The math of missed calls: why $350 is only the beginning

Most contractors say their average service call is "around $350." That's the number they reach for when someone asks "what's a missed call cost you?"

It's the wrong number. The cost of a missed call is much bigger than the call itself. Here's how to actually do the math.

The four layers of cost

Every missed call has four costs stacked on top of each other. Most shops only count the first one.

1. The job itself

If your average ticket is $350 and your inbound close rate is 60%, a missed call has an expected value of $210. That's the floor.

2. The lifetime customer

New service customers come back. The average HVAC or plumbing customer will book three more jobs over the next four years if you do good work on the first one. At $350 a ticket, that's another $1,050 in forward revenue.

So the missed call isn't a $210 expected loss. It's closer to $840 over the customer lifetime, before you count anything else.

3. The reviews and referrals

Roughly 1 in 4 customers will leave a positive review or refer a neighbor in their first year of service with you. A new customer is worth, on average, 0.4 additional new customers from word-of-mouth alone.

Apply that to the lifetime number and you're looking at another ~$300 per missed call in foregone referrals.

4. The shop reputation

This one is harder to quantify but it's real. Customers who never get called back leave a bad taste, and a fraction of them will leave you a 1-star review for "they never called me back." A single 1-star review reduces your call volume by an estimated 1–3% for the next 12 months.

The full number

Add it up: a single missed call has an expected revenue impact closer to $1,150 per call, not $350. Miss 10 calls a week and you're losing $11,500 a week in expected lifetime revenue — $46,000 a month, $552,000 a year.

Most shop owners hear that number and don't believe it. Then they run the math and they do.

What to do about it

Two paths, in order of cost-effectiveness:

1. Catch every missed call automatically. Auto-text missed callers in under 10 seconds. AI handles the conversation, books the job, and only escalates to you when needed. This is what Whitrack does. It costs $99–$199/month and pays back in week one for most shops.
2. Hire an answering service. Real humans answer your missed calls. Costs $300–$1,500/month depending on volume, and the quality varies. Better than voicemail. Worse than AI that knows your pricing, your service area, and your calendar.

Curious what your specific number is? Try our missed-call cost calculator — move the sliders to match your shop, get a real annual figure in 30 seconds. No email gate.