Design decisions that matter
Different products need different temperatures and humidity. Fresh produce, dairy and frozen goods rarely share one chamber well, so plan the number of rooms around what you will store.
Freezer floors need special care. Without proper insulation and ground protection, the soil below can freeze and lift the slab over time. Your designer should specify the floor build-up for each chamber.
Think about how stock moves in and out. A covered loading area with dock seals keeps warm air out when doors open, and an anteroom between the dock and the chambers helps hold temperature steady. Plan space for pallets, handling equipment and sorting, so staff are not forced to work inside the coldest rooms for longer than needed. Drainage for defrost water and cleaning should also be designed in from the start.
- Temperature and humidity for each product
- Number and size of chambers
- Floor insulation for freezer rooms
- Loading frequency and door arrangement
Power, backup and approvals
Refrigeration runs around the clock, so a reliable power supply and backup generator are essential. Plan the electrical connection and backup capacity at design stage, and ask how the system will restart after an outage.
Drawings should be signed by a registered architect (PCATP) and structural engineer (PEC). Depending on location, approval may come from the estate management, LDA, a TMA or another authority. Food storage may also need to meet food authority rules. Confirm the current requirements before building.
Choosing contractors and checking quality
Cold storage often involves a civil contractor, a panel installer and a refrigeration specialist. Decide whether one main contractor will coordinate them all, or whether you will manage each separately. Single-point responsibility usually makes problems easier to resolve.
Ask to see working cold stores the team has built. Check panel joints, door seals, ice build-up and how evenly temperature holds across the room.
Before handover, run the system for a trial period and record temperatures in different parts of each chamber. Only load stock once readings are stable.
Ask for a maintenance plan for compressors, condensers and door seals, and make sure your staff are trained on the controls and alarms. Cold stores fail quietly at night more often than anyone expects, so a temperature alarm that calls a phone is a sensible addition.
Consider energy use from the start. Well-sealed panels, a loading dock that limits door opening time and condensers placed in shade all help keep running costs down.