Reefer Unit (Refrigeration Unit)
The self-contained diesel-powered refrigeration system mounted on the front wall of a refrigerated trailer that maintains the cargo compartment at a specified temperature. Reefer units can heat or cool the trailer interior, typically maintaining temperatures from -20°F to 70°F. They run independently of the tractor's engine and carry their own fuel supply (usually 50-100 gallons of diesel). Major manufacturers include Carrier Transicold and Thermo King. Reefer units require regular maintenance and are subject to EPA emissions standards.
Real-World Example
A reefer unit is set to maintain 34°F for a load of fresh produce from California to New York. The unit runs continuously for the 4-day transit, burning approximately 60 gallons of diesel, and a temperature recorder documents that the cargo stayed within the 32-36°F range throughout the trip.
Why Reefer Unit (Refrigeration Unit) Matters for Shippers
Choosing the right equipment directly impacts your freight costs, transit time, and cargo safety. Understanding what a Reefer Unit (Refrigeration Unit) is — and when to use one — helps you avoid paying for capacity you do not need, reduces the risk of damage claims, and ensures your shipment meets carrier and regulatory requirements. Shippers who select the correct trailer type on the first try typically save 10-25% compared to those who rebook after a failed pickup.
Common Questions About Reefer Unit (Refrigeration Unit)
What types of freight are best suited for a Reefer Unit (Refrigeration Unit)?
A Reefer Unit (Refrigeration Unit) is designed for specific cargo characteristics — weight, dimensions, temperature sensitivity, or loading requirements. Your freight broker can help you determine whether a Reefer Unit (Refrigeration Unit) is the most cost-effective option for your particular shipment or whether an alternative trailer type would work better.
How does choosing a Reefer Unit (Refrigeration Unit) affect my shipping cost?
Equipment type is one of the biggest cost drivers in freight. A Reefer Unit (Refrigeration Unit) may cost more or less than standard dry van rates depending on availability in your lane, seasonal demand, and any specialized handling requirements. Getting quotes for multiple equipment options is always a good practice.
Can I track my shipment when using a Reefer Unit (Refrigeration Unit)?
Yes. Most carriers that operate Reefer Unit (Refrigeration Unit) equipment provide GPS-based tracking and real-time ETAs. At Direct Fleet Dispatch, we provide shipment visibility on every load regardless of equipment type, so you always know where your freight is.
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