Van stock
What is van stock: van stock and truck stock explained
Van stock is the set of parts, consumables and materials an engineer carries in the service vehicle. It is the only inventory present at the moment a job is being worked, so it decides, more than any warehouse figure, whether the visit closes or turns into a second appointment.
For field service
Know what the job needs before the van rolls
Venta Capture, a product of VentaVid, lets the customer show you the fault first, so the engineer arrives with the right part or does not need to arrive at all.
The same thing is called truck stock in North America, trunk stock in some equipment and medical device businesses, and boot stock or bin stock in the UK. All four mean inventory that moves with the engineer.
What does van stock mean for the job?
Central stock answers "do we own this part?" Van stock answers "is it here, now, in the hands of the person standing at the fault?" Only the second question closes a job.
That is why van stock is the operational end of parts availability. Availability is the organisation's capability. Van stock is the slice of it that travelled to the site. When the two diverge, the field pays for it in repeat visits and the customer pays for it in downtime.
How is van stock decided?
A van list is a compromise between four constraints, and every operation resolves it differently:
- Consumption history. What this engineer, on this equipment base, actually fitted over the last six to twelve months.
- Criticality over cost. A low value part that halts a job earns its space ahead of a high value part that fails once a year.
- Cube, weight and legality. Payload limits, racking, gas and chemical rules, and what can safely be stored in a vehicle overnight.
- The replenishment model. A van backed by overnight courier drops or a forward stocking location can carry far less than one restocked weekly from a depot two hours away.
Replenishment is usually the lever with the most room in it. Boot-to-boot transfers between engineers, next-morning delivery to site rather than to the depot, and consumption-triggered top-ups all raise effective availability without adding a single line to the van list.
Van stock explained: a worked example
A refrigeration team carries 180 lines per van. Twelve months of usage shows 42 lines were never fitted by anyone, while four fast movers ran out mid-week often enough to cause a second trip. Dropping the 42 and doubling the four freed space, cut carried value, and lifted the first visit close rate. Nothing was bought that had not been bought before.
What van stock costs you
Carried inventory is not free, and van stock is the most expensive place to hold it:
- Working capital spread thin across dozens of vehicles, none of it visible in the way warehouse stock is.
- Shrinkage and obsolescence. Parts fitted without being booked out, parts for equipment no longer in the installed base, parts that quietly expire.
- Counting cost. A van is the hardest location to audit, because it is never in one place.
- Informal stock. Engineers who have been burned by stockouts build private caches. This is rational behaviour and it destroys your data.
Carrying too little is expensive in the other direction, and the bill lands on the customer's side of the table. Siemens' The True Cost of Downtime 2024 puts unplanned downtime at roughly 1.4 trillion dollars a year across the 500 largest companies globally, around 11 percent of their total revenues, with an idle automotive production line costing up to 2.3 million dollars an hour. Against numbers like that, waiting three days for a part is not a stock decision, it is a service failure with a price tag on it.
How van stock differs from the terms around it
- Parts availability is the measure. Van stock is one of the places you can improve it.
- Consignment stock is owned by the supplier until fitted. It can sit on a van, which is why the two get muddled in reporting.
- A forward stocking location is a small local store near a cluster of sites, used to keep vans light without lengthening lead times.
- Stock accuracy is whether the record matches the vehicle. Most van stock problems that look like availability problems are accuracy problems.
How to load a van against the actual job
Every van list is a bet placed before the fault is known. Narrow the uncertainty and the bet gets smaller. Confirming the model, the serial and the failure mode before dispatch turns a general stocking guess into a specific pick, which is the mechanism behind most improvements in first-time fix rate and most reductions in truck rolls. Structured remote diagnostics does the same job from the office. The stock list is only ever as good as the information it was built against.
