Inventory management software for plumbing businesses

The best way for a plumbing business to manage inventory is to use a centralized inventory system that tracks parts in the shop, warehouse, and service vans in real time, with clear minimum stock levels and a repeatable process for restocking.

The goal is to prevent three costly problems: technicians arriving at a job without the right fittings, money being tied up in parts that rarely get used, and emergency trips to the plumbing supply house.

1. Build a practical inventory system

For most plumbing businesses, the strongest approach combines a digital inventory list, organized physical storage, and consistent tracking of parts used on jobs.

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Organize parts by category and size

Separate copper fittings, PEX fittings, PVC and ABS fittings, brass fittings, valves, supply lines, drains, repair parts, and consumables. Label each bin with the part name, size, material, and a unique SKU or barcode.

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Track each service van separately

Treat every van as its own mini-warehouse. Assign standard quantities of frequently used fittings to each vehicle and record transfers between the shop and vans.

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Record parts as they move

When parts are received, installed, transferred, returned, or scrapped, update inventory immediately. Barcode scanning or a mobile app makes this much easier than relying on memory or handwritten notes.

2. Set minimum and maximum stock levels

Don't order parts only when someone notices a bin is empty. Establish a minimum quantity that triggers a reorder and a maximum quantity that prevents overbuying.

For example, a shop might set up the following targets. These are illustrative starting points, not universal plumbing stock recommendations.

Adjust these quantities based on actual usage, supplier lead times, storage space, and the jobs you perform.

A simple reorder formula is:

Reorder point = average daily usage × supplier lead time + safety stock

If you use six fittings per day, delivery takes three days, and you want to keep 10 extra fittings as a buffer, your reorder point is 28 fittings.

The principle of setting reorder thresholds, tracking usage, and automating low-stock alerts is also recommended in Ferguson's inventory management guide for contractors.www.ferguson.com+2

3. Choose the right inventory software

If you are currently using spreadsheets or paper lists, you may not need an expensive enterprise system. Choose software based on the number of vehicles, stock locations, and how closely you need to connect materials to jobs and invoices.

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Sortly

(Simple setup)

Good for a smaller plumbing company that wants visual inventory lists, photos, labels, and straightforward stock tracking without adopting a full field-service platform.

Website:sortly.com

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Ply

(Trade-focused)

Worth evaluating if your main challenge is tracking parts across service vans, warehouses, and jobs. It is designed around contractor inventory workflows.www.ferguson.com+3

Website:getply.com

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Simpro

A stronger candidate for a growing operation that needs inventory management alongside purchasing, scheduling, work orders, and job costing.

Website:simprogroup.com

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inFlow Inventory

Worth considering if warehouse stock control, purchasing, purchase orders, and multiple inventory locations are more important than having plumbing-specific job management built in.

Website:inflowinventory.com

My recommendation: prioritize a system that lets technicians record parts against each job from their phones, tracks each van separately, and makes restocking easy. Before committing, confirm the current plan includes the specific features and integrations you need.

4. Establish a daily and weekly routine

Software alone will not fix inventory if nobody is responsible for keeping it accurate.

Every day

• Technicians record parts used on each job.
• Returns and unused materials go back into inventory.
• Vans are replenished to their target levels.

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Every week

• Count high-use and high-value parts.
• Review low-stock alerts and place orders.
• Check discrepancies between recorded and actual stock.

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Every month

• Identify slow-moving and obsolete inventory.
• Compare supplier pricing on frequently purchased items.
• Review parts costs against completed jobs and revenue.

Assign one person to own purchasing, receiving, stock adjustments, and inventory accuracy. Technicians can update usage, but someone should be accountable for the overall system.www.simprogroup.com+1

5. Measure whether the system is working

Track a few simple numbers each month:

• Stockout frequency: How often a technician lacks a needed part.
• Emergency supply runs: How many trips are made because the van or shop was unprepared.
• Inventory accuracy: How closely recorded quantities match physical counts.
• Parts cost per job: Whether materials are being properly accounted for and billed.
• Dead stock: How much money is tied up in unused or obsolete parts.

These measures help you determine whether you need more stock, better processes, or simply better visibility into the inventory you already own.

My suggested starting point

If I were setting up inventory for a plumbing company from scratch, I would start with the 50–100 most frequently used parts, standardize van stock, label every bin, and track parts usage against work orders. Once that process is working reliably, I would expand the catalog and automate reordering.

To recommend the best setup for your business, how many service trucks or vans do you currently have?

Managing inventory for a plumbing business is uniquely challenging because you are dealing with a high volume of small, inexpensive parts (fittings, washers, connectors) alongside expensive, high-ticket items (water heaters, fixtures) split across a warehouse, multiple service vans, and active job sites.

The most effective, modern way to manage plumbing inventory is a hybrid digital-physical system designed around accountability and real-time tracking. Here is the best blueprint for a plumbing business:

1. Adopt Field-Service Software with Inventory Modules

Stop using paper logs, memory, or basic spreadsheets. Implement field service management (FSM) software that tracks inventory down to the truck level.

• Popular Options: Look into platforms like ServiceTitan, Housecall Pro , or Jobber which sync parts used on a job directly with invoicing and stock counts.
• Why it matters: When a technician bills a fitting on-site, it automatically deducts from that specific van’s inventory, alerting you when stock is getting low.

2. Implement the "Min/Max" Stock System

Avoid tying up too much cash in excess inventory or running out of critical parts mid-job by setting explicit thresholds for every item:

• Minimum (Min): The trigger point. When a part hits this count, it must be reordered.
• Maximum (Max): The cap. Never order more than this number to prevent clutter, obsolescence, and dead cash flow.
• Par Levels for Vans: Standardize what every truck carries. A van should only carry what is needed for 80% of routine daily calls, not a mobile warehouse of specialized fittings.

3. Establish the "Van Stock" Accountability Loop

Technicians are notoriously bad at paperwork and inventory tracking unless the system makes it effortless.

• Restocking Routine: Designate specific times for truck restocking (e.g., Friday afternoon or Monday morning) rather than letting techs run to the supply house three times a day.
• Barcode Scanning: Use mobile barcode scanners (often built into FSM apps using a smartphone camera) so techs can scan parts as they pull them or restock, reducing human error.
• Cycle Counting: Instead of a painful, error-prone annual warehouse count, use cycle counting —counting 10–20 specific parts every week on a rotating schedule.

4. Categorize by ABC Analysis

Not all plumbing parts hold the same value or turnover rate. Divide your inventory into three tiers:

• A-Items (High Value/Low Volume): Tankless water heaters, high-end faucets, specialized valves. Control: Tight security, strict sign-out procedures, order just-in-time for specific jobs.
• B-Items (Moderate Value/Moderate Volume): Standard copper fittings, PVC joints, toilet repair kits. Control: Regular monitoring, automated min/max reordering.
• C-Items (Low Value/High Volume): Teflon tape, screws, standard washers, wire nuts. Control: Bulk stock bins in the shop/vans; don't waste time tracking individual counts—rely on visual "bin empty" reorder triggers or Kanban cards.

5. Leverage Vendor Integration

Connect your inventory software directly with your local supply houses (like Ferguson, Winsupply, etc.). Many modern FSM tools allow direct electronic data interchange (EDI) or catalog syncing, meaning purchase orders can be generated automatically the moment a part hits its minimum threshold.

If you'd like, let me know:

• How many service trucks you currently have on the road
• Whether you operate mostly out of a central warehouse or direct-to-van
• What software (if any) you are currently using to run invoices or dispatch

I can help you narrow down the best software or workflow adjustments for your specific company size.

For a plumbing business, I’d recommend an inventory management system that tracks individual parts and fittings, truck stock, warehouse inventory, supplier pricing, and purchase orders—not just a general inventory spreadsheet.

The biggest thing to look for is the ability to track plumbing items by manufacturer part number, UPC, size, material, and fitting type. For example, you want to distinguish a ½-inch copper elbow from a ¾-inch copper elbow, or a PVC coupling from a DWV coupling, without accidentally ordering the wrong part.

Here are the systems I’d shortlist for a plumbing contractor, depending on the size of your business and how you manage inventory.

My top 3 recommendations

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1. ServiceTitan

(Best for a growing plumbing business)

ServiceTitan is my first choice if you need inventory control connected to service calls, technicians, purchasing, and job costing.

• Track parts in trucks and warehouses.
• Create purchase orders and receive shipments.
• Transfer stock between trucks and locations.
• Set replenishment levels and track parts used on jobs.

Best for: Established plumbing contractors with multiple technicians or vehicles.www.servicetitan.com+1

Official plumbing inventory page

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2. Sortly

(Best for simplicity)

Sortly is worth considering if your main goal is knowing exactly what parts and fittings you have and where they're stored, without adopting a full plumbing business management system.

• Catalog fittings by size, material, SKU, and other custom fields.
• Scan barcodes or QR codes using a phone.
• Organize inventory by warehouse, shelf, bin, or truck.
• Add photos to help employees identify similar-looking parts.

Best for: Small shops, parts rooms, and businesses moving away from spreadsheets. Confirm that its purchasing and replenishment workflows meet your needs.www.sortly.com+1

Official website

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3. Housecall Pro

A good candidate if you also want scheduling, dispatching, estimates, invoicing, and customer management alongside your plumbing operations.

Housecall Pro offers a plumbing-specific package. I would evaluate its current inventory capabilities carefully before choosing it primarily for detailed fittings control.help.housecallpro.com

Best for: Residential plumbing businesses wanting an all-in-one service platform.

Official plumbing package

What I would require for plumbing parts inventory

Whichever system you choose, make sure it can handle these specific requirements:

My recommendation: Start with ServiceTitan if you need to connect inventory with jobs, trucks, and purchasing. Choose Sortly if you mainly need a straightforward, barcode-friendly parts catalog and stockroom system.

Let me narrow it down for your business

The best choice depends on how you currently store and issue your parts. Tell me a little about your setup:

1. How big is your plumbing operation?

One truck / owner-operator

2–5 trucks

6–15 trucks

16+ trucks

Warehouse or plumbing supply operation

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2. Where do you need to track inventory?

Warehouse / parts room only

Warehouse and individual trucks

Multiple warehouses and trucks

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3. What is your biggest priority?

Tracking thousands of individual parts and fittings

Barcode scanning and bin locations

Automatic reordering and supplier purchasing

Tracking parts used on jobs and by technicians

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4. What accounting software do you use?

QuickBooks

Sage

Excel / spreadsheets

Something else / none

[Find the best fit]

With those details, I can narrow this to the best one or two systems for your actual parts and fittings operation, rather than recommending software with features you don't need.