Refrigerated cargo is unforgiving. A dry container can survive a delay, a rough handling, or a minor oversight with no real consequence. A reefer container often cannot. When something goes wrong with a refrigerated shipment, the result is frequently a partial or total loss of the cargo, along with the financial and contractual fallout that follows.

The good news is that reefer failures are not random. They cluster around a handful of well-known problems, and every one of them can be prevented. Here are the seven that cause the most damage.

1. Temperature excursions
A temperature excursion is any deviation outside the range the cargo can tolerate. It is the single most common and most destructive reefer problem. The causes vary, an incorrect setpoint, an equipment fault, a power loss, or poor loading that blocks airflow, but the outcome is the same: product quality is compromised, sometimes irreversibly. For sensitive goods, even a brief excursion can render an entire load unsellable.

2. Containers left unplugged during transshipment
This is the vulnerability that surprises first-time shippers. A reefer needs constant power, but during transshipment, when a container moves from one vessel to another or waits in a terminal, it may be temporarily disconnected. If it stays unplugged too long, the internal temperature drifts. Because this happens out of sight, in a port far from either origin or destination, it often goes unnoticed until the damage is already done.

3. Missing or inconsistent temperature records
A reefer container logs its temperature throughout the journey. Those records are more than paperwork. They are proof. If cargo arrives compromised, the temperature record shows where and when the failure happened, which matters enormously for insurance claims and contractual disputes. When those records are missing, incomplete, or inconsistent, the shipper is left exposed, unable to prove what went wrong or who was responsible.

4. Documentation errors that trigger customs holds
Reefer cargo is time-sensitive by nature, which makes it especially vulnerable to customs delays. A single inconsistency across the commercial invoice, packing list, bill of lading, or sanitary certificate can trigger a hold. For dry cargo, a hold is an inconvenience. For refrigerated cargo sitting in a yard, every hour of delay is a threat to the product itself, plus mounting storage and demurrage costs.

5. Rollovers and route changes with no active monitoring
Ships get full. Schedules change. A booked container can be “rolled” to a later sailing, or rerouted through a different port. These events are a normal part of international shipping. The problem is not the rollover itself; it is a rollover that no one is watching. Without active monitoring, a shipper may not learn about a route change until the cargo is already late, at which point the options for protecting it have narrowed.

6. Delays at destination and demurrage
Arriving at the destination port is not the end of the journey. The cargo still has to clear customs, pass any sanitary inspections, and be released. Delays at this stage are common, and for reefer cargo they carry a double cost: the risk to product quality and the financial penalty of demurrage, the charge that accrues when a container sits beyond its allotted free time. A poorly managed destination process can erase the margin on an otherwise successful shipment.

7. No clear point of contact when something goes wrong
This is the problem behind many of the others. When a temperature alarm triggers, a container is rolled, or a document is questioned, the shipper needs a fast answer from someone who knows the operation. If there is no single, accountable point of contact, precious hours are lost figuring out who to call while the cargo sits at risk. In reefer logistics, response time is not a convenience. It is a safeguard.

The pattern behind the problems

Look closely and a pattern emerges. Almost every one of these failures traces back to a lack of visibility and a lack of accountability. Temperature excursions and unplugged containers happen when no one is actively watching. Documentation holds happen when no specialist checked the paperwork. Rollovers cause damage when no one is monitoring the booking. And all of them get worse when there is no clear point of contact to respond.

In other words, the equipment is rarely the real problem. The management is. Reefer cargo does not just need a refrigerated box; it needs an operation built around visibility, preparation, and fast response.

That is exactly why the choice of logistics partner matters more in reefer than in almost any other kind of freight. The partner is what stands between a normal shipping event and a total loss.

Most reefer failures come down to one decision: who you chose to move your cargo. See the questions that separate a specialist from a generalist.