What your phone does during the first heat wave

The first real heat of the year does not arrive gradually. It lands on a Thursday, and by Friday afternoon every marginal compressor in your service area has quit on the same day. Your phone knows before you do. It rings while your tech is in an attic at a hundred and thirty degrees. It rings while you are already on the other line. It rings a fourth time from somebody who has called two other companies this morning and will take whoever answers. That week is when an HVAC shop books the most work and loses the most work, usually without ever finding out which calls got away.

01The week your phone changes shape

Heat does not break air conditioners evenly. It breaks the ones that were already limping, and it breaks them all at once, because that is the first week the equipment runs eighteen hours a day instead of four. A capacitor that held up in May at forty minutes of runtime an hour does not hold up in July at fifty five.

So the calls do not come as a gentle rise. They come in a clump, usually inside about three days, and inside those days they clump again. Early morning, from people who woke up in a house that never cooled down overnight. Late afternoon, when the west facing rooms have been baking since noon and somebody gets home, puts a hand on a vent, and feels warm air.

I am not going to put a multiplier on that, because I do not have a published number I trust for how much call volume rises in a heat wave, and inventing one would be worse than leaving it out. You already know the shape of it from last year. What matters is what that shape does to a phone line that was sized for an ordinary Tuesday.

An ordinary Tuesday has gaps in it. Somebody can pick up the second call because the third one is not happening yet. A heat wave takes the gaps out. Every call now lands on top of another call, and the phone starts doing what phones do when nobody is free, which is quietly hand people to voicemail and not tell you about it.

02Why your busiest week is also your worst week for answering

The same heat that makes the phone ring is the reason nobody can get to it.

Your techs are in attics and crawlspaces and standing on a rooftop unit at two in the afternoon. Their phones are in the truck, or their hands are gloved and full of a contactor. If you have a dispatcher, she is on a call, and while she is on that call the other three ring out behind her. If you are the dispatcher, you are also doing the estimate, the parts run, and payroll, and you are doing all of it in a week where the parts house is out of the capacitor you need.

This is the same problem plumbers have, and I wrote about the mechanics of it in the calls you lose while you are under a sink. The phone rings at exactly the moment both of your hands are committed to something you cannot walk away from. HVAC in July is that, stretched across a whole company for a week.

What makes it hard to see is that the busy week feels successful. You are booked out. Trucks are moving. The invoices at the end of the week are the best you have had all year. Nothing about that week feels like a week you lost money, so nobody goes looking for the calls that did not get answered, and the number stays invisible until the next one.

03A hot caller is not a patient caller

Somebody sitting in an eighty eight degree living room with a baby is not going to leave a voicemail and wait for you to get back to them. They are working down the search results. First company that answers gets the conversation, and usually gets the job.

The published research on response speed measures web inquiries rather than phone calls, so take it as the shape of the behavior rather than a number about your phone. Harvard Business Review audited 2,241 US companies and timed how fast they replied to inbound inquiries. The average first response took 42 hours. Only 37% answered within an hour. 23% never answered at all. The MIT work on response time found that replying in five minutes made a company about 100 times more likely to actually connect with the person than replying in thirty.

On a phone line, that same drop off is compressed into something much shorter than five minutes. It is four rings. The caller is not deciding whether your response was fast, they are deciding whether anything happened at all, and then they are dialing the next name on the list while your voicemail greeting is still playing.

Work out what that costs you with your own average ticket rather than anybody’s benchmark. I walked through the arithmetic in what a missed call actually costs, and the short version is that you only need your own two numbers: what a job is worth to you, and how many calls went unanswered. In a heat wave the second number is at its highest and the first one is too, because half of those callers have a system old enough that the conversation ends in a replacement quote.

04What should happen on the third ring

A better voicemail greeting does not fix this. Something has to pick up, get the caller talking, and send you a message you can read between jobs.

What you want on your phone is short. Name and callback number. The address as they gave it, including the unit or the gate code. What is happening in their own words, so “it runs but blows warm” and “it is not turning on at all” stay different problems instead of both becoming “no cooling.” How hot it is inside, if they said. Whether anyone is home to let a tech in today. And a link to the recording, so anything that reads strangely can be checked in thirty seconds instead of guessed at.

Then you decide. Not the software. You are the one who knows that the job you have at four is twenty minutes from this address, and that you have a spare evaluation slot tomorrow morning you have been holding back. A system that writes jobs onto your calendar on its own will eventually send a truck to a house nobody expected, which is a worse day than a missed call, and I made that case at length in why an AI should never book a job without confirming it first.

Two things it should never do on these calls, and heat wave week is exactly when both get tempting. It should never diagnose. A caller describing a smell or a noise wants to be told what is wrong, and the honest answer is that a person has to look at it. It should never quote a price. In a week when everyone in town is quoting emergency rates, a number said on the phone by something that has not seen the equipment is a fight waiting in a driveway on Thursday.

05The calls nobody should get clever with

Some calls should skip all of it and go to a human immediately.

A burning smell from the unit or the panel. Sparking, or a breaker that keeps tripping when they reset it. Anyone describing heat sickness, dizziness, or an elderly person or an infant in a house that has been over ninety inside for hours. Those calls do not get qualified, they do not get a message taken, and they do not get “somebody will text you back.” They get forwarded to a phone a person is holding, right then.

That means the setup needs a human number behind it, and the number has to belong to somebody who is genuinely available that week. An escalation path that points at a phone sitting in a truck cup holder is not an escalation path, it is a delay with good intentions.

The rest of it matters less than owners expect. A call about warm air on a Saturday is not an emergency in the safety sense even though it feels like one to the caller. Those can wait for a message and a callback, as long as the callback actually happens, and happens in minutes rather than at seven that evening.

06Set this up in May, not in the middle of it

Nobody configures a phone system during a heat wave. You will be in an attic. The week to do this is the boring one before, and it takes an afternoon.

Start by finding out what last year actually looked like. Pull your call log for the hottest week of last summer and count the calls that came in against the calls that got answered. Your carrier has this, and so does your VoIP dashboard if you are on one. I wrote the method out in how to count the calls your business is missing, and it is worth an hour because it turns an argument into a number.

Then decide three things while you are calm. Which phone the emergencies go to, by name, and what that person is doing in July. What has to be in a message before you are willing to act on it. And whether your maintenance plan customers get handled differently, because a system cannot know that the Hendersons pay you every year unless somebody tells it.

Last, listen to your own line. Call your business number from a phone that is not yours, at eight in the evening, and sit through whatever happens. Most owners have not heard their own after hours greeting in two years. It usually says a business name, a beep, and nothing that would make a hot, annoyed person willing to wait. If a setup like ours does nothing else for you, replacing that beep with something that takes an actual message is most of the value.

Frequently asked questions

Will people hang up when a machine answers?

Some will. Anyone who tells you otherwise is selling. Compare it to what those callers actually get in a heat wave, though, which is the beep. Not your best receptionist on a quiet day, because she is on another call. People hang up on voicemail at a much higher rate than they hang up on something that answers and starts asking questions, and the ones who hang up on voicemail leave no trace at all.

Can it tell the difference between a real emergency and a house that is just hot?

Not by diagnosing, and it should not try. What it does is listen for the words that mean danger, burning, smoke, sparking, chest pain, someone elderly in a very hot house, and hand those calls straight to a person without asking anything else. Everything else gets captured and sent to you, with how hot the caller said it was inside. You are still the one deciding what is urgent, which is correct, because you know your customers and your schedule and a script does not.

What about my maintenance plan customers, do they get priority?

Only if you tell it who they are. A list of phone numbers is enough to flag those calls in the message so you see the plan before you see anything else. Without a list it treats them the same as anyone else, which is usually not what an owner wants during the week when plan holders are calling to use the thing they paid for.

Does this replace my dispatcher in August?

No. It picks up the calls your dispatcher cannot physically reach because she is already on the phone. In a normal week that might be a handful. In a heat wave it is the ones stacked three deep behind whoever she is talking to. She stays the one who dispatches, and she stops being the bottleneck at the moment your call volume is at its annual peak.

We already forward to a call center during busy season. Is this different?

Somewhat. The parts that overlap are that both answer and take a message. The parts that differ are cost, since most services bill by the minute or the call and a heat wave is when your minutes spike, and consistency, since the operator you get in July is often a temp reading a script. Whether that trade is worth it depends on what you pay now. I put the numbers side by side in answering service, AI, or voicemail.

The bottom line

The heat wave is not the problem. The heat wave is the audit. It takes a phone setup that works fine at ordinary volume and shows you exactly where it fails, and it does that in the week when each dropped call is worth the most to you. Everything about that week is loud except the part that costs you, which is silent by design, because a voicemail nobody left does not appear on any report you will ever open.

These days we book appointments for roofing companies: we find homeowners looking for roof repair or replacement, answer their replies and book them into your system. If you run a roofing company, see how it works at rushdial.com/roofing.