Free tool for HVAC shops · No signup
HVAC Missed Call Revenue Calculator
Enter a few numbers from your phones and your estimates. See what missed calls and quotes nobody followed up on are costing you each month and each year.
Your phones
Your install estimates
Adjust assumptions
About 65 missed calls and 26.0 lost jobs a month, plus 1.5 install closes a month left on the table.
8-minute overview. Answer every call, follow up every quote.
How the calculator works
- Missed calls per month = calls per week × 4.33 × the share you miss.
- Jobs lost = missed calls × the share who call someone else × your booking rate.
- Lost service revenue = jobs lost × your average service ticket.
- Stalled quote revenue = open estimates × average install quote × the close-rate gain from consistent follow-up.
Nothing you enter leaves your browser. Open Adjust assumptions to match your own call tracking and CRM numbers.
Why missed calls hit HVAC shops harder
A homeowner with a dead furnace or a failed AC unit is not shopping around for the best review. They call down the list until someone picks up. If your phone rings out during a heat wave, after hours, or while your office manager is on another line, that job usually goes to the next shop in the search results.
The bigger leak is often after the visit. Replacement quotes are the largest tickets you write, and many go quiet because no one calls back on day two, day five, and day ten. A few extra closes a month on install work can outweigh every service call you miss.
That is what Gromby Crew is built for: answering the calls, following up on open quotes, and bringing past customers back for the next job.
Frequently asked questions
How much revenue does a missed call cost an HVAC company?
It depends on your average ticket, how often answered calls turn into booked jobs, and how many missed callers try a competitor instead of waiting. Multiply missed calls by the share that go elsewhere, then by your booking rate and average ticket. This calculator does that math for you and shows a monthly and annual figure.
What counts as a missed call?
Any inbound call that does not reach a person who can book the job: unanswered calls, calls that hit voicemail, after-hours calls, and callers who hang up on hold. Your phone system or call tracking report will show the number.
Why include open install estimates?
Replacement and install quotes are the largest tickets an HVAC shop writes. Many go cold because nobody follows up after the visit. Even a small improvement in close rate on those quotes is often worth more than the service calls you miss.
Are the results exact?
No. They are estimates based on the numbers you enter and the assumptions shown under Adjust assumptions. Change any assumption to match your own call tracking and CRM data for a tighter figure.
Do I need to sign up or give my email?
No. The calculator runs entirely in your browser. Nothing you enter is stored or sent anywhere.
How do HVAC shops stop losing revenue to missed calls?
Make sure every call is answered and booked, including after hours and during peak season, and put a consistent follow-up process on every open estimate. Gromby Crew handles both: it answers calls, follows up on quotes, and brings past customers back.
Stop losing $302K a year
Watch the 8-minute overview, then talk with your Crew Advisor.
Watch the 8-minute overview →