What missed calls cost an HVAC company.
November 7, 2026 · 6 min read · Frontdesk AI
A missed call costs an HVAC company the job that caller would have booked, and often the maintenance and replacement work that follows. To put a number on it, multiply the calls you miss each month by the share that were real jobs, the share of those you'd normally win, and your average job value. The calls to count first are the ones that come in while every tech is out and after hours.
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What happens when nobody picks up
Most callers don't wait for you. In a 2025 CallRail survey of 1,000 U.S. consumers, only 42% said they leave a voicemail, 21% said they immediately call another business, and 82% said they'd call a competitor if a business didn't answer. That survey covers all kinds of businesses, not HVAC or Canada, so treat it as a direction rather than your number.
HVAC is harder on voicemail than most trades. Someone with no heat isn't shopping around for the best review. They're working down a list until someone answers, and the first company to pick up usually gets the job. The cost is hard to see, because a caller who hangs up never appears in your invoices.
The sum, using your own numbers
Four numbers are all you need, and you already have them:
| Number | Where to find it |
|---|---|
| Missed calls a month | Unanswered calls in your phone provider's call log. Two busy weeks, doubled, is a fair start. |
| Share that were real jobs | Leave out spam, suppliers and customers checking on an existing job. Call a sample back if you're not sure. |
| Close rate | Of the real enquiries you do answer, the share that book. |
| Average job value | Last year's service invoices divided by the number of jobs. |
A worked example
These numbers are made up to show the sum. A shop misses 60 calls in a busy month. Half are real enquiries, so 30. It normally wins half of those, so 15 jobs. At an average of C$450 a job, that's C$6,750 of work in that month.
Don't multiply that by twelve: HVAC calls come in waves. Run the sum for a peak month and a quiet one. And count sales as sales, not profit. The better question is how many extra jobs it takes to cover the cost of answering the phone.
Say the same shop keeps C$180 of gross profit on a job. The Business plan, which includes urgent-call routing, is C$499 a month plus tax, so it takes 3 extra jobs a month to cover it. There's also a C$449 setup payment, which comes back as credit if you stay. If your call log shows far more missed work than that, it's worth a trial on your real calls. If it doesn't, you've learned that your phones are fine, and that's useful too.
The calls that cost the most
- The first cold snap and the first heat wave. Calls arrive together, and one person can only take one at a time.
- Calls while every tech is on a job. A small shop rarely has someone at a desk, and nobody answers from an attic.
- Nights and weekends. Sort these before they happen with an after-hours plan.
- Replacement enquiries. They come in less often, but a lost furnace or heat pump quote is worth far more than a lost service call.
A new customer can also be worth more than the first job, through tune-ups, a maintenance plan and an eventual replacement. Leaving that out of the sum keeps it conservative.
Four fixes, cheapest first
- Measure it. Read your call log for two weeks before changing anything.
- Fix your voicemail. Say when you'll call back, then do it quickly.
- Use no-answer forwarding. Your team answers first and missed calls go somewhere useful. Here's how to set it up.
- Get help answering. Compare an answering service and an AI receptionist, or see what each costs in Canada. If every call needs a dispatcher's judgment from the first word, a live person may suit you better.
Where Frontdesk AI fits
Frontdesk AI for HVAC companies answers while your techs are on a job and after hours, takes the caller's details and books service calls, within your plan and a supported integration. You keep your number and get a summary of each call.
We don't have published HVAC results yet. Our published numbers come from a Brampton clinic, where about 1 in 7 of 354 calls came in after hours. Your calls will be different, which is why the sum above uses your numbers and not ours.
Sources, checked November 2026