What a missed call really costs

Every HVAC owner knows they miss calls. Almost nobody knows how many, or what those calls were worth. Here's how to put a real number on it using your own figures — no industry averages required.

The formula

Monthly calls × share you miss × share that would have booked × average ticket = money walking to the next shop.

Each piece is something you can check in an afternoon:

• Monthly calls. Your phone carrier or call-tracking app shows inbound call volume. If you don't track it, count a normal week and multiply by four.
• Share you miss. Count the missed calls and voicemails for that same week — and the calls that came in after hours. Most owners are surprised by this one.
• Share that would have booked. Of the calls you do answer, how many turn into a booked visit? Use that.
• Average ticket. Your average repair invoice. Treat replacements separately (more on that below).

A worked example

Say a two-truck shop gets 200 calls a month, misses 20% of them, books 40% of the calls it answers, and averages $450 a repair ticket.

Step	Number
Calls missed a month (200 × 20%)	40
Would have booked (40 × 40%)	16 jobs
At a $450 average ticket	$7,200 a month

You won't win all of those back — some callers try again, some were never going to book. But even a third of it is $2,400 a month in repair work, before you count a single system replacement.

Why the averages lie: one replacement changes the math

Repair tickets are only half the story. Angi puts the average HVAC replacement around $7,500, with real jobs running from about $5,000 to well over $20,000. One missed call from a homeowner whose system just died in July can be worth more than a month of missed repair calls combined.

That's why "how many calls do I miss?" matters less than "which calls do I miss?" The expensive ones tend to come in when you can't pick up: evenings, weekends, and the first brutal heat wave of the summer when everyone's unit quits at once.

What the industry numbers say (and why yours matter more)

Published missed-call statistics vary wildly, so treat them as a sanity check, not a forecast:

• CallRail's 2025 benchmark of 1.1 million leads found home-service businesses missed about 14% of calls.
• ServiceTitan has published that roughly 18% of home-service calls go unanswered on weekdays and 41% on weekends.
• Call-tracking vendors selling answering products report higher figures — Invoca, for example, puts it around 27%.

The spread is the point: the right number for your shop is the one in your own call log. A shop that answers well during the day can still lose most of its weekend calls.

The hidden cost: shared leads

Missed phone calls are only one leak. If you buy leads from Angi, Thumbtack or Facebook, that same homeowner often goes to several pros at once, and the first one to respond usually gets the job. A lead you reply to three hours later isn't a slow lead — it's usually a lost one you paid for.

Lead-response research going back to Harvard Business Review found the odds of reaching a lead fall off sharply after the first five minutes. A mystery-shop of 466 home-service companies found 95% didn't respond within five minutes. Being first is cheap when everyone else is slow.

How to stop the leak

You have three options, roughly in order of cost:

1. Answer more yourself. Free, but it means stopping work mid-job, and it doesn't cover nights.
2. Hire an answering service or office person. A full-time office hire in Vegas runs $3,500+ a month and covers 40 hours a week. Answering services cover more hours but usually just take messages.
3. Use a system that answers, triages and books. An AI receptionist answers every call at any hour, flags emergencies, books or captures the job, and texts you a summary — and the same system can text your Angi and web leads in under a minute.

Whichever you pick, start by measuring. Run the formula above on last month's calls. If the number is bigger than you expected, it's worth fixing this summer instead of next.