What a Truck APU Actually Costs in 2026

Three conditions, three prices, and 3.6x between them. What a used unit costs against a new one, on our own invoices.

The question comes in almost every week, and it never gets a straight answer online: what does an APU actually cost?

Not a range someone guessed. Not a payment. The number on the invoice.

So we pulled ours. Every auxiliary power unit we sold and installed in 2026, across both shops, through September 7. Twenty-three units.

Three prices, not one

There is no single price because there is no single product. An APU comes in three conditions, and they are separated by more money than most people expect.

• Used — $3,450. Nine of the twenty-three. Every one of them at the same number.
• Remanufactured — $8,450. Eight units, also flat at that price.
• New — $12,495 to $14,150. Six units. The spread here is the only real spread on the list, and it comes from configuration.

From the bottom step to the top is 3.6 times the money. That is the part nobody tells you when they quote you "an APU."

What the buying pattern says

Here is the number that surprised us when we lined it up: seventeen of twenty-three did not buy new.

That is not people cutting corners. Operators who run the math on a unit that sits in a truck they may sell in three years tend to land on the middle step or the bottom one. The new unit makes sense for the operator keeping the truck a long time; it stops making sense fast if the truck turns over.

What separates the three

• The used unit is a working unit with hours on it. It runs, it was checked, and it costs a third of new. What you give up is remaining life and, usually, the longest warranty.
• The remanufactured unit is the middle ground on purpose: rebuilt to spec, with wear parts replaced, at roughly two-thirds the price of new.
• The new unit is the one to buy if the truck is staying with you and you want the longest runway before anyone touches it again.

Why the middle step exists at all

A remanufactured unit is not a used unit with a cleaning. The wear items come out and go back in new, and the unit is brought back to the manufacturer's specification before it ships. That is the whole reason it lands between the two other numbers instead of next to the used one.

It is also the step most operators have never had explained to them. They ask for a price, hear one number, and assume that number is the product. Then they find a cheaper one somewhere and cannot tell whether they are comparing the same thing. Usually they are not.

The mistake that costs the most

The expensive mistake is not buying the wrong step. It is buying the right step for a truck that was never checked first.

An APU mounts to the frame and ties into the electrical system. If the batteries are marginal, if the charging system is soft, if the mounting rail already has issues, the unit gets blamed for problems it did not cause. We would rather look at the truck before you spend three thousand dollars than argue about it after you spend twelve.

What this number does not include

We are giving you the equipment price, and only that.

Installation is separate and it varies by truck: what the mounting looks like, what has to be routed, what condition the electrical is in. We are not publishing a single install number here because our own records do not break it out per unit, and inventing one would be worse than leaving it out.

We are also not promising you a payback period. What an APU saves depends on the price of diesel where you fuel, how many nights you actually sleep in the truck, and how you run. Anyone who quotes you a savings figure without asking those three things is selling, not calculating.

How to price yours honestly

• Decide the condition first, then ask the price. "How much is an APU" has three answers. "How much is a remanufactured unit installed on this truck" has one.
• Count the nights you actually idle. Not the nights you are away — the nights the engine runs while you sleep. That is the only number that drives the math.
• Ask how long you are keeping the truck. This is what moves most operators between the three steps, more than the price itself.
• Get the install quoted against your truck, not in general. Two identical tractors can quote differently based on what is already in the way.

We sell and install these in Houston, Dallas and Monterrey, and the equipment prices above come off our own 2026 invoices, not estimates. If you want the truck looked at before you decide what fits, that is thetrucksavers.com.

Original source: Go Green APU