Plumbing inventory is mostly a van problem. Each truck carries fittings, valves, supply lines, wax rings and maybe a spare water heater, and nobody knows what's on it until a plumber is standing in a basement without the part he needs. Plumbing inventory software tracks what each van holds, deducts parts as they go on invoices and tells you what to restock before tomorrow. This page is part of our plumbing software guide and compares six options, with October 2026 prices.
What plumbing shops need from inventory software
Plumbing inventory lives in two places, and most of the trouble happens between them.
The vans. Each truck carries a standard stock: fittings in several sizes and materials, ball valves, supply lines, wax rings, flappers, cartridges, PEX and copper, maybe a disposal and a water heater. The software should know what each van is supposed to hold, what it holds now and what's been used today.
The warehouse or shop. Bulk stock, water heaters, special-order fixtures and returns. Parts move from here to vans, so the software needs transfers, not just usage.
The core workflow:
- Parts used per job. When a plumber adds a part to the invoice, it should come off that van's count. This is also how job costing sees material cost.
- Reorder points. Minimums and maximums for each part on each van and in the warehouse, so restocking is a list, not a guess.
- Restock and purchase orders. Low items on vans get filled from the warehouse; low items in the warehouse become purchase orders to the supply house.
- Receiving and matching. When the order arrives, check it against the PO and the supplier invoice before you pay.
- Counts. Spot counts weekly on fast movers, full van counts quarterly.
Without this, you pay for it in supply-house runs. A plumber who drives 40 minutes round trip for a $12 fitting has cost you far more than the fitting.
How the picks compare
ServiceTitan is the only full field service platform here with documented truck and warehouse locations, reorder points and replenishment purchase orders built in. It makes sense if you're already at a size where ServiceTitan fits for other reasons.
For smaller shops, the choice is usually between adding Ply to the field service tool you already use and switching to a platform with inventory included. Ply is the lighter change: your plumbers keep the app they know, and you gain van stock, reorder points and supplier ordering. Service Fusion Plus and Workiz include inventory in the base platform, which is simpler if you're choosing new software anyway, but confirm per-van tracking in the demo.
Housecall Pro and Jobber both need help here. Neither lists real inventory on its pricing page, and both integrate with Ply.
Whichever way you go, start with a standard van list. Pull six months of invoices, find the 80 to 120 parts your plumbers actually use, and set every van to carry the same list with the same minimums. Software makes that list easier to enforce, but it can't pick the parts for you, and a clean list is half the benefit before you spend anything.
What to look for before you sign
- Set up two vans and a warehouse in the trial and move a part between them.
- Invoice a job and watch the count change on the right van.
- Check reorder points per location, not just one company-wide minimum.
- Ask about purchase orders and receiving against them.
- Confirm serial tracking for water heaters.
- Check the QuickBooks setup, since some tools don't support their own inventory and QuickBooks inventory at the same time.
What it costs
Prices are as of October 2026, billed annually.
| Shop size |
Jobber or Housecall Pro + Ply |
Service Fusion |
ServiceTitan |
| 1 user |
Jobber Core $29/mo or HCP Basic $59/mo, plus Ply (see vendor) |
Starter $208/mo + $50 inventory add-on |
Rarely sold at this size |
| 5 users |
Jobber Grow $229/mo or HCP Essentials $149/mo, plus Ply |
Plus $325/mo |
Third-party est. $1,225 to $2,500/mo |
| 15 users |
Jobber Grow $399/mo or HCP MAX about $544/mo, plus Ply |
Plus $325/mo (unlimited users) |
Third-party est. $3,675 to $7,500/mo |
ServiceTitan figures multiply a third-party range of $245 to $500 per tech per month and exclude implementation; none of it is published by the vendor. Workiz and Ply don't publish prices. At 15 users, Service Fusion's unlimited-user pricing is the cheapest way to get inventory in the core system.
