How Much Does It Cost to Run a Reefer Trailer?

Our used reefer trailer buying guide answers this in one quick line for a daily estimate. This article goes deeper. It breaks the real cost to run a reefer trailer into separate pieces. That way, you can budget for the whole picture, not just the sticker price.

Fuel Is the Biggest Line Item

Fuel is the biggest cost you will pay again and again on a reefer trailer. It also comes on top of whatever the tractor itself burns to pull the load. A transport refrigeration unit, or TRU, sits on the trailer’s nose. It runs its own separate diesel engine. That engine keeps running even when the truck is parked. This is why reefer freight can hold a set temperature around the clock.

Real-world fuel costs for a full-time reefer trailer typically run $12,000 to $25,000 a year. That figure comes from O Trucking’s reefer trailer cost breakdown (opens in a new tab). Route, season, and setpoint all move that number. A trailer holding a deep-frozen setpoint through a hot summer burns more fuel than one holding produce at a milder temperature in cooler weather.

TRU Maintenance and the Replacement Reserve You Shouldn’t Skip

TRU maintenance is a separate budget line from the trailer’s own upkeep. It is easy to underestimate. Routine service costs $3,000 to $6,000 a year for a well kept unit, per O Trucking’s figures. That covers filter changes, refrigerant checks, and belt replacement.

Most experienced operators also set aside a replacement reserve. Think of it as a savings fund for the TRU’s next big repair. It is separate from routine service. Most refrigeration units run 15,000 to 20,000 hours before they need major work. That is roughly five to seven years of full-time use. Budgeting $2,500 to $4,000 a year toward that reserve is a common target.

When the bill actually comes due, the cost depends on the option you choose. A major overhaul or rebuild typically costs $5,000 to $12,000. A remanufactured unit runs $15,000 to $22,000. A brand new TRU costs $20,000 to $30,000. All three figures come from O Trucking’s breakdown. Skipping the reserve does not make that bill disappear. It just means the bill lands all at once instead of in planned pieces.

Catching TRU problems early keeps that bill smaller. PayDirt HQ’s reefer trailer inspection guide walks through six systems worth checking, including the TRU itself, before you buy or during routine service.

Insurance Costs More on a Reefer Than on a Dry Van

A reefer trailer usually costs more to insure than a dry van pulling the same freight. The gap comes down to what is inside the box. A full insurance package for reefer freight often runs $10,000 to $25,000 a year, depending on driving experience and claims history. That range comes from MyFullCoverage’s refrigerated truck insurance breakdown (opens in a new tab).

Three things drive that higher price. Reefer freight carries higher cargo value than most dry van freight. The refrigeration unit is another part that can break down. And a reefer policy has to account for temperature monitoring, which a dry van policy does not need.

Cargo value alone can move the number quickly. Many reefer loads need a higher coverage limit, since a truckload of produce or pharmaceuticals can be worth a lot of money. Raising that limit from $100,000 to $250,000 typically adds $800 to $1,500 a year on its own.

Total Cost to Run a Reefer Trailer Each Year

Start by adding up fuel, TRU maintenance, and the replacement reserve. Then add routine trailer upkeep on top, things like tires, brakes, lights, and the usual DOT items every trailer needs. A full-time reefer trailer then typically costs $19,500 to $39,000 a year to run. That figure does not include the trailer payment or the insurance premium itself. Both of those are covered separately above.

Editorial estimates. See the disclaimer at the bottom of this guide.

Looked at per mile instead of per year, the picture shifts a little. Reefer-specific costs, including a financed trailer payment, add roughly $0.23 to $0.43 to every mile. That is compared with a dry van, per O Trucking’s cost analysis. For context, the average class 8 truck cost $2.34 a mile to operate in 2026. That figure covers fuel, maintenance, insurance, and driver pay combined, per the American Transportation Research Institute’s operational cost report (opens in a new tab). A reefer trailer’s extra equipment adds to that baseline. It does not replace it.

A total cost of ownership calculator can help you plan for all of this. Our buying guide’s budget step links to one. It lets you compare a cheaper older trailer against a pricier newer one on the same basis, instead of just sticker price.

Ways to Keep These Costs Down

None of these numbers are fixed. A well run reefer trailer can land at the low end of every range above.

• Service the TRU on schedule, not just when it breaks. Putting off maintenance is the fastest way to turn a small repair into an expensive one.
• Match the setpoint to the actual cargo. Running colder than the load needs burns extra fuel for no real benefit.
• Check door seals and gaskets often. A worn gasket lets cold air escape every time the door opens. That forces the TRU to work harder and burn more fuel.
• Track TRU hours like you track mileage. Hours tell you how close a unit is to needing major work. That way, the replacement reserve bill never comes as a surprise.