Guide · HVAC, plumbing and electrical contractors

How to manage truck stock for HVAC, plumbing and electrical contractors

A practical system for keeping service trucks stocked without overbuying: standard truck lists, simple restocking, and knowing what each job really used.

For a trade contractor, every truck is a small warehouse that moves. When it is stocked well, technicians finish jobs on the first visit. When it isn't, they drive to the supply house, the customer waits, and the parts used never quite make it onto the invoice. Here is a system that works whether you run three trucks or thirty.

1. Write a standard truck list

Agree a list of what every service truck carries and how many: fittings, breakers, capacitors, filters, sealants, the parts your team uses every week. Start from what your best technician actually carries, not a catalogue. Give each item a minimum (when to restock) and a maximum (the most the truck should hold). Specialist trucks can have their own list.

2. Restock to the list, on a schedule

Pick a fixed restocking rhythm, such as every Friday or every morning for busy trucks. The technician, or someone at the shop, tops the truck back up to the list. Restocking to a list is faster than guessing, and it shows you, week by week, which parts are really being used.

3. Record what each job used

Parts used on a job should be recorded on that job, while the technician is still on site. That is what gets them billed, and it is what tells you later why a truck ran low. If paperwork comes in at the end of the week, the details are already gone.

4. Count the trucks regularly

Count a few trucks every week rather than all of them once a year. A short count of the high-value items (equipment, controls, copper) catches problems while they are small. Differences between the count and the list are worth a conversation, not a reprimand: usually it is unrecorded job use.

5. Watch for slow movers

Every few months, look at which truck-list items haven't moved. Take them off the trucks and back to the warehouse, where one shared stock serves everyone. Cash tied up in parts that ride around for a year is cash you could use elsewhere.

The checklist

• A standard truck list with a minimum and maximum for each item.
• Restocking to the list on a fixed schedule.
• Parts recorded on the job, on site.
• A few trucks counted every week, high-value items first.
• Slow movers reviewed and pulled back every few months.