When you’re up in an attic or under a unit, your phone keeps ringing. Homeowners with a broken AC don’t leave voicemails. They call the next contractor on the list. Every missed call is a job that probably went to a competitor, and most owners have never put a dollar figure on it.
This post gives you a simple calculation you can do in five minutes with numbers from your own business.
The Missed Call Formula
You need three inputs:
- Average job value: what a typical booked call is worth in revenue. Use your own average ticket across repairs, tune-ups, and installs.
- Missed calls per week: check your phone’s call log or carrier statement for unanswered inbound calls during business hours, plus after-hours calls that never got a callback.
- Close rate: the share of answered calls that turn into booked jobs. Many contractors know this within a few points. If you don’t, look at last month’s answered calls versus jobs booked.
Weekly revenue lost = average job value × missed calls per week × close rate
Multiply by about 4.33 for a month, or by 52 for a year.
Worked Example
The figures below are illustrative, not benchmarks. Swap in your own numbers.
Say your average job is worth $450, and you close 40% of the calls you answer. Each missed call then costs you about $180 in expected revenue ($450 × 0.40).
- 10 missed calls a week × $180 = $1,800 per week
- That’s roughly $7,800 per month
- And roughly $93,600 per year
Loss by Call Volume
Using the same example ($450 average job, 40% close rate):
| Missed calls per week | Lost per week | Lost per month | Lost per year |
|---|---|---|---|
| 5 | $900 | $3,900 | $46,800 |
| 10 | $1,800 | $7,800 | $93,600 |
| 20 | $3,600 | $15,600 | $187,200 |
| 30 | $5,400 | $23,400 | $280,800 |
Monthly figures are rounded. These are revenue figures, not profit, but a recovered call usually costs you little beyond the work itself.
Why Calls Get Missed
Missed calls are rarely about laziness. They come from how the work is structured:
- You’re on a job. You can’t answer with your hands in a system.
- Peak season overload. Heat waves and cold snaps push call volume past what one person can handle.
- After hours and weekends. Emergencies don’t follow office hours.
- Lunch and drive time. Short gaps add up across a week.
Adjust the Numbers for Your Shop
A few tweaks make the estimate more realistic:
- Count only real leads. Remove spam and wrong numbers from your missed-call total.
- Use separate job values for repair calls and replacement estimates if they differ widely.
- Account for callbacks. If you return half your missed calls quickly and win some of them, reduce the total accordingly. Speed matters, since a homeowner often calls several contractors in a row.
What To Do With the Number
Once you have your figure, you have three options: hire a receptionist, answer calls yourself more often, or use an automated system that picks up every call and text, captures the job details, and books it. RingSured does the last one, built for home-service contractors.
Get a Free Missed-Call Audit
Not sure what your number is? Book a free audit with RingSured. We’ll look at your call patterns, estimate what you’re losing, and show you what answering every call would look like for your HVAC business. No obligation.