The answer depends on your cargo, route, and budget. This guide breaks down the real costs and performance trade-offs.
How They Work
Reefer containers are actively cooled — they have a built-in refrigeration unit that maintains a set temperature by consuming power. They’re highly effective but expensive, and they need power throughout the journey.
Container thermal liners are passive insulation — they line the interior walls, ceiling, floor, and door of a standard dry container with reflective foil insulation. They don’t cool the cargo; they slow down the rate at which external heat enters (or internal cold escapes).
Think of a reefer as an air conditioner and a thermal liner as a thermos. Both keep things cool, but they work differently.
Cost Comparison (40HQ, China → Europe, Typical Rates)
| Item | Reefer Container | Dry Container + Thermal Liner |
|---|---|---|
| Base freight | $3,500 – $5,500 | $1,800 – $2,800 |
| Container surcharge | +$1,500 – $2,500 | $0 |
| Power / plug-in fees | +$200 – $500 | $0 |
| Thermal liner kit | $0 | $350 – $650 |
| Total (typical) | $5,200 – $8,500 | $2,150 – $3,450 |
Savings with a thermal liner: $3,000 – $5,000 per container.
When to Use Each
Use a Reefer When:
-
Your cargo MUST stay at an exact temperature (e.g., 2-8°C for pharmaceuticals)
-
The journey exceeds 35 days through tropical waters
-
The cargo generates its own heat (e.g., fresh produce respiration)
-
You need active temperature control and documentation for regulatory compliance
Use a Thermal Liner When:
-
Your cargo is pre-frozen or pre-chilled before loading
-
The journey is under 30 days
-
You need moderate temperature protection, not precision control
-
You’re shipping mixed loads where some cargo doesn’t need refrigeration
-
Budget is a significant consideration
-
You want to reduce carbon footprint (no power consumption)
The Hybrid Approach
Many experienced shippers use both: a reefer set to a moderate temperature with a thermal liner inside. This reduces the energy load on the reefer unit, provides backup protection if power fails, and can even allow the reefer to run at a higher (cheaper) set point while maintaining cargo temperature through the liner’s insulation.
Real-World Result
A Southeast Asian seafood exporter shipping frozen shrimp to Europe switched from reefers to dry containers with our Foam Composite thermal liners. Results: spoilage dropped from 8% to under 3%, annual savings of approximately $180,000 across their shipping lanes.
Get a Recommendation