10 °C | Selling unwrapped food over a counter | Can dry out or sweat product |
| Chest deep freezer | −18 °C and colder | Frozen stock, ice cream | Bending to reach the bottom |
| Ultra-low freezer | −40 °C and colder | Long-hold seafood, specialist storage | Higher running cost; needs specialist service |
| Blast chiller / shock freezer | Process, not storage | Cooling cooked food quickly | Not a substitute for a storage fridge |
Kitchen storage: reach-ins, undercounters, prep tables and chef bases
Reach-ins are the upright workhorses of the back of house. They give the most storage per square metre of floor because they use height. Undercounters bring a small amount of chilled stock to the cook's station and add a worktop. Prep tables are undercounters with a refrigerated rail of food pans on top, so toppings sit within arm's reach while the base holds back-up stock. Chef bases are low, sturdy drawer units built to carry cooking equipment such as a griddle on top while keeping proteins chilled underneath.
Most kitchens need a mix: a reach-in as the pantry, and undercounters, prep tables or chef bases as the pockets on the line.
Retail and front-of-house: merchandisers and display cases
Visi coolers are upright glass-door cabinets for drinks and packaged dairy. Open multidecks drop the door altogether and rely on a curtain of cold air across the front, which makes shopping easy but needs a cool, air-conditioned store to work well. Serve-over display cases — for pastries, mithai, deli items, fish or sushi — keep unwrapped food behind glass on the staff side of the counter. Each display type is tuned to the product: a cake case manages humidity so cream does not crack, while a fish counter has to cope with melting ice and salt.
Freezers: chest, upright and ultra-low
Chest freezers lose less cold when opened because cold air is heavy and stays in the well. They are economical and forgiving of power cuts but take floor space and make the bottom layer hard to reach. Upright freezers save floor space and let you see stock at a glance, at the cost of more cold air spilling out each time the door opens. Ultra-low freezers run at −40 °C to −60 °C or colder for seafood that must keep its colour and texture, and for specialist storage where a regulator or programme sets the temperature.
Process equipment: blast chillers and shock freezers
A blast chiller is not a colder fridge. It uses high-velocity air and a large compressor to pull cooked food down through the temperature range where bacteria multiply fastest, then hands it over to normal storage. Putting hot food straight into a reach-in instead warms everything else in the cabinet and takes hours to cool the food itself. If you cook in batches for later service, a blast chiller is the piece that makes the rest of the cold chain safe.
When a room beats a cabinet
Once you need several large reach-ins in one place, a walk-in cold room built from insulated panels usually becomes the better option. It holds whole deliveries on pallets or racks and costs less per cubic metre of storage. Walk-ins need planning — floor, drainage, a condensing unit outside and a dedicated electrical supply — so they suit larger kitchens, central kitchens and distribution points.
How to narrow it down
- List what you store and the temperature each item needs; that splits chilled from frozen from display.
- Decide whether the unit must sell the product or only keep it; that splits glass from solid.
- Map where staff reach for each item during service; that decides reach-in versus point-of-use units.
- Check the room it will stand in — temperature, air-conditioning, humidity and dust — before short-listing models.
- Confirm the power available at that spot and who will service the unit in your city.
Frequently asked questions
- Can one unit do both storage and display?
- Only partly. A glass-door cooler can hold packaged stock it is also selling, but unwrapped food on display should go back to storage overnight, and bulk stock is better kept in a solid-door cabinet that loses less cold.
- Is a commercial refrigerator just a bigger domestic fridge?
- No. Commercial units use larger compressors, fan-assisted cooling and heavier hinges and gaskets so they recover temperature quickly after hundreds of door openings a day in a hot room.
