One of the most fundamental decisions in truckload shipping is also one that many shippers make almost automatically: dry van or refrigerated. For freight that has always moved one way, the choice may never come up as an active decision. But for businesses introducing new product lines, expanding into new markets, or simply trying to understand why their freight costs differ from a competitor’s, understanding the practical differences between dry van and reefer equipment, and when each makes sense, is genuinely useful. The short version is that the choice usually comes down to whether your product’s quality depends on temperature control, but the details matter for cost, scheduling, and documentation.
What Dry Van Freight Covers
A dry van trailer is, in essence, an enclosed box on wheels, fully sealed from the outside environment but without any active climate control. This makes it the workhorse of the trucking industry, used for the vast majority of general freight: packaged consumer goods, retail merchandise, building materials, paper products, non-perishable food items, furniture, and palletized goods of nearly every description. Dry van trailers protect freight from weather, road debris, and theft, and their standardized dimensions make them compatible with the loading docks of the overwhelming majority of warehouses and distribution centers. If your product does not require a specific temperature range to maintain its quality during transit, dry van is almost certainly the right and most cost-effective choice.
What Refrigerated (Reefer) Freight Covers
A refrigerated trailer, commonly called a reefer, is essentially a dry van with an insulated structure and an active refrigeration unit built into the front of the trailer. This unit can maintain temperatures across a wide range, often from around negative 20 degrees Fahrenheit up to around 70 degrees Fahrenheit, depending on the unit and setpoint. Reefers are essential for fresh produce, dairy, meat and poultry, frozen foods, certain pharmaceuticals, floral products, and any other freight where temperature excursions during transit could compromise product safety, shelf life, or regulatory compliance. The refrigeration unit runs continuously during transit, which means reefer trailers also carry their own fuel supply for the unit, separate from the truck’s own fuel.
Cost Differences and Why They Exist
Reefer freight typically costs more per mile than dry van freight, and the reasons are straightforward once you understand the equipment. Reefer trailers themselves are more expensive to purchase and maintain, given the additional refrigeration unit, insulation, and specialized flooring designed to allow airflow underneath the load. The refrigeration unit consumes diesel fuel continuously, adding a real and ongoing operating cost regardless of how far the truck travels. Reefer units also require more frequent maintenance, since a unit failure during transit can result in a total loss of temperature-sensitive freight, which is a far more serious consequence than a mechanical issue with a dry van. These factors combine to make reefer capacity both more expensive and, in many regions, more limited than dry van capacity.
Multi-Temperature and Mixed Loads
Some reefer trailers are equipped with bulkheads that divide the trailer into two or more compartments, each capable of maintaining a different temperature setpoint. This allows a single truck to carry, for example, frozen goods in one section and fresh produce requiring a higher temperature in another, which can be a cost-effective option for shippers who regularly need to move smaller volumes of multiple temperature classes to the same destination. Multi-temperature capability adds complexity and typically commands a premium, but for the right freight profile it can reduce the total number of trucks needed and improve overall transportation efficiency.
Documentation Differences You Should Expect
Beyond the equipment itself, reefer freight typically comes with additional documentation requirements that dry van freight does not. Temperature logs, generated automatically by the reefer unit’s onboard recorder, document the trailer’s internal temperature throughout the transit and are often provided alongside the proof of delivery, particularly for food and pharmaceutical shipments where this documentation may be required for regulatory compliance or quality assurance records. Shippers moving temperature-sensitive freight regularly should confirm with their carrier that temperature logging and reporting is a standard part of the service, not an optional add-on, since reconstructing this data after the fact is often difficult or impossible.
How to Decide Which You Need
For most shippers, the decision is straightforward based on the product itself. If your freight would be damaged, spoiled, or rendered non-compliant by exposure to ambient temperatures during transit, reefer is necessary, full stop. The more nuanced cases tend to involve products on the boundary, such as certain packaged foods, beverages, or cosmetics that are shelf-stable under normal conditions but can be damaged by extreme heat or freezing during transit through certain regions or seasons. For these borderline cases, it is worth discussing with your carrier whether protect-from-freezing or protect-from-heat reefer service, sometimes used at a setpoint closer to ambient temperature simply to prevent extremes, makes sense for your specific lanes and seasons.
How Z Nation Transport Supports Both
We operate both dry van and refrigerated capacity specifically because so many of our shipping partners need both, sometimes for different product lines and sometimes for the same product moving to different markets with different seasonal risk profiles. Our reefer fleet maintains continuous temperature monitoring with documented logs provided as part of every delivery, and our dispatch team understands the operational differences between the two equipment types, including the additional planning that goes into pre-cooling trailers before loading and managing fuel for refrigeration units on longer routes. Whether your freight needs a sealed box or a climate-controlled one, our team can help you figure out the right fit and build a transportation plan around it.
Trailer Availability and Why It Varies by Region
Another practical consideration for shippers choosing between dry van and reefer is regional equipment availability. Dry van trailers are by far the more numerous equipment type on the road, which generally means more carriers and more available capacity for dry van freight in most markets. Reefer trailers are a smaller share of the overall fleet, and reefer capacity tends to concentrate around regions with significant produce, food production, or food distribution activity. Shippers with reefer freight moving through or originating in regions with less reefer density may find capacity tighter and pricing somewhat less flexible than for dry van freight on comparable lanes, which is one more reason that planning ahead and maintaining relationships with carriers who run dedicated reefer capacity, rather than searching for one-off reefer trucks each time, pays off for shippers with recurring temperature-controlled freight needs.