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I Missed 5 Emergency Calls a Week. Then I Tried AI.

Gary Mitchell
2026-06-02
10 min read

Self-employed plumber from Clapham shares honest 4-week diary using AI call answering. Real numbers. No BS. £6,800 in recovered jobs.

5 emergency calls missed. Every single week. For 3 months straight. That is 60 emergency callouts I never even knew about because I was under someone else's sink. At £350 average per emergency job, that is £21,000 I literally flushed down the toilet. While I was working. I am Gary. I am a plumber from Clapham. And this is what happened when I let a robot answer my phone.

How many emergency calls do plumbers actually miss?

I counted. Properly. For 3 weeks before I did anything about it. Week 1: 4 missed on Monday, 6 on Tuesday, 5 on Wednesday, 7 on Thursday, 3 on Friday. That's 25 calls in 5 days. Week 2: 27 missed. Week 3: 23 missed. Average: 5 per day. And I'm not talking about PPI calls or someone selling solar panels. I mean real jobs. Burst pipes. Boiler failures. Leaks through ceilings. People with no hot water and kids in the house. The worst one? Tuesday, 2:47pm. I was under a sink in Brixton fitting a new waste pipe. My phone rang twice. I saw it. Couldn't answer. Hands covered in muck, water everywhere, customer's kitchen floor already ruined. I checked the missed call at 4pm. Rang back. They'd already got someone else. £420 emergency callout. Gone. And that happened every single week. Not once. Not sometimes. Every week. I'm a one-man band. White Transit van. 12 years plumbing. Emergency plumbing, boiler repairs, bathroom fittings. No apprentice. No wife answering the phone. Just me and my tools. When I'm under a sink, up a ladder, or in a crawl space, my phone is in my pocket. Vibrating. Dying.

What happens when AI answers your plumbing emergency call?

Mate of mine put me onto whoza.ai. Dave the sparky from Lewisham. Said this thing called Katie was answering his calls and sending him WhatsApp messages with all the details. I thought it was rubbish. AI answering phones? Sounds like one of those apps that promises everything and delivers nothing. Like those chatbots on websites that just send you round in circles. But Dave showed me his phone. WhatsApp message popped up: "New Enquiry — Katie. Burst pipe. 3-bed terrace in Clapham. Ground floor flooding. Elderly resident. Needs emergency callout. £350-500 job." All that from a 2-minute phone call. And Katie — the AI — sounded proper. Not robotic. Not like those phone menus that make you press 1 for this and 2 for that. Sounded like a real receptionist. I signed up for the 7-day free trial. No credit card. No contract. Thought I'd test it and cancel if it was rubbish. Nothing to lose. Day 1: Katie answered 3 calls I missed. One was a boiler failure in Streatham. £280 job. I called back during my tea break, booked it for the next morning. Paid for the whole month before I even finished my brew.

How much money did I recover in 4 weeks?

I kept a diary. Old school. Notebook in the van. Every WhatsApp message, every job I booked, every quid I made. Here's the raw numbers:
Week 118 calls answered by AI. 4 jobs captured. £1,400 recovered. First week. Still sceptical. Could not believe the WhatsApp messages coming in.
Week 222 calls answered. 5 jobs captured. £1,800 recovered. Started trusting it. Stopped checking my missed call log obsessively.
Week 325 calls answered. 6 jobs captured. £2,200 recovered. Captured a £5,000 bathroom fitting enquiry while I was fixing a boiler in Brixton.
Week 420 calls answered. 4 jobs captured. £1,400 recovered. Quieter week but still 4 jobs I would have missed.

£6,800 recovered in 4 weeks. Cost: £59 for one month. Net gain: £6,741. Annual projection: £81,000+ in recovered revenue for £708 in AI costs. That is not marketing. That is my actual van diary.

What does the WhatsApp message actually look like?

I get a WhatsApp within 3 seconds of the call ending. Every single time. Not exaggerating. 3 seconds. It looks like this: "New Enquiry — Katie 👤 Name: Margaret O'Connor 📞 Phone: 07XXX XXXXXX 📍 Postcode: SW4 9BX 🔧 Job: Burst pipe under kitchen sink. Water leaking through to downstairs flat. ⚡ Urgency: Emergency — needs today 💰 Estimated Value: £350-500 Tap to action: ✅ Accept 📞 Call Back ❌ Decline" I tap "Accept" and it goes in my calendar. Tap "Call Back" and it dials her number. Tap "Decline" and Katie sends a polite text saying I'm fully booked. The customer gets a follow-up text either way. Professional. No ghosting. No "sorry I missed your call" voicemails at 9pm when I'm knackered and just want my dinner. Here's the thing that sold me. That £5,000 bathroom fitting job in Week 3? I was in Brixton, 40 minutes from Clapham, head down in a boiler cupboard. Phone never rang in my pocket. Never even knew about the call until I checked WhatsApp at my break. Enquiry captured. Customer happy. Quote booked for Saturday. Without me doing anything.

What does Katie NOT do well?

I'm not here to sell you rubbish. Here's what's not perfect. Four things. Same as Dave told me. Complex quotes If someone wants a full bathroom refit quote over the phone, Katie collects the details but cannot give prices. She sends me the spec and I call back with the quote. Fair enough — I wouldn't quote a £5,000 job blind either. She captures the enquiry. I close the deal. That's the split. Very strong accents Had one customer from Glasgow. Thick accent. Katie got his postcode slightly wrong and his surname was a bit off. I called him back, sorted it in 30 seconds. Fine for 95% of callers. But very strong regional accents can trip it up occasionally. Chatty customers Some people want to tell you their whole plumbing history. The 1970s boiler, the cowboy who botched the last job, the neighbour's recommendation. Katie keeps it brief and professional. Gets the info, moves it on. Some customers might find that a bit abrupt. Most just want their leak fixed. Personal calls Your mum calls. Your mate calls about the football. Katie treats them like customers. Sends me a WhatsApp: "New enquiry — Jennifer Mitchell, asking if you're coming for Sunday roast." Hilarious. But slightly weird. At least I don't miss my mum's calls anymore.

Is it worth £59 a month for a plumber?

Do the maths with me. I'll use my actual numbers. £59 per month. That's £1.95 per day. Less than a coffee from the van. I was missing 5 emergency calls per week. At £350 average per emergency job. Plus bathroom fittings, boiler repairs, general plumbing. In 4 weeks I captured 19 jobs I would have missed. Total recovered: £6,800. Cost: £59. Net gain: £6,741. One recovered call on Day 1 paid for the entire year. Not the month. The entire year. I made that back before I finished my lunch. But it's not just the money. It's the mental load. I used to finish a job at 6pm, check my phone, and feel sick. 8, 9, 10 missed calls. Some with voicemail. Most without. I'd spend my evening ringing round, apologising, hoping they'd still want me. Now I check WhatsApp at my break, see everything captured properly, and call back when I'm ready. No more 6pm panic. No more Sunday night dread. £59 a month for peace of mind and £6,800 in recovered jobs? That's not a decision. That's a no-brainer.

Who is this for? Who is it NOT for?

I'll be direct. No fluff. This is for you if: - You're a plumber, gas engineer, or heating specialist missing calls while you're on jobs - You get emergency callouts you literally cannot afford to miss - You work alone — no apprentice, no partner answering the phone - You live on WhatsApp anyway (who doesn't?) - You hate voicemail and never check it - You want professional follow-up without doing it yourself This is NOT for you if: - You already have a full-time receptionist who answers every call - You only get 1-2 calls per week (probably not worth it, fair enough) - You want AI to give detailed plumbing quotes over the phone (it can't — collects info, you quote) - You hate technology and won't check WhatsApp (you need to check the messages, mate) - You're a big firm with 10 vans and a call centre already Honestly? If you're a self-employed plumber, sparky, gas engineer, roofer, or builder working on your own and missing calls every day because you're grafting — this is a game changer.
TL;DR: I am Gary, a plumber from Clapham. I used to miss 5 emergency calls per week because I was under sinks fixing pipes. In 4 weeks using whoza.ai, I captured 19 jobs I would have missed, recovering £6,800 in revenue. It cost me £59 for the month. Katie the AI answers every call, sends the details to my WhatsApp in 3 seconds, and I call back when I'm free. If you're a plumber who misses calls while you're working, just try the 7-day free trial. No card needed. You'll know by Day 3 if it works for you.
If you're a plumber, sparky, gas engineer, roofer, or builder — and you're sick of missing calls while you're on jobs — just try the free week. No card. No commitment. Count how many jobs you capture. Then decide. [Start your free trial →](/)
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Frequently Asked Questions

How much does an AI receptionist cost for a plumber?

Whoza.ai costs £59 per month. That is less than one emergency callout. Most plumbers lose 3-5 calls per day. At £350 average per emergency job, one recovered call per month pays for the entire year. The 7-day free trial lets you test it with zero risk.

Can AI really understand emergency plumbing calls?

Yes. Katie asks the right questions: what the problem is, where the property is, how urgent it is, and contact details. She sends everything to your WhatsApp within 3 seconds. For genuine emergencies she can patch the call through to you immediately.

Do customers know they are talking to AI?

Most do not realise. Katie sounds like a real receptionist. The few who ask get told honestly. Not a single customer of mine has complained. Most just want their leak fixed or their boiler working. They do not care who answers the phone first.

What happens to emergency calls with AI answering?

AI answers immediately, asks safety questions, determines urgency, and sends details to your WhatsApp within 3 seconds. For genuine emergencies like burst pipes or no heating with elderly residents, it can patch through to you directly. You never miss an emergency.

Is a 7-day free trial actually free?

Yes. No credit card. No contract. Full access for 7 days. If you do not like it, walk away. Nothing to cancel. I signed up because I had nothing to lose. Best business decision I made this year. Captured 4 jobs in my first week alone.

I Missed 5 Emergency Calls a Week. Then I Tried AI. | whoza.ai Blog