Freight Basics
Reefer freight is temperature-controlled shipping moved in refrigerated trailers. It protects products that need to stay frozen, chilled, above freezing, or inside a controlled room-temperature range.
TL;DR
Reefer freight, also called refrigerated freight or temperature-controlled freight, is freight moved in refrigerated trailers designed to keep products within a specific temperature range during transit.
The real job is not just keeping freight cold. It is temperature protection: keeping the product where it needs to be, whether that means frozen, chilled, protected from freezing, or held in a warmer controlled range.
That matters because not every commodity has the same requirement. One shipment may be swinging beef that needs a chilled range. Another may be ice cream that must stay deeply frozen. Another may be pharmaceuticals that cannot drop below a certain threshold. Another may be a product that needs to stay around 80 degrees without going under or over.
The short version: reefer freight is used for any commodity with a defined temperature window, not just frozen or refrigerated goods.
A lot of shippers hear “reefer” and think cold. In practice, reefer freight is about protecting the temperature window the product requires. Sometimes that means freezing. Sometimes that means refrigeration. Sometimes that means protect-from-freeze service. Sometimes it means holding a product in a controlled room-temperature range so it does not get too hot or too cold.
Here is how those windows break down in practice:
The equipment does not change. The setting does. That is what makes reefer freight more nuanced than most shippers expect when they first start moving temperature-sensitive commodities.
Moving reefer freight is not just booking a refrigerated truck. Every step in the process is designed to protect the temperature window from the moment the shipment is planned through final delivery.
Here is how a properly managed reefer move works:
A delayed appointment, a missed pre-cool, or too much dock exposure can turn into rejected product, lost margin, and compliance risk. The logistics plan around the freight matters as much as the equipment itself.
Understanding how reefer freight fits into your broader cold chain logistics operation is what separates a smooth move from a costly one.
There is no single reefer setting that works for every product. The right temperature requirement depends on the commodity, shipper instructions, receiver expectations, and any label or compliance requirements tied to the product.
| Commodity | Typical Temperature Protection Need |
|---|---|
| Swinging beef and fresh meat | Chilled protection, often close to the low 30s F |
| Ice cream and frozen foods | Frozen protection, often 0 degrees F or below |
| Pharmaceuticals, biologics, and medical supplies | A defined range that cannot drift too warm or too cold |
| Produce and fresh vegetables | Consistent cooling and airflow to preserve freshness and shelf life |
| Dairy products | Steady refrigerated conditions to reduce spoilage risk |
| Seafood and shellfish | Strict cold protection for freshness and food safety |
| Floral products and plants | Controlled temperatures to reduce wilting and damage |
| Chocolate and confectionery | Protection from heat exposure and melting |
| CRT or heat-sensitive products | Controlled room temperature, often roughly 59 degrees F to 77 degrees F |
| Protect-from-freeze commodities | Must stay above freezing even in winter conditions |
The common thread: every commodity on this list has a defined temperature window. The broker’s job is to make sure the carrier understands that window and the equipment is set correctly before the truck leaves the dock.
A reefer trailer is an insulated trailer with an active refrigeration unit that keeps freight at a target temperature in transit. Unlike a dry van , a reefer trailer is designed to cool, maintain, and help protect a specific environment so sensitive products stay within their required temperature range over long distances.
A dry van protects freight from weather and road exposure. It does not control temperature. A reefer trailer actively manages the internal environment from the moment it is pre-cooled before loading through the final delivery appointment.
| Feature | Reefer Trailer | Dry Van |
|---|---|---|
| Temperature control | Active refrigeration unit | None |
| Insulation | Heavy insulated walls | Standard walls |
| Pre-cooling | Required before loading | Not applicable |
| Use case | Temperature-sensitive freight | General freight |
| Cost | Higher than dry van | Standard market rate |
The practical takeaway: if your product has a temperature requirement written on the label, spec sheet, or purchase order, it likely needs reefer equipment.
Cowtown Logistics provides refrigerated freight brokerage for shippers that need dependable temperature protection, clear communication, and nationwide refrigerated capacity. Whether the product needs to stay frozen, chilled, protected from freeze, or held in a narrow band, we help match the shipment to carriers that understand temperature-controlled freight.
We work with shippers moving:
The wrong setting, a delayed appointment, or too much dock exposure can turn into rejected product, lost margin, compliance risk, and unhappy customers. We keep the shipment plan tight from pickup through delivery.
The more specific the shipment details are, the easier it is to match the load to the right refrigerated solution. Before requesting a reefer freight quote , gather:
Those details help prevent assumptions. With temperature-sensitive freight, assumptions are where problems usually start.
No. Reefer freight can be frozen, chilled, protected from freezing, or held in a warmer controlled temperature range depending on the product and its required temperature window.
A reefer trailer has an active refrigeration unit and heavy insulation to maintain a target temperature throughout transit. A dry van protects freight from weather and road exposure but does not control temperature.
Common examples include fresh meat, produce, dairy, seafood, frozen foods, and beverages , along with pharmaceuticals, biologics, and medical supplies , flowers, chocolate, and any other commodity with a defined temperature threshold.
Yes. Reefer equipment can be set to protect freight from freezing in winter conditions or on lanes where outside temperatures could damage the product.
Yes. Some commodities require a controlled room-temperature range, meaning the goal is to prevent the product from getting too cold or too hot. That is temperature protection, not just refrigeration.
Reefer freight is not just refrigerated shipping. It is temperature protection for any commodity with a defined window, whether that means frozen, chilled, above freezing, or controlled room temperature. The equipment is only part of the equation. The carrier knowledge, the pre-cool, the appointment coordination, and the communication throughout the move are what protect the product.
If you have a shipment that needs temperature protection, send us the lane, commodity, target temperature or range, weight, and timing details . We will match it to the right refrigerated solution.
Cowtown Logistics is a Fort Worth-based freight brokerage serving shippers across Texas and beyond. We help customers move freight with the right equipment for the job, including reefer trailers , dry van shipping , flatbed shipping , food and beverage shipping , medical equipment and supplies shipping , and temperature-controlled freight when product protection matters.
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