The Missed-Call Math Every Contractor Should Run

By Aaron Roberts · September 21, 2026 · 6 min read

Every contractor I talk to knows they miss calls. Almost none of them know what a missed call actually costs. So they don't fix it, because "answering services cost money" feels like a reason.

Here's the math that ends that argument. Run it with your own numbers, but here's a typical HVAC shop around here.

Step 1: How many calls are you missing?

Pull your phone logs. A solo operator or small crew misses a lot more than they think, because you're on a roof, under a sink, or driving. Industry surveys put missed calls for small service shops at 20% to 30% of inbound. Say you get 50 inbound calls a week and miss 25%. That's 12 to 13 missed calls a week.

Step 2: What was behind each missed call?

Not every missed call was a job. Some were telemarketers, some were your wife, some were "do you do siding?" when you don't. From the call reports I've watched on real businesses:

• 25% were real job leads — someone ready to book
• 25% were near-leads — questions that a good answer would have turned into bookings
• 50% weren't jobs

Skeptical? That 25% is conservative. The callers who reach voicemail mostly don't leave one, and the ones who do call the next shop on the list. The lead doesn't wait for you.

Step 3: The math

12 missed calls a week × 25% real leads = 3 lost jobs a week. Call it 150 lost jobs a year.

At a $300 average ticket (low for HVAC, high for plumbing repair, about right for roofing repairs):

150 jobs × $300 = up to $45,000 a year that may be going to your competitor. Not all of it is recoverable — some callers find someone else, some were never going to book — but a share of it is, and the only way to know your share is to count your own missed calls.

And that's just the first job. Do right by that customer and they call you for the next ten years. The lifetime number is triple.

Step 4: What it costs to stop the bleeding

A managed AI receptionist runs a small fraction of that — one flat monthly rate, no meter, no surprises — to protect a potential $45,000-a-year leak. Whether it pays for itself depends on your actual missed-call volume, your booking rate on those calls, and your average ticket — which is exactly what the math above (run on your real numbers) is for.

Run your own numbers

You need three numbers: calls per week, your miss rate (guess 25% if you don't measure it), and your average ticket. Multiply it out. If your lost-job number comes back under $5,000 a year, you're fine, keep your voicemail. If it comes back at $20,000 or more — and it will for most shops — you know exactly what the fix is worth.

This is the same math we walk through in our AI Assessment, with your actual phone data instead of my example numbers. If the math doesn't work, we'll tell you. It usually works.