Voice AI for plumbers: answering the calls you can't take

You’re lying on your back under a kitchen sink, both hands full, when the phone starts buzzing in your pocket. You can’t answer it. By the time you’ve dried off and called back, they’ve already rung the next plumber on Google, and booked them.

That’s not bad luck so much as the structure of running a plumbing business: the work that earns the money is the same work that stops you answering the phone.

Why missed calls hit plumbers harder than most trades

Three things compound the problem.

The work physically prevents you answering. You’re under a boiler, in a loft, or holding a joint together while the compound sets. A ringing phone isn’t an interruption you can take; it’s a job you’d have to drop.

The calls are urgent, which makes them unrecoverable. A burst pipe or a dead boiler isn’t a “ring around next week” job. That caller wants someone today and will take the first person who picks up. Urgency is usually described as what makes these calls valuable; it’s also what makes them impossible to win back an hour later.

They arrive out of hours. Leaks and breakdowns don’t wait for the working day. The 9pm “water’s coming through the ceiling” call is the highest-value call of your week and the one you’re least able to take.

Does the caller ring back?

This is the question the whole decision turns on, so it’s worth being straight about the evidence rather than reaching for the usual statistics.

BT’s research into UK businesses found that customers try a company twice at most before going elsewhere, and about a fifth said they would call just once. That work is from 2014 and covers firms of 20–249 staff rather than sole traders, so read it as indicative.

The callback is weaker still. Hiya’s 2024 analysis of 221 billion calls found 46% of calls from unidentified numbers go unanswered even when a legitimate business is calling, and 60% of consumers never return a missed call from a number they don’t recognise. Ringing back at 8pm from a mobile the customer has never seen is exactly that call.

None of which means callbacks never land. It means you shouldn’t plan around them.

A note on the numbers you’ll see elsewhere

If you research this you’ll meet the same figures repeatedly: 62% of calls unanswered, 85% of callers won’t leave a voicemail, £24,000 a year lost. We went looking for the primary sources and wrote up what we found. Briefly: the 62% traces to a 2016 study of 85 US businesses by a marketing agency, and the other two trace to nothing at all.

We’ve stopped quoting them, including in earlier versions of this post. Your own call log is better evidence than any of them: missed calls a week × your close rate × average job value × 52.

What callers actually ask a plumber

A plumbing call has a shape, and whoever picks up has to handle it:

• “Is this an emergency, or can it wait?” (the triage question everything else hangs on)
• “Do you cover my postcode?”
• “Roughly what would it cost to sort a dripping tap, swap a radiator valve, power-flush the system?”
• “Are you Gas Safe registered?”
• “How soon can someone come out?”

Notice that four of the five need information only you have: your area, your rates, your registration, your diary. This is why “someone answered” and “the call was resolved” are different outcomes. A generic assistant, or a human service working from a script that doesn’t include your prices, can be perfectly polite and still leave the caller waiting on you.

What are the options?

What maeby does on a plumbing call

Now the product bit, clearly labelled so you can weigh it against the row above.

maeby is a 24/7 AI voice agent built for UK trades. It answers in a natural British voice, with the greeting you wrote, spoken word for word, so what the caller hears first is your decision, not the model’s.

It triages against your definition of urgent. You decide what counts. Genuine emergencies transfer straight to your mobile; a dripping tap gets a slot in the diary rather than a 9pm phone call.

It quotes your actual rates. Call-out charge, hourly rate, out-of-hours premium, and what’s included. It works from your figures, consistently, rather than from your memory at the end of a ten-hour day.

It captures the job properly. Who called, their number, their postcode, what’s wrong, and how urgent, structured rather than scribbled on the back of a job sheet.

It books the work. For non-emergencies it offers real availability from your calendar and confirms the appointment on the call, so you turn up to a full diary instead of a list of people to ring back.

It writes the call up. Transcript, summary, and outcome land in the dashboard and your CRM while you’re still on the job.

There’s nothing to install, and you keep your number: you forward the existing one, so the number on the van and in your Google listing doesn’t change. There’s more detail on the trades and home services page, and the plans are on pricing.

“Won’t my customers know it’s a robot?”

They will if you say so in the greeting, and we think you should. The greeting we start you with does exactly that, and it’s spoken word for word, so this is a line you write once and then know the wording of, on every call, rather than something the model improvises.

Saying it up front is also the cheaper end of the trade. The caller who is told plainly gets on with describing the leak. The one who works it out four minutes in, after explaining the whole job, rings off annoyed and tells people.

The honest comparison was never maeby against you at your best; it’s a disclosed AI that quotes your rate and books the slot, against a phone ringing out to nobody. Callers who get a fast answer and an appointment tend not to mind how it was delivered. Callers who get six rings and a beep mind quite a lot, and they express it by calling someone else.

Working out whether it’s worth it

Don’t take the industry’s £24,000. Take your own three numbers (missed calls a week, your close rate on the calls you do answer, and your average job) and multiply. Then compare that against a month of whichever option above you’re considering.

For most one- and two-van firms the recovered work only has to amount to a job or two a month before the arithmetic stops being close. But it’s your call log that settles it, not ours.

If you want to hear what your callers would get instead of voicemail, you can set up an agent and test it in your browser before it ever touches a real number, no card needed.