Missed call cost calculator for HVAC, plumbing & electrical businesses
Enter your weekly calls and typical job value. See a low–high range based on published unanswered-call assumptions.
In short: Enter weekly calls and a typical job value to get a low-to-high range of monthly and yearly revenue at risk from unanswered calls. The range uses published unanswered-call shares of 14% and 27% and a 42% default booking rate you can change.
Potential lost revenue / month
$41,490–$80,020 / year
Scenario estimate, not measured losses or a promise of recovered revenue.
Assumptions & sources
| Assumption | Value | Source |
|---|---|---|
| Low unanswered-call share (CallRail via LeadTide) | 14% | Research ↗ |
| High unanswered-call share (Invoca) | 27% | Research ↗ |
| Missed callers who leave a voicemail (and get booked) | 3% | Research ↗ |
| Your booking rate (overrides the ServiceTitan default) | 42% | Research ↗ |
| Weeks per month (52 weeks / 12 months, rounded; modeling convention) | 4.33 | 52 ÷ 12 |
- Low unanswered-call share (CallRail via LeadTide)
- 14% · Research ↗
- High unanswered-call share (Invoca)
- 27% · Research ↗
- Missed callers who leave a voicemail (and get booked)
- 3% · Research ↗
- Your booking rate (overrides the ServiceTitan default)
- 42% · Research ↗
- Weeks per month (52 weeks / 12 months, rounded; modeling convention)
- 4.33 · 52 ÷ 12
We assume 3% of missed callers leave voicemail and are recovered at your booking rate; all other missed callers are assumed lost. The source reports fewer than 3%. These are scenarios, not measured losses for your business. Use your actual booking rate if you know it.
01 / About the estimate
Is this my actual lost revenue?
No. These are scenarios using your inputs and published benchmarks. Your call logs, repeat callers, and actual booked jobs will give you a more accurate picture.
Why show a range?
The model uses 14% and 27% unanswered-call shares from different sources. The difference shows how sensitive the estimate is to your actual missed-call rate.
Can I change the booking rate?
Yes. The default is 42%, based on a ServiceTitan benchmark. Replace it with the share of relevant calls your business typically turns into booked jobs.