For thirty years the deal was simple. Miss the call, get a message, ring the customer back after the job. The published numbers say that deal has ended. The modern caller treats voicemail as a dead end, not a mailbox. When a phone goes unanswered, the likely outcome is not a message waiting at five o'clock. It is the caller booking with the next shop on the list, usually within minutes. Below are the numbers as the studies report them, then the same numbers in shop math, at two shop sizes.
02 · WHAT THE DATA SAYSAlmost nobody talks to the machine
Start with the voicemail box itself. Invoca, a call analytics firm that tracks calls to home services businesses, reports that fewer than 3 in 100 callers pushed to voicemail leave a message. The box built to catch missed calls catches almost none of them. Ninety-seven callers in a hundred hear the greeting and hang up. Most had a competitor's number on the same search results page. What they leave behind is nothing: no name, no number, no line on any report.
03 · THE MENU IS NOT A FIXAuto attendants lose the caller too
Some shops route callers through an automated menu instead. The numbers there are no kinder. In a 2019 survey of 2,010 consumers, cited by the phone company Numa, 85 percent said they had abandoned a call after reaching an auto attendant, and 51 percent said one experience like that was enough to drop the business entirely. Not the call. The business. A menu does not answer the phone. It postpones the moment nobody answers it.
04 · PATIENCE IS MEASURED IN MINUTESThe caller decides fast
Nextiva's 2025 customer patience study, a survey of 400 consumers, puts a clock on it. By the five minute mark on hold, 31 percent of callers are gone. By eight minutes, 54 percent. And 75 percent say they would rather get a guaranteed callback than wait on hold at all. Callers are not demanding a live person on the spot. They are demanding not to be left hanging, and hold music, a phone tree, and a beep after a greeting all count as being left hanging.
05 · WORKED EXAMPLE, TWO TRUCKSShop math, first pass: the two-truck shop
Take a plain month at a two-truck HVAC shop. Say 100 calls come in. Invoca's home services data puts the industry's unanswered rate at 27 percent, so about 27 of those calls ring out or roll to voicemail. Apply the voicemail figure and those 27 callers produce zero or one message. The rest are gone, and the phone log is the only place they ever existed.
| Line item | A plain month |
|---|---|
| Calls in | 100 |
| Unanswered, at the industry's 27 percent | 27 |
| Voicemails left, at fewer than 3 in 100 | 0 or 1 |
| Callers gone without a trace | About 26 |
| Average HVAC repair ticket | $350 |
| If ten of those were real jobs | $3,500, gone |
Ten missed calls a month at a $350 ticket is $3,500 a month that rang your phone and left. That is before counting what the shop spent on ads and lead services to make the phone ring in the first place. You're already paying for those leads.
Shop math, second pass: the six-truck shop
Now scale it up. A six-truck plumbing outfit takes 400 calls a month and staffs a desk on weekdays. A full-time desk covers 40 of the 168 hours in a week, under a quarter of the hours a phone can ring, and that is before lunch and before the second line rings while the first is being answered. Hold the same 27 percent unanswered rate and 108 calls a month go unanswered. At fewer than 3 voicemails in 100, call it 3 messages and 105 callers gone.
ServiceTitan's call booking study, drawn from more than 3,000 US and Canadian trade businesses, says a typical shop books 42 percent of inbound calls into jobs, and shops with fewer than five technicians book 24 percent. Book the 105 lost callers at the 24 percent small-shop rate, the lowest full-day rate in the dataset, and that is 25 jobs. At HomeAdvisor's $340 national average for a plumbing job, about $8,500 a month sitting in the call log. The typical-shop rate would put it near $15,000. We used the low one.
The same ServiceTitan dataset holds one more figure worth staring at. After 6 PM, small shops book 9 calls in 100. The evening caller is the emergency caller, the burst pipe and the dead water heater, and the evening is exactly when the desk goes dark.
07 · THE CALL YOU ALREADY PAID FORNone of these calls were free
Every one of those callers cost money to generate. Searchlight Digital's February 2026 benchmark, built on $6.7 million in tracked Google Local Services spend, prices a lead at $51 in HVAC and $57 in plumbing. The same dataset puts the baseline booking rate at 44 percent, which means more than half of paid leads never become booked jobs at industry-average handling. Speed decides much of that. A Harvard Business Review audit of 2,241 US companies found that firms contacting a web lead within an hour were about 7 times as likely to qualify it as firms that waited even one hour more. The missed call and the slow callback are the same leak, measured at two points. Every missed call is money walking out the door.
There is a slower cost, further out. When a shop eventually sells, buyers read the front office. Brokers dock spreadsheet-run operations a quarter to half a turn on the earnings multiple, and buyers' analysts list CRM data and digital job records as valuation multipliers, not conveniences. A phone log full of callers nobody captured is the one record a buyer cannot pay you for.
08 · THE CROSS-CHECKThe numbers hold up outside the phone industry
The figures survive a cross-check from outside the vendors. 411 Locals ran a 30-day call-monitoring study across 85 small businesses in 58 industries and found 62 percent of calls were not answered by a live person. Next to that, Invoca's 27 percent unanswered figure for home services reads conservative, not inflated. And nothing on this page requires trusting anyone's survey. Your own phone log holds the same three numbers, and the math above works identically with yours in it.
The regulars call back. A shop with twenty years of them has more than the averages suggest. The new caller does not. Industry research, widely attributed to BIA/Kelsey, puts the share of callers who cannot reach a business and never try again at about 85 percent. The primary study is not public, so treat that one as an estimate, not a law. The new caller with water on the floor, the one your ad spend went out and found, dials the next name.
09 · WHAT IT MEANS FOR YOUR SHOPPlan as if voicemail does not exist
Because statistically, it does not. The practical conclusions from the data are short:
- Treat every unanswered call as a lost call. The message is the rare exception, not the rule.
- A better greeting will not fix it. Callers decide to hang up before the beep. The fix is answering, not apologizing.
- Speed carries the outcome. A caller who gets picked up, or texted back within a minute or two, never starts dialing the next shop.
- This is a coverage problem, not an effort problem. Nobody can hold a wrench and a phone at the same time, and nobody should have to.
If you already have somebody good at the desk, keep them. The leak is the second call while they are on the first, the call at 6:40 PM, the Saturday call. Those hours need coverage a single person physically cannot give. Coverage problems have fixes. Ninety-seven hang-ups in a hundred says the voicemail box is not one of them.
10 · METHODOLOGYHow we checked the numbers
We did not run these studies. We pulled each source page, confirmed the figures against what was actually measured, and noted the sample behind every claim: 2,010 consumers for the auto attendant figures, 400 for the hold-time study, more than 3,000 businesses for the booking rates, $6.7 million in tracked spend for the lead costs. Vendor-funded surveys are marked as industry estimates in the references. Where a primary study could not be located, as with the 85 percent no-callback figure, we said so in the text and leaned on it lightly. Where a range existed we took the low end, and both worked examples use the lowest full-day booking rate in the ServiceTitan dataset with national-average tickets. The totals on this page are built to run under, not over. The 40-of-168-hours figure is arithmetic, not a study.
One caveat runs the other direction. This page prices a single leak, the unanswered call, and your shop has five. Run the full numbers on the homepage, or put your own call volume into the calculator and read the monthly figure with your numbers in it.
Find out what your missed calls are worth
Bring one month of your phone log. We run the same math on your real numbers, out loud. Twenty minutes. We look at your call volume and tell you straight whether this pays for itself.
It carries the Pays-For-Itself Guarantee: if it has not paid for its install inside twelve months of going live, you get the install money back and it keeps working at no further install cost until it has. Booked revenue is counted at your ticket prices in a report you can audit against your own calendar and call log, and the full terms are in your install agreement, walked through on the call before you sign.
Get in TouchSources
- Invoca. "See How Much Missed Sales Calls Cost Home Services Businesses." 2022. invoca.com/blog/how-much-missed-sales-calls-cost-home-services-businesses. Source of the fewer than 3 in 100 voicemail figure and the 27 percent unanswered rate.
- Numa. "22 Business Phone Statistics." Citing a 2019 Vonage survey of 2,010 consumers. numa.com/blog/22-business-phone-statistics. Source of the 85 percent auto attendant abandonment and 51 percent business-drop figures. Industry estimate.
- Nextiva. "Customer Patience Benchmark Study." 2025. nextiva.com/blog/customer-patience-data-study.html. Source of the 31 percent gone by five minutes, 54 percent by eight minutes, and 75 percent callback-preference figures, from a survey of 400 consumers. Industry estimate.
- HomeAdvisor. "How Much Does HVAC Repair Cost?" 2025. homeadvisor.com/cost/heating-and-cooling/repair-an-hvac-system. Source of the $350 average repair ticket in the first worked example.
- ServiceTitan. "Call Booking Rates: What the Data Says." Accessed July 2026. servicetitan.com/blog/data-call-booking-rates. Source of the 42 percent, 24 percent, and 9 percent booking rates, from more than 3,000 US and Canadian trade businesses.
- HomeAdvisor. "How Much Does It Cost to Hire a Plumber?" 2025. homeadvisor.com/cost/plumbing/hire-a-plumber. Source of the $340 average plumbing job in the second worked example.
- Searchlight Digital. "Google Local Services Ads Cost Per Lead." February 2026. searchlightdigital.io/google-local-service-ads-cost-per-lead. Source of the $51 and $57 lead costs, the 44 percent baseline booking rate, and the $6.7 million tracked-spend figure.
- Harvard Business Review. "The Short Life of Online Sales Leads." 2011. hbr.org/2011/03/the-short-life-of-online-sales-leads. Source of the 7 times qualification figure, from an audit of 2,241 US companies.
- Deal Prospectors. "HVAC Business Sale Multiples 2026: What Buyers Are Actually Paying." 2026. dealprospectors.com/hvac-business-sale-multiples. Source of the quarter to half turn multiple discount for spreadsheet-run operations. Broker-reported estimate.
- FieldCamp. "HVAC Business Valuation 2026." 2026. fieldcamp.ai/blog/hvac-business-valuation. Source of the finding that CRM data and digital job records are treated as valuation multipliers. Industry estimate.
- 411 Locals. "Small Business Owners Don't Answer 62% of Phone Calls." Accessed July 2026. 411locals.us/small-business-owners-dont-answer-62-of-phone-calls. Source of the 62 percent not-answered-live figure, from 85 businesses across 58 industries over 30 days. Industry estimate.
- Cira. "Missed Call Statistics." Accessed July 2026. hicira.com/missed-call-statistics. Source of the roughly 85 percent no-callback figure, attributed to BIA/Kelsey and Forbes; the primary study is not publicly available. Industry estimate.