Missed-call ROI for HVAC and plumbing shops: the Alberta math

By Jared Ohman · Updated July 2026

If your shop misses even a quarter of its calls, you're not losing “some” business. You're handing it to whoever answers the phone next — usually a competitor. Here's the math, using real numbers, not guesses.

~62%

of small-business calls go unanswered by a person

370

calls in ~24 hours during Calgary's 2018 chinook thaw

$4,550

monthly revenue at risk for a mid-size Alberta shop

The baseline: most small businesses miss most of their calls

A widely cited study by 411 Locals monitored 85 small businesses across 58 industries for 30 days. Only 37.8% of inbound calls were answered live. Another 37.8% went to voicemail, and 24.3% got no response of any kind — no ring-out, no voicemail option, nothing.^[1] Add it up: roughly 62% of calls to small businesses go unanswered by a person.

That number holds up across other datasets too. CallRail's analysis of 100,000 small-business phone lines found only 44% of calls were answered by the second ring, and answer rates dropped below 20% after four rings.^[2] Home services specifically fare worse than the general small-business average — Invoca's research puts trades in the 65-70% missed range.^[2]

That gap makes sense if you run a trades shop. Your receptionist, if you have one, is also answering the door, taking payments, or on the other line. Your techs are on roofs, under sinks, and in crawlspaces. Nobody's sitting by a phone waiting for it to ring.

Why “voicemail” doesn't fix it

When a call goes to voicemail, the caller usually doesn't leave one. Depending on the study, somewhere between 60% and 85% of callers who hit voicemail hang up without leaving a message.^[3]^[4] And speed matters more than people think: research from MIT Sloan found that contacting a web lead within 5 minutes instead of 30 makes you roughly 100 times more likely to make contact, and 21 times more likely to qualify it.^[5] A homeowner with a burst pipe or a dead furnace isn't waiting for a callback. They're calling the next number on Google.

The Alberta multiplier: winter doesn't wait for business hours

Here's the part the national averages miss: Alberta's call volume doesn't spread evenly across the year. It spikes hard, and it spikes after hours.

During the January 2024 cold snap, Calgary and Edmonton heating companies reported being “flooded with calls,” with some homeowners told they'd wait up to three days for a technician as temperatures hit −40°C.^[6]^[7] That's not a slow news day. That's a predictable annual event.

The reverse happens too. In a 2018 chinook thaw, Calgary's fire department logged 370 calls in roughly 24 hours as the temperature swung from −30°C to −1°C, about a third of them related to burst pipes.^[8] Every one of those homeowners was calling plumbers at the same time your shop was.

If your after-hours line goes to voicemail during exactly the two weeks a year when call volume triples, you're missing the highest-value jobs of your entire year — the emergency callouts that pay after-hours rates.

Running the numbers for your own shop

You don't need industry averages once you have your own numbers. Here's the formula:

Missed calls per month × average job value × close rate on answered calls = monthly revenue at risk

Worked example for a mid-size Alberta HVAC shop:

40 inbound calls per week (~173/month)
30% miss rate — below the national average, assuming a decent front desk — is ~52 missed calls/month
Average ticket value: $350
A conservative 25% close rate on answered calls

That's 52 missed calls × $350 × 25% = roughly $4,550 in lost revenue per month, or about $54,600 a year — before the after-hours emergency premium, and before accounting for home-services miss rates typically running higher than the 30% used here.^[2]

What actually closes the gap

A part-time receptionist costs real money and still isn't answering at 2 a.m. A national US-based AI answering service bills in USD and doesn't know what a chinook is. A per-minute Canadian answering service gets expensive fast once your call volume climbs during a cold snap — which is exactly when you need it most.

An AI receptionist built for Alberta trades answers every call, day or night, triages what's actually an emergency (a dead furnace at −30°C is not the same urgency as a routine filter question), quotes the after-hours fee up front, and books the job — or texts you if it's a true emergency. See how the call flow works in how an HVAC answering service works, or check flat CAD pricing against what you're currently losing to missed calls.

The calls you miss are the jobs you lose. The math above just tells you how many, and how much.

Common questions

How many calls do small businesses actually miss?

A 411 Locals study that monitored 85 small businesses for 30 days found only 37.8% of inbound calls were answered live — roughly 62% went unanswered by a person. CallRail's analysis of 100,000 small-business lines found only 44% of calls answered by the second ring. Home services run worse than average: Invoca's research puts trades in the 65-70% missed range.

Why doesn't voicemail solve the problem?

Because most callers don't leave one. Depending on the study, 60% to 85% of callers who hit voicemail hang up without leaving a message. A homeowner with a burst pipe or dead furnace isn't waiting for a callback — they're calling the next number on Google.

What makes Alberta different from the national averages?

Call volume here doesn't spread evenly — it spikes hard around weather events, and it spikes after hours. During the January 2024 cold snap, Calgary and Edmonton heating companies were flooded with calls at −40°C. In a 2018 chinook thaw, Calgary fire crews logged 370 calls in about 24 hours, roughly a third related to burst pipes. If your after-hours line goes to voicemail during those two weeks, you miss the highest-value jobs of your year.

How do I calculate what missed calls cost my own shop?

Missed calls per month × average job value × close rate on answered calls = monthly revenue at risk. A mid-size Alberta HVAC shop with ~173 calls a month, a 30% miss rate, a $350 average ticket, and a 25% close rate is losing roughly $4,550 a month — about $54,600 a year — before the after-hours emergency premium.

Sources

External figures accessed July 2026. Studies get updated — check the source for the latest numbers.