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How much are missed calls costing you?
Missed Call Cost Calculator for Service Businesses
Service businesses lose 30-40% of inbound calls to peak-time overflow, after-hours gaps, and dispatch friction. Plug in your trade and your missed-call rate. The math is straightforward.
How the calculation works
The formula is simple: average ticket value × close rate × missed calls per week × 52. Each variable has a per-trade default built into the widget, drawn from published industry research. Here is where those numbers come from and why they differ by trade.
Ticket value. The widget uses repair or first-visit averages, not installed-job averages, because those are the calls that come in cold from search. HVAC repair lands at $400-$600 (Invoca State of Service Calls 2024). Roofing storm-repair averages $800+ because storm-damage jobs rarely get split across multiple contractors. Dental new-patient first visit runs $650-$1,200 depending on whether a cleaning, exam, and X-rays are bundled (American Dental Association fee data).
Close rate. This is the percentage of callers who, having actually reached a live person or an answering system that captures intent, go on to book the job. For HVAC, Invoca's 2024 data puts this at 36-55%, with the top of the range during temperature emergencies. Dental runs 45-60% because new-patient callers have already done their insurance research before dialing. Roofing sits lower at 30-45% because storm-damage callers typically request 2-3 quotes before committing. Close rate is the multiplier with the most variance across operators — a trained dispatcher or a well-scripted AI receptionist who offers specific availability slots can lift this 8-12 percentage points.
Why the math is conservative. The formula uses single-job ticket value, not customer lifetime value. It also assumes 100% of recovered calls would close at the stated rate, which is a ceiling, not a guarantee. The "What this calculator cannot tell you" section below covers the full list of what the model misses.
Sources: Invoca State of Service Calls 2024, BrightLocal Local Consumer Review Survey 2024, HubSpot State of Service 2024, American Dental Association 2024 Survey of Dental Fees. The widget code is open — inspect it at /widgets/missed-call-calculator.js.
What good looks like: industry benchmarks
Most service businesses have no idea where they stand on call answer rate until they look at the data. Here is how the industry segments, based on BrightLocal's 2024 local service business survey and VantaWeb's own customer cohort.
| Segment | Missed call rate (business hours) | After-hours miss rate |
|---|---|---|
| Top quartile — best-in-class operators | Under 5% | Under 20% |
| Median — typical regional contractor | 25-35% at peak season | 55-65% |
| Bottom quartile — owner-operated, solo dispatch | 40-50% | 70-80% |
VantaWeb internal data across 27 customers at 90 days post-deploy shows a median reduction from 35% missed calls to 8% missed calls during business hours. After-hours miss rate dropped from 72% to 11% on the same cohort. These are measured call log outcomes, not projections. Individual results vary by call volume, trade, and how thoroughly the AI is configured for the specific scheduling system in use.
Peak season is the high-stakes window. An HVAC operator running 40% miss rate in July at 25 inbound calls per day is losing roughly 10 bookings a day. At a $500 average ticket and 45% close rate, that is $2,250 in daily lost revenue — over $67,000 across a 30-day heat wave. The calculator makes this concrete for your specific numbers. See the AI receptionist overview or pricing page to understand what closing that gap costs.
What this calculator cannot tell you
The model is intentionally conservative. Several dimensions of true cost are not captured in the formula, and it is worth understanding what you are not seeing.
- Customer lifetime value. The formula uses single-job ticket value. BrightLocal's research puts customer lifetime value for residential service trades at 3-5x annual first-year revenue once repeat service, referrals, and seasonal maintenance agreements are factored in. For HVAC, a missed $500 repair call is often a missed $2,000-$3,000 lifetime relationship.
- Reputation cost. Unanswered calls generate negative reviews. A caller who gets a busy signal or voicemail at 7 PM is more likely to leave a one-star "could not reach anyone" review than to quietly move on. Review damage is compounding and shows up in organic ranking, not just direct conversion.
- Spanish-speaking caller capture. In many US metros, 15-25% of inbound trade calls come from Spanish-preferring households. If your answering process is English-only, those callers are effectively lost regardless of whether someone picks up. The calculator does not model language-gap attrition.
- After-hours emergency premium pricing. Emergency service rates typically run 1.5-2x normal ticket value. The calculator uses standard ticket defaults. If your business takes emergency calls — HVAC heat-of-summer failures, plumbing floods, emergency dental — the actual revenue per recovered after-hours call is higher than the widget shows.
Trade-specific questions
What is a good close rate for HVAC inbound calls?
Industry data puts HVAC inbound close rates at 36-55%. The wide range reflects seasonality: during summer AC peak or winter heating emergencies, callers are already committed and close rates push toward the top of that band. Off-peak, you are often competing against 2-3 other quotes and the rate drops toward 36%. A well-trained dispatcher or AI receptionist that captures caller intent and offers same-day availability typically holds 45-50% year-round. See the HVAC AI receptionist page for trade-specific benchmarks.
What is the average dental new-patient lifetime value?
The American Dental Association estimates new-patient lifetime value at $1,500-$3,000 depending on treatment mix and retention rate. That figure dwarfs the first-visit revenue of $650-$1,200, which is why dental practices treat a missed new-patient call as a serious loss event. The calculator uses first-visit ticket value by default. For a lifetime-value view, multiply the result by 2.5-4x. The dental AI receptionist page covers HIPAA-compliant answering for dental front desks specifically.
How many missed calls is normal for a small contractor?
BrightLocal's 2024 local consumer survey found that 30-40% of inbound calls to small service contractors go unanswered during peak times — morning rush, lunch, and evenings. At slower periods, miss rates typically drop to 10-15%. If your answering rate is below 70% during business hours, you are actively losing bookings to competitors who pick up. The median contractor in VantaWeb's customer cohort was at 35% missed before deploying an AI receptionist.
What happens to the missed calls if I do not answer?
According to BrightLocal's consumer research, 67% of callers who do not reach a service business on the first attempt move immediately to the next listing in search results without leaving a voicemail. They do not call back. Voicemail conversion for service trades is typically under 10%, so the revenue loss from a missed ring is nearly total. This is why the calculator uses 100% as the default loss rate on a missed call — for most trades, most missed calls are gone permanently.
Will an AI receptionist recover all missed calls?
Honestly, no. AI answering captures 90%+ of after-hours and weekend calls that previously went to voicemail, and roughly 70% of peak-overflow calls where a caller would otherwise hit a busy signal. The remaining 30% of peak overflow involves complex situations — multi-party calls, callers who need a specific technician, emergency dispatching requiring real-time judgment — that still need a human in the loop. Realistic recovery is 60-75% of the calculated loss figure, not 100%. The calculator gives you the ceiling; expect the floor to be somewhat lower depending on your call mix.
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Use it wherever it helps your readers — your missed-call audit page, your "why answer fast matters" blog post, your service-trade tools page. We just ask that the "Powered by VantaWeb" footer line stays.
The actual fix
VantaWeb's AI receptionist Anna answers every inbound call 24/7, books jobs into your scheduling system, and routes urgent calls to a human. Most service businesses are live within 5-7 days. Plans start at $149/mo.