Reefer container shipping moves temperature-sensitive cargo in a refrigerated container that holds a programmed set point across the whole journey. From the USA it comes in three standard sizes, the 20ft, 40ft, and 40ft high-cube reefer, plus controlled atmosphere and deep-freeze options. Set points are commodity-specific, from around minus 18 degrees Celsius for frozen meat to 0 to 4 degrees for many fruits. Cost is driven by the refrigeration premium, fuel, pre-trip inspection, monitoring, the trade lane, and season rather than a fixed list, and the cold chain holds only when the container stays powered and at set point from origin to destination.
Reefer container shipping is one of the most demanding parts of international logistics. The cargo is often high value, the tolerance for error is small, and a single lapse in temperature control can turn a full container of frozen beef or fresh fruit into a total loss. For US exporters, getting reefer shipping right is what protects both the product and the customer relationship on the other side of the ocean.
This guide brings together what exporters ask about most: the container types to choose from, the temperature each commodity needs, what actually shapes the cost, and how the cold chain is held together from the loading dock to the destination cold store. The goal is a working understanding you can use whether you ship one reefer a month or several hundred a year.
What Reefer Container Shipping Is
A reefer is an insulated shipping container with an integrated refrigeration unit built into one end. It draws power from the vessel while at sea, from a reefer point at the terminal, and from a generator set during inland moves, and it maintains a programmed set point by circulating cooled air through the cargo. Unlike a dry container, which simply encloses the goods, a reefer is an active climate system that has to run continuously for the length of the journey.
That continuous operation is the whole point and the whole risk. A reefer holds temperature only while it has power and a working unit, so reefer shipping is really the discipline of keeping the container powered, monitored, and at set point through every handoff. The equipment matters, but the process around it matters just as much.
Reefer Container Types and Sizes
Most US reefer exports move in one of three standard sizes, with two specialized options for particular cargo. Choosing the right unit is the first operational decision on any shipment, and it is closely tied to matching the cargo to the correct reefer container specifications before loading.
| Reefer Type | Approx. Internal Volume | Best For |
|---|---|---|
| 20ft reefer | ~28 cubic meters | Dense or heavy chilled and frozen cargo in smaller volumes |
| 40ft reefer | ~59 cubic meters | The standard unit for most reefer cargo |
| 40ft high-cube reefer | ~67 cubic meters | High-volume chilled and frozen food, the most common choice for US food exports |
| Controlled atmosphere | Varies | Fresh produce needing extended shelf life on long voyages |
| Deep-freeze / super-freezer | Varies | Cargo that must stay well below standard frozen temperatures |
The 40ft high-cube reefer is the workhorse of US food exports because it offers the most usable volume for the rate. The specialized units are chosen only when the cargo requires them, since they carry added cost and are less widely available.
Temperature Ranges by Commodity
There is no single reefer temperature. The correct set point is specific to the commodity, and getting it right is the foundation of the shipment. The table below shows typical ranges for common US reefer exports.
| Commodity | Typical Set Point | State |
|---|---|---|
| Ice cream and deep-frozen goods | -25°C or colder | Frozen |
| Frozen meat, poultry, and seafood | -18°C or colder | Frozen |
| Chilled meat and dairy | 0°C to 2°C | Chilled |
| Apples, grapes, citrus, berries | 0°C to 4°C | Chilled |
| Bananas | ~13°C | Cool |
Meat, poultry, and food-grade commodities make up a large share of US reefer volume, and each has its own tight window. A container running even a few degrees off set point across a multi-week voyage can spoil the load or trigger a rejection at destination, which is why the set point is confirmed against the commodity rather than assumed.
What Drives Reefer Shipping Costs
Reefer shipping is not sold from a fixed price list. A rate is quoted per container for a specific service and is valid for a limited window, because the market underneath it moves constantly. Understanding the components helps you read a quote and judge whether it is fair.
The refrigeration premium
A reefer costs more to move than a dry container because it consumes power, requires monitoring, and depends on less abundant equipment. This premium sits on top of the base ocean rate and is the single biggest reason reefer shipping prices differently from standard freight.
Fuel, season, and equipment
Bunker fuel is passed through as a bunker adjustment factor that rises and falls with fuel prices. Peak seasons ahead of major import periods tighten reefer space and lift rates, and a shortage of the right reefer type at a specific origin port pushes cost up and can delay booking. Reefer equipment is structurally tighter than dry, so lane and timing matter more.
Handling and the inland legs
Pre-trip inspection, pre-cooling, plug-in and monitoring at the terminals, and the temperature-controlled inland move all form part of the true cost of keeping cargo cold. A provider that coordinates the inland reefer truckload shipping leg alongside the ocean booking removes gaps that otherwise appear as demurrage, detention, or a broken chain.
Shipping Reefer Cargo from the USA?
Integrated Global Logistics is an FMC licensed NVOCC with a private reefer program, USMEF and USAPEEC certification, and 99.5% on-time performance across meat, poultry, and food-grade cargo. Tell us your commodity, set point, and destination and our team will respond within one business day.
Talk to a Cold Chain SpecialistTransit and Keeping the Cold Chain Intact
The cold chain is a sequence of steps, and it is only as strong as its weakest handoff. A reefer shipment succeeds or fails on how well each stage below is controlled.
Pre-cooling and pre-trip inspection
Before loading, the reefer unit is inspected to confirm it runs correctly, and the container is pre-cooled to the target set point. A reefer is built to hold a temperature, not to pull down a warm load quickly, so cargo should enter the container already at temperature. Skipping either step is one of the most common causes of a failed shipment.
Loading and airflow
A reefer maintains temperature by circulating air, not by chilling the cargo directly. Correct loading that preserves airflow around and through the pallets is essential, because blocked airflow leaves part of the load warmer than the set point even when the unit reads correctly.
Power, monitoring, and destination
Through the ocean leg and at each port, the container must stay powered and be plugged in promptly, with temperature monitored continuously so a deviation can be caught and acted on rather than discovered on arrival. This continuity carries all the way to destination, which is why exporters shipping cold chain logistics to Southeast Asia and other long lanes plan the destination handling before the cargo ever sails.
Common Reefer Problems and How to Prevent Them
Most reefer failures trace back to a handful of avoidable causes. Knowing them is the fastest way to protect a shipment.
Choosing a Reefer Shipping Partner
Because a reefer shipment depends on so many linked steps, the partner who moves it matters as much as the equipment. The strongest reefer partners control the whole chain rather than handing it between disconnected vendors, and they bring the licensing, certifications, equipment access, and documentation discipline that perishable cargo demands.
Look for an FMC licensed NVOCC with genuine reefer volume, direct carrier contracts, private reefer equipment, in-house customs and documentation, real-time monitoring, and control of the inland legs at both ends. The difference shows up not on smooth shipments but on the ones where something goes wrong, when a defined response protocol and a single accountable contact are what save the cargo.
Integrated Global Logistics LLC is an FMC licensed NVOCC and international freight forwarder with more than 10 years of experience, thousands of TEUs managed annually, and 99.5% on-time performance. IGL is recognized for handling temperature-controlled meat, poultry, and food-grade cargo through a private reefer program, in-house documentation, real-time visibility, and one operations representative from start to finish. Its refrigerated cargo services cover reefer FCL, pre-trip inspection and pre-cooling, monitoring, and inland transport across 50+ countries.
Frequently Asked Questions
What is reefer container shipping?
Reefer container shipping is the transport of temperature-sensitive cargo in a refrigerated container, known as a reefer, that holds a programmed set point throughout the journey. The container has an integrated refrigeration unit that draws power from the vessel, the terminal, or a generator, and circulates cooled air to keep frozen or chilled goods within a required temperature band from origin to destination.
What are the standard reefer container sizes?
The standard reefer container sizes are the 20ft reefer, the 40ft reefer, and the 40ft high-cube reefer, with the 40ft high-cube being the most common for US food exports because it offers the most usable volume. Specialized options include controlled atmosphere units for fresh produce and deep-freeze units for cargo that must stay well below zero. The right size depends on the volume, weight, and density of the cargo.
What temperature can a reefer container hold?
A standard reefer container can typically hold a programmed set point across a wide range from roughly minus 30 to plus 30 degrees Celsius, with deep-freeze units reaching lower. The correct set point is commodity-specific: frozen meat and seafood usually ship at minus 18 degrees Celsius or colder, chilled meat and dairy near 0 to 2 degrees, many fresh fruits at 0 to 4 degrees, and bananas warmer at around 13 degrees.
What determines the cost of reefer container shipping?
Reefer shipping cost is shaped by the base ocean rate plus a refrigeration premium over a dry container, the bunker adjustment factor for fuel, pre-trip inspection and pre-cooling, monitoring and plug-in at ports, equipment availability at origin, the trade lane and destination, seasonality, and whether the cargo moves on a contract or spot booking. Because these move constantly, reefer quotes are valid for limited windows and confirmed close to booking.
What is controlled atmosphere in reefer shipping?
Controlled atmosphere is a technology that adjusts the levels of oxygen and carbon dioxide inside a reefer container to slow the ripening and respiration of fresh produce. Combined with the correct temperature, it extends shelf life across long voyages, which makes it valuable for commodities such as apples, pears, and avocados. Not every commodity needs it, so the decision depends on the fruit and the length of the journey.
What is a pre-trip inspection in reefer shipping?
A pre-trip inspection, or PTI, is a check of the reefer unit before cargo is loaded to confirm the refrigeration machinery, controls, and airflow are working correctly. A passed PTI reduces the risk of a temperature failure at sea, when a fault is far harder to fix. Reputable reefer operators treat the PTI, along with pre-cooling the container to the target set point before loading, as a standard step rather than an optional one.
How is the cold chain kept intact from door to door?
The cold chain is kept intact by pre-cooling the container, loading cargo that is already at temperature, preserving airflow around the load, maintaining power and set point through inland transport and the ocean leg, plugging the reefer in promptly at each port, and monitoring temperature continuously. A break at any handoff can compromise the shipment, so coordinated control of the inland reefer legs and the ocean leg together is what protects the cargo.
What products are shipped in reefer containers from the USA?
US reefer exports include frozen and chilled meat and poultry, seafood, dairy, fresh produce such as apples, grapes, citrus, and berries, and other food-grade and temperature-sensitive commodities. Meat, poultry, and food-grade cargo make up a large share of the volume, and each commodity has its own required set point and handling, which is why matching the equipment and process to the product matters on every shipment.
IGL Freight Intelligence
IGL's Freight Intelligence content is produced by IGL's operations and ocean freight teams specializing in reefer container shipping, cold chain logistics, FCL ocean freight, and inland trucking across 50+ countries. (732) 250-9000 | info@integratedgl.com