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What Is a Reefer Trailer Types Uses and Freight Guide
A reefer trailer is a refrigerated trailer with its own cooling unit that holds freight at a set temperature from dock to dock. Reefers haul the freight that cannot ride in a dry van, produce, meat, dairy, frozen food, pharmaceuticals, and because that freight never stops moving, reefer is one of the steadiest segments in trucking. This guide covers what a reefer trailer is, the types and costs, the freight it carries, and what running reefer actually demands from a carrier.
What is a reefer trailer
A reefer is a insulated trailer with a diesel-powered refrigeration unit mounted on the nose. The unit holds a setpoint temperature, anywhere from about minus 20 to plus 70 degrees Fahrenheit, regardless of outside weather. Air circulates from the unit along the ceiling and returns under the load, which is why loading pattern and airflow matter as much as the setpoint.
The trailer protects the cargo; the paperwork protects the carrier. Temperature logs from the unit are the evidence that the load stayed in range when a receiver claims otherwise.
Reefer trailer types and sizes
Type | Typical use |
53-foot single-temp | Standard full-truckload produce, meat, frozen |
Multi-temp (compartments) | Grocery distribution, mixed frozen and chilled |
48-foot and shorter | Regional and city delivery |
Small reefer vans and boxes | Final-mile food, pharma, catering |
A new 53-foot reefer runs roughly $75K to $100K plus, and the refrigeration unit has its own maintenance life separate from the trailer chassis, typically needing replacement or major service around year 7 to 8.
What freight reefers haul
Produce, the seasonal backbone of reefer freight
Meat, poultry, and seafood, tight temp tolerances and washout requirements
Dairy and frozen foods
Pharmaceuticals and medical goods, the highest-paying and most demanding
Protect-from-freeze dry freight in winter, beverages, paint, chemicals
That last category is why reefer utilization stays high in winter: a reefer can haul dry freight any day, but a dry van cannot haul reefer freight ever. The reefer load board and winter strategy guide covers how carriers work that advantage.
What reefer pays vs dry van
Reefer spot rates typically run 30 to 60 cents per mile above dry van on comparable lanes. The premium pays for the equipment cost, the fuel the unit burns, roughly half a gallon to a gallon per hour of run time, and the claims exposure that comes with perishable freight.
The margin math only works if you track it. Fuel for the truck and the unit, washouts, and unit maintenance all belong in your cost per mile, and lane selection should follow revenue per mile after those costs, not the headline rate.
The operational demands of running reefer
Pre-cool the trailer to the rate-con temperature before loading, never load a warm box
Record the setpoint and mode, continuous vs cycle, from the rate confirmation exactly
Pulp the product at loading where allowed, the trailer maintains temperature, it does not fix warm product
Keep unit fuel above a quarter tank, a unit shutdown mid-trip is a claim
Washout between incompatible loads and keep the receipts
Detention hits reefer harder than dry van because the unit burns fuel the whole wait. Documenting arrival and departure times, the workflow in the detention time guide, is how reefer carriers get paid for dock delays instead of eating them.
How a TMS handles reefer freight
Reefer adds fields and failure points that generic dispatch tools ignore. A TMS for carriers should carry temperature requirements on the load from rate confirmation to driver.
Datatruck captures equipment type and temperature requirements at load creation, TruckGPT reads them straight off the rate confirmation, and the DT Driver app puts the setpoint and stop instructions in the driver's hand. Temperature-sensitive loads dispatch with the requirement attached instead of living in a text message. See load boards ranked by freight type for where reefer freight books best, and the trucking terms glossary for the rest of the vocabulary.
If you run or are adding reefer, book a free demo and watch a reefer rate confirmation dispatch with the setpoint attached, no text message required.
FAQs
What is a reefer trailer?
A reefer trailer is an insulated trailer with its own refrigeration unit that holds freight at a set temperature, typically between minus 20 and plus 70 degrees Fahrenheit. It hauls produce, meat, dairy, frozen food, and pharmaceuticals that cannot ride in a dry van.
How much does a reefer trailer cost?
A new 53-foot reefer runs roughly $75K to $100K plus, with used units well below that depending on the refrigeration unit's hours. The unit itself has a separate maintenance life from the chassis, usually needing major service around year 7 to 8.
Does reefer pay more than dry van?
Yes, typically 30 to 60 cents per mile more on comparable spot lanes. The premium covers the equipment cost, refrigeration fuel burn of roughly half a gallon to a gallon per hour, and the higher claims exposure of perishable freight.
Can a reefer haul dry freight?
Yes, with the unit off or in protect-from-freeze mode, which is why reefer utilization stays strong in winter. A reefer can take dry van loads any day, while a dry van can never take temperature-controlled freight.