A missed-call cost calculation is useful only when its inputs come from your shop. Borrowed miss rates, ticket benchmarks, and conversion assumptions can produce a precise-looking number that your records do not support.
This worksheet keeps every input blank until you supply evidence.
Start with four fields:
Export a consistent period from your phone, booking, and job systems. Create one row per missed call with these columns:
| Field | Your record |
|---|---|
| Missed-call identifier | |
| Missed timestamp | |
| First callback timestamp | |
| Connected conversation | |
| Booking identifier | |
| Completed-job identifier | |
| Completed-job value | |
| Worked or holdout assignment |
Sum completed-job value only where the lead identity can be reconciled across systems. Label that total as observed value from worked leads, not caused recovery.
Then calculate the same outcome for the holdout. The worked-versus-held difference is the more defensible measure of caused lift.
Different job types can carry very different values. Preserve the actual completed-job category and value on each row rather than applying one blended industry ticket.
This also makes the result easier to audit: a reviewer can trace the total back to specific completed jobs.
Response speed and revenue outcome are different claims. The clock needs its own clear definition and timestamp evidence.
Vectrion's published claim is: sub-8-second callbacks, machine-verified on our own certification traffic. These are our own test calls — never a customer's, and never dressed up as one.
That timing claim does not predict a booking rate or a revenue total. Those outcomes remain in the contractor's own ledger.
Avoid these shortcuts:
The correct missed-call cost is not a universal benchmark. It is a traceable result built from your calls, bookings, completed jobs, and a fair comparison.
Read the callback-delay audit guide, review HVAC revenue recovery, or inspect Vectrion's measurement method.
The claims-clean answer comes from your own missed-call count, connected conversations, completed jobs, and ticket values. A generic industry total cannot establish your shop's loss.
Export the answer and miss dispositions from your own phone system. Do not substitute an industry range for the rate your shop actually records.
Behavior varies by caller and situation. Track messages, return connections, and final outcomes in your own call ledger.
Return the call while the need is active and require the vendor to publish an auditable clock definition. Vectrion's machine-verified timing claim appears in the article.
Use observed completed-job outcomes from worked leads and a randomized holdout. A modeled recovery rate is not a measured result.
Learn how HVAC contractors can prove AI answering service ROI with attributed completed jobs, a separate holdout, auditable billing, and their own records.
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We're a founding cohort. There's no public price because a price before a conversation locks you into a number before we understand your business. Here's why that's actually better for you.
Two free ways to find out, neither of which commits you to anything. Test your line and we will call it the way your customers do and send you the log. Or send your last 90 days of call logs and get a written audit back — yours to keep either way.