Refrigerated truck transport moves chilled and frozen goods in an insulated body with a refrigeration unit that holds a set temperature, typically −18°C or colder for frozen, 0–4°C for chilled, and 2–8°C for many pharmaceuticals. The truck maintains temperature. It does not pull it down. So cargo must be pre-cooled, loaded fast and kept closed between drops.
In Malaysia’s heat, a cold chain can fail in minutes on a loading bay. Most temperature excursions happen at the handover points: a pallet waiting on a dock, a door left open during a long multi-drop, a truck loaded before it reached temperature. The refrigeration unit is rarely the problem. This guide covers temperature ranges, how to prepare cargo and trucks, and the checks that keep the chain unbroken from cold room to customer.
Temperature Ranges by Product
| Range | Typical products |
|---|---|
| Frozen: −18°C or colder | Frozen meat, seafood, ice cream, frozen ready meals |
| Chilled: about 0 to 4°C | Fresh meat and poultry, dairy, fresh seafood |
| Pharma cold: 2 to 8°C | Vaccines, insulin, many biologics and medicines |
| Cool: about 8 to 15°C | Some fruit and vegetables, flowers, chocolate |
| Controlled ambient: about 15 to 25°C | Many pharmaceuticals and some confectionery |
Always use the manufacturer’s or regulator’s specification for your product, not a general category. “Chilled” means different things to a dairy producer and a pharmaceutical distributor.
Why Reefer Trucks Maintain, Not Cool
A refrigerated truck’s unit is sized to remove heat that leaks in through the walls and doors, not the heat stored in warm cargo. Load product at 25°C into a chilled truck and it will take hours to come down, while the outer cartons sit out of range and the unit runs flat out. The rule is simple: product goes in at its transport temperature, straight from a cold room or blast freezer.
Preparing the Truck
- Pre-cool the body to the set point before loading, with the doors closed.
- Check the set point against the product requirement and the delivery documents.
- Clean the interior: food and pharmaceuticals need a clean, odour-free body.
- Check the airflow: air chutes and bulkheads in place, and floor channels clear.
Loading for Airflow
Cold air has to circulate around the load to carry heat away:
- Leave a gap at the front, below the unit, and at the rear doors.
- Do not stack above the load line or block the return air.
- Use pallets so air can flow underneath.
- Load and unload quickly, ideally through an enclosed, chilled dock with a dock seal.
Where Cold Chains Break
| Risk point | Control |
|---|---|
| Product loaded warm | Check product temperature at loading and refuse out-of-range pallets |
| Pallets waiting on an open dock | Stage in the cold room and load only when the truck is at the door |
| Frequent door openings on multi-drop routes | Plan drop sequence, use strip curtains, and keep each stop short |
| Receiver not ready | Book a delivery slot and confirm before departure |
| Unit failure or fuel run-out | Maintenance schedule and monitoring during transit |
| Mixed temperature products | Separate trucks or a multi-compartment truck |
Monitoring and Records
Temperature records are your evidence that the chain held. Common approaches are:
- the truck unit’s own temperature display and log;
- independent data loggers placed in the load;
- a check of product core or surface temperature at loading and at delivery, recorded on the delivery note.
For pharmaceuticals, distributors are expected to follow Good Distribution Practice (GDP), which requires documented temperature control and excursion handling. For halal food, the transport and storage stages should keep products segregated as required by the halal assurance standards your customers follow.
Packaging for Temperature-Controlled Cargo
The truck controls the air. The packaging controls how fast the product reacts to it, and to every door opening. Match packaging to the product and the route:
- Frozen goods: sturdy cartons that hold up in sub-zero conditions, palletised and stretch-wrapped, but not so tightly that cold air cannot reach the load.
- Chilled fresh products: ventilated cartons for produce that needs airflow, and sealed packs for meat and dairy to avoid cross-contamination.
- Pharmaceuticals: validated insulated shippers for small quantities on multi-drop routes, so a door opening does not take the product out of range.
- Labelling: the temperature range printed on every carton, so warehouse and delivery staff know at a glance where it belongs.
Condensation is a common side effect when chilled cartons meet humid air at delivery. Use moisture-resistant cartons and unload straight into the receiver’s cold room.
Single Drop vs Multi-Drop
A single-drop chartered refrigerated truck (FTL) gives the most control: one loading, one unloading and minimal door openings. Multi-drop routes, such as supplying several outlets in the Klang Valley, are efficient but each stop lets heat in. Keep routes tight, sequence drops so that the most sensitive products are delivered first, and keep stops brief. Our comparison of FTL vs LTL lorry transport covers the wider trade-off.
Cold Chain Beyond the Truck
The road leg is one link. Frozen or chilled products also move through cold rooms, port reefer plugs and air cargo terminals. For perishables flying to Sabah and Sarawak, see our guide to air freight to East Malaysia. Agricultural products may also need permits, covered in our MAQIS permit guide.
Questions to Ask a Refrigerated Transport Provider
- What temperature ranges can your trucks hold, and are they single or multi-compartment?
- Do you pre-cool trucks before loading as standard?
- How is temperature monitored in transit, and can you share the records?
- What happens if a unit fails mid-route?
- What payload and pallet capacity does each refrigerated truck have?
- Do you cover our routes, delivery windows and receiving requirements?
Refrigerated Transport with De Hubs
De Hubs’ lorry transport fleet includes refrigerated trucks with temperature control systems for chilled and frozen goods, such as food, pharmaceuticals and other temperature-sensitive cargo, so products arrive in the right condition. We serve food and beverage, pharmaceutical, hypermarket and retail customers across West Malaysia. Tell us the required temperature range, your cargo and your route, and we will plan the right truck.
Frequently Asked Questions
What temperature does a refrigerated truck keep?
Refrigerated trucks can keep a set temperature range, commonly frozen at around −18°C or colder, chilled at about 0 to 4°C, and 2 to 8°C for many pharmaceuticals. Tell your transporter the exact range your product needs.
Can a refrigerated truck cool down warm cargo?
Not reliably. Refrigerated trucks are designed to maintain temperature, not pull it down. Cargo should be pre-cooled or frozen to its required temperature before loading.
Can chilled and frozen goods travel in the same truck?
Only in a multi-temperature truck with separate compartments. In a single-compartment truck, products with different temperature ranges should not be mixed.
What is a cold chain break?
A cold chain break is any point where the product leaves its required temperature range, most often during loading, unloading, dock waiting or frequent door openings on multi-drop routes.
Does De Hubs offer refrigerated transport?
Yes. De Hubs’ refrigerated trucks have temperature control systems for chilled or frozen goods such as food and pharmaceuticals across West Malaysia.