First-call fix rate is the number that matters
A first-call fix means the technician resolved the issue on the initial visit without needing to return for parts. Industry average hovers around 70-75%. Top performers hit 85-90%. Every point of improvement reduces truck rolls, customer frustration, and labor cost.
The connection to van stock is direct. When the right part is on the truck, the tech finishes the job. When it is not, someone drives back to the branch, the customer waits, and the company absorbs the cost of a second trip. At $150-300 per truck roll, the math gets ugly fast.
The top 50 by trade
Every trade has a core set of parts that cover the majority of common repairs. These are not the exotic parts - they are the boring ones that get used every week.
- HVAC: capacitors, contactors, fan motors, filter driers, thermostats, condensate pumps, relays, fuses, refrigerant, copper fittings.
- Electrical: breakers (15/20/30A), GFCI outlets, switches, wire nuts, romex assortment, junction boxes, conduit fittings, ground bars, cable clamps.
- Plumbing: supply lines, shut-off valves, wax rings, fill valves, flappers, P-traps, SharkBite fittings, PEX rings, hose bibs, expansion tanks.
How to build the list
Pull 90 days of work order history. Sort by part number. The top 50 items by frequency of use are your van stock candidates. Cross-reference with first-call fix failures - any part that caused a return trip more than twice in a quarter belongs on the truck.
Weight matters too. A capacitor takes no space. A water heater does not belong on every van. The sweet spot is high-frequency, small-footprint parts that solve the most common failure modes.
The cost of getting it wrong
Understocking means return trips. Overstocking means dead inventory, cluttered vans, and parts that expire or get damaged bouncing around in the back of a truck.
The hidden cost is technician time spent digging through a disorganized van looking for a part they might not even have. A messy truck adds 10-15 minutes per job just in searching and reorganizing. Over a five-job day, that is over an hour of wasted labor.
Organizing the van itself
Bins, labels, and fixed locations. Every part has a home. Every home has a label. When a tech grabs a part, they know where it came from and can flag it for restock.
Shelving systems from companies like Adrian Steel, Ranger Design, or Weather Guard are worth the investment. A $2,000 shelving package pays for itself in a few months of reduced search time and fewer lost parts.
- Group parts by job type, not alphabetically.
- Keep the most-used items at waist height, not on the floor.
- Use clear bins so you can see quantity at a glance.
- Dedicate one section for returns and warranty parts.
Review quarterly, adjust continuously
Van stock is not a set-it-and-forget-it list. Equipment models change, customer bases shift, and seasonal patterns affect which parts move fastest. Pull usage data quarterly and adjust the list.
Give technicians a voice in the review. They know which parts they keep running out of and which ones have been sitting in the same bin for six months. That field intelligence is more valuable than any spreadsheet.