The customers you lost last year are your easiest new sales.

Most distributors put far more effort into finding new customers than into calling the ones who stopped buying. That's usually backwards. A lost customer already has an account, already knows your counter staff, and already trusted you once. Winning them back is often the cheapest new business you can find.

This guide covers how to find your lost customers, decide which ones are worth calling, figure out why they left, and make a win back call that works.

Why lost customers are easier to win back than you think

In distribution, customers rarely leave for good. They shift where they buy first. HARDI's 2025 research found 83% of HVAC contractors use three or more suppliers, and the primary supplier gets about 68% of their purchases.

That means a contractor who stopped ordering from you almost certainly still buys the same products, just from someone else. You don't need to convince them they need what you sell. You need to give them a reason to call you again.

Step 1: Find your lost customers

Start with a clear definition, so everyone counts the same way.

• Fully lost: bought from you in the prior 12 months and nothing in the last 6.
• Fading: still buying, but spend in the last 6 months is down by half or more compared with the same months a year earlier.

Fading customers are often the better opportunity. They haven't decided yet.

Avoid using a single cutoff like "no order in 90 days" for everyone. A contractor who ordered every week and has gone quiet for a month is a bigger warning than a quarterly buyer at day 80.

Step 2: Rank them by what they're worth

You won't call everyone, so rank the list. For each account, note:

1. Last year's spend. The bigger the account was, the more it's worth calling.
2. How recently they stopped. A customer who left two months ago is easier to win back than one who left two years ago.
3. How long they were a customer. Long relationships are easier to restart.
4. Margin. A smaller account with good margin can be worth more than a big one you were barely making money on.

Put the top 20 in front of your reps first.

Step 3: Figure out why they left

Before anyone picks up the phone, check your own records for what changed around the time the account slowed down. Common causes show up in data you already have:

• A price increase on lines they bought often.
• A backorder or stock problem on something they needed.
• A rep change, retirement or territory move.
• A billing or credit issue, like a disputed invoice or a credit hold.
• A new competitor opening nearby.

If you can't find anything, that's useful too. It may mean the customer's business changed, not their supplier.

Step 4: Make the win back call

The goal of the first call is to learn, not to sell. A good win back call has three parts.

Admit you noticed

"We noticed you haven't ordered from us since June, and I wanted to check in." Customers respect that you paid attention. Most expected nobody would notice.

Ask what happened

"Was there something we got wrong?" Then listen. If you found a likely cause in Step 3, you can ask about it directly: "I know we had trouble keeping fittings in stock this summer. Was that part of it?"

Offer one specific fix

Don't offer a general discount. Fix the thing that went wrong. If it was stock, tell them what's on the shelf now. If it was a rep change, introduce the new rep in person. If it was price, explain what you can do on the lines that matter to them most.

Then ask for one small order, not the whole account back.

Step 5: Track what works

Keep a simple log for every win back call: who you called, the reason they left, what you offered, and whether they ordered again within 60 days. After a quarter, you'll know which reasons are fixable and which aren't, and your reps will get better at the calls.

Frequently asked questions

How long after a customer stops buying should we call? As soon as you notice the change against that customer's normal pattern. The longer you wait, the more settled they get with the other supplier.

Should we offer a discount to win back a lost customer? Usually not as the first move. A discount doesn't fix the reason they left. Find the cause first, fix that, and use price only if price was the problem.

What is a good win back rate? It varies a lot by industry and how long customers have been gone. The best benchmark is your own: track every call for a quarter and measure how many ordered again within 60 days.