HVAC missed call calculator
What missed calls cost an HVAC company.
A no-heat or no-cool caller who reaches voicemail often calls the next company on the list. Enter your monthly calls, the share you miss, how often a reached caller books, and your average ticket to see the revenue at risk each month. The starting numbers are assumptions; replace them with your own.
Calculator
Estimate monthly revenue at risk.
The starting numbers are assumptions, not industry figures. Change any of them to match your business.
Example: $5,906 per month at risk
With 150 calls a month, 25% of them missed, 35% of reached callers booking, an average service or repair ticket of $450, and 30% of missed calls after hours, that is about 37.5 missed calls (11.3 after hours), 13.1 lost jobs, and $5,906 in monthly revenue at risk (about $70,875 a year).
Guide
Use this before you automate the work.
A no-heat or no-cool caller who reaches voicemail often calls the next company on the list. Enter your monthly calls, the share you miss, how often a reached caller books, and your average ticket to see the revenue at risk each month. The starting numbers are assumptions; replace them with your own.
Step 1
Start from your own phone report
The defaults are placeholders, not HVAC industry figures. Pull last month from your phone system or call-tracking tool and swap in your real numbers.
- Count every inbound call: main line, ad numbers, and website call buttons.
- Missed calls include voicemail, calls during lunch, and calls that rang while the office was on another line.
- Use your booking rate on calls you actually answered, not on every website visit.
Step 2
Run it for a normal month and a peak month
HVAC calls swing with the weather. The first heat wave or cold snap brings a rush of calls while the crew is already booked, and that is when calls go unanswered. Run the calculator twice and compare.
- For a peak month, raise monthly calls and the share of calls you miss.
- The after-hours share shows how many missed calls came in while the office was closed.
- Compare both results before deciding what call coverage you need.
Step 3
Read the result as revenue at risk
The result estimates the work sitting in calls nobody picked up. It is not a promise of recovered revenue: what you win back depends on how fast callers hear from you, your prices, and whether you have room on the calendar.
- Missed calls = monthly calls × the share of calls you miss.
- Lost jobs = missed calls × the share of reached callers who book.
- Revenue at risk = lost jobs × average ticket.
Questions
Before you hand this off
Are the default numbers HVAC industry averages?
No. They are starting assumptions so the calculator shows a result right away. Replace each one with your own numbers from your phone system and job records.
Is there a benchmark I can compare my missed-call rate to?
Our guide on missed calls by industry cites Invoca platform data that put unanswered calls to home-services businesses at 27% (May 2024). Your own call log is still a better number to use than any benchmark.
Should I count maintenance plan and existing customer calls?
Count the calls that could become paid work: repairs, replacements, and maintenance visits. Leave out vendor calls, sales pitches, and wrong numbers so the share of missed calls is not inflated.
What does TeamShift do with a missed call?
TeamShift returns missed calls and texts in your approved wording, logs what each caller needs, and sends bookings and quotes to you to approve. Nothing goes out in your name until you say so.