An AI receptionist for heating engineers.
Last updated 12 June 2026.
Smooth Voice builds AI receptionists for UK heating and gas engineers. The agent answers every call 24/7 in a natural voice, tells a breakdown from a boiler service, books jobs and landlord certificates straight into your calendar, and hands anything unusual to a human with a full transcript. It is built around your business — your services, your prices, your call out rules — and goes live within 30 days.
Heating is the trade where missed calls cost the most: demand arrives in surges, the work is urgent, and the customer rings the next number the moment voicemail picks up. This page covers what the agent actually does in the situations heating engineers recognise.
Where it earns its keep
The 7am cold snap
The first frost of the year lands and every boiler that limped through summer dies the same morning. Your phone takes more calls before lunch than it normally takes in a week. The agent answers all of them — up to 10 at the same time — triages breakdown against service, captures the address and boiler type, and books the urgent ones into your day in order.
Elbow deep in a combi swap
You are mid install and cannot touch your phone for three hours. Customers who reach voicemail call the next engineer on the list. Customers who reach your agent get answered like you would answer, get booked in, and get a confirmation text — and you get the full transcript when you surface.
The 11pm no heating call
A family with a newborn and no hot water is not leaving a voicemail. The agent answers at 11pm, asks the questions you would ask, tells genuine emergencies your real call out terms, and books them for first thing — or patches the call through to you if that is how you want emergencies handled.
Landlord certificate season
A letting agent needs gas safety records for 14 properties before the end of the month. The agent takes the property list, books the visits in batches that make sense geographically, and confirms the lot back by email — a job your office manager would have lost an afternoon to.
What it will not do
It will not give gas safety advice, diagnose faults over the phone, or guess at answers it has not been given. A smell of gas call gets the official script — call the National Gas Emergency line on 0800 111 999 — and an immediate alert to you. Off script questions go to a human with a transcript. You stay the Gas Safe registered professional; the agent just makes sure you never lose the job because you could not pick up.
Is it worth it for your size of business?
Honest answer: count your missed calls in a normal week, then look at a cold week. If you are a one van outfit whose phone rings three times a day, a cheap call answering product may be all you need — our cost guide covers those options openly. If missed calls are costing you installs, or your office manager drowns every winter, run your numbers through the missed call calculator and book a demo — we will give you a real price for your call volume on the call.
Hear one answer a heating call right now
There is a live demo agent on the homepage. Call it, tell it your boiler is dead, and listen to what your customers would hear. Then book a demo and we will show you what we would build for your business.
AI receptionists for heating engineers: common questions
What does an AI receptionist actually do for a heating engineer?
It answers every call to your business number, 24 hours a day, in a natural voice most callers cannot tell from a person. It knows your services and prices because we build it around your business: it can tell a boiler service from a breakdown, take the make and model, quote your call out terms if you want it to, book the job straight into your calendar, and send the caller a confirmation. Anything unusual gets handed to you with a full transcript.
Can it handle emergency boiler breakdowns properly?
Yes, within sensible limits. It asks the triage questions you give it — no heat, no hot water, leak, smell of gas — and follows your rules for each. For a suspected gas leak it does exactly what you would do: tells the caller to call the National Gas Emergency line on 0800 111 999 immediately, then alerts you. It never gives gas safety advice itself; it routes and books.
Will it cope with the winter rush?
That is the strongest reason heating engineers use us. The agent takes up to 10 calls at once, so the cold snap morning where 30 people ring in three hours stops being lost work. Every caller gets answered on the first ring; you get a prioritised, booked diary instead of a voicemail backlog.
Does it book landlord gas safety certificates?
Yes. It handles repeat work like CP12 landlord gas safety records, annual boiler services, and service plan customers — it can take multi property bookings from letting agents and slot them into your calendar against your rules.
How much does it cost for a heating business?
Every build is custom, so we give you a real number on a demo call rather than a one size price list. For typical UK market ranges across the whole category, see our cost guide. The honest comparison point: one recovered boiler install usually covers months of the service.
What if a caller asks something it does not know?
It does not guess — ever. It tells the caller it will connect them to the team, hands over to a human with a transcript of the conversation so far, and if nobody is available it takes a detailed message and flags it as needing you. You decide in week one exactly where those lines are drawn.