5 signs a customer is leaving your supply house

Customers almost never cancel on a distributor. There’s no contract to end and no account to close. A contractor just starts buying a little less from you and a little more from someone else, and by the time it shows up on a report, the business is gone. That’s why customer churn in wholesale distribution is so hard to see. HARDI’s 2025 research found that 83% of HVAC contractors use three or more suppliers, and the primary supplier gets about 68% of what they buy. Your customers already have a second supplier. The question is how much of their business is moving there. Here are five signs, all of which show up in your own order history before anyone says a word. 1. Longer gaps between orders than their normal Every account has its own rhythm. A contractor who orders every 9 days and hasn’t ordered in 20 is in trouble. A quarterly account at day 80 is fine. The warning sign isn’t a fixed number of days. It’s a gap that’s long for that customer. 2. Smaller orders on the same schedule Some customers keep ordering on time but spend less each time. Example: $4,200, $4,100, $4,300, then $3,100, $2,600 and $2,300. They haven’t left. They’re splitting the order. No gap means no report flags it. 3. A product line drops off A contractor who used to buy wire, fittings and breakers now only buys fittings. The account looks active. One line moved to a competitor, often the one with the best price or the most stock. 4. A price increase or backorder just happened Price changes and stock problems are when contractors are most likely to get a second quote. If an account slows down within a few weeks of a price increase or a backorder on lines they buy often, the two are probably connected. 5. Their rep changed When a rep leaves, retires or gets reassigned, the relationship resets. Accounts that ordered out of habit with the old rep are the easiest for a competitor to pick up. Watch every account touched by a territory change for the next two quarters. Why the 90-day no-order report misses most of this A common churn report in distribution flags any account with no order in 90 days. It catches customers who stopped completely, long after they decided to leave. It misses all five signs above: A 9-day customer is flagged 81 days late. A shrinking customer is never flagged, because they never stop ordering. A dropped product line is invisible, because the account is still active. How to check your own data Export a sales-by-customer report by month for the last 24 months from Prophet 21, Eclipse or QuickBooks. For each of your top 100 accounts, work out their average days between orders and average order size. Flag anyone whose current gap is 1.5 times their normal, or whose last three orders average 30% or more below their usual size. For each flagged account, check what changed: price, stock, rep or season. Call the top five by last year’s spend this week. The 1.5x and 30% cutoffs are starting points, not rules. Adjust them once you see which flags turn out to be real. Frequently asked questions What is customer churn in wholesale distribution? It’s when a customer stops buying from you or moves a meaningful share of their purchases to another supplier. In distribution it’s usually gradual, because contractors buy from several suppliers at once. How do I know if a customer is leaving? Compare each customer to their own history: longer gaps between orders, smaller orders, dropped product lines, or a slowdown right after a price increase, backorder or rep change. Is a 90-day no-order report enough? No. It only catches customers who have stopped entirely, and it treats a weekly buyer and a quarterly buyer the same way. See which customers you lost last year. The free lost customer check at allodialsupply.com/check runs on a sales-by-customer report and shows who stopped buying. A full Prospect Replay shows when each one started to drift and when Allodial Predict would have flagged them. Sources: HARDI 2025 State of the Channel (contractor supplier data).