AI receptionist vs answering service
AI receptionist or answering service for a plumber or electrician? How each one works, what it can't do, and how each is priced.
A plumber is under a sink with both hands on a compression fitting. The phone in the van rings, rings again, and stops. Somewhere a homeowner with water coming through the kitchen ceiling is already dialling the next number on the list.
Most trade businesses that decide to stop losing those calls end up choosing between two things. One is an answering service, where people in a call centre pick up in your firm's name. The other is an AI receptionist, where software holds the conversation. Both answer the phone. They do different jobs once they have, and they are priced in different ways. This article sets them side by side for a firm of two to twenty people that spends most of the day on site.
If you have not yet counted how many calls you actually miss, start there. The one-week missed-call audit takes a few minutes each evening and tells you whether you need either of these.
How an answering service works
You divert your number to the service when you cannot pick up, or permanently. The guide to conditional call forwarding shows how to divert only unanswered or busy calls. An operator answers with your firm's name and works from a script you agreed when you signed up. They take the caller's name, number, address and the reason for the call, and send it to you as an email or text. Some services can also book into a shared calendar, transfer urgent calls to your mobile, or follow a short decision tree you give them ("if it's a leak, call the owner").
The operator is a person. That matters when the caller is upset, elderly, hard to understand or has a question the script never thought of. A good operator calms people down and notices when a call is an emergency.
The limits come from the same place. The operator handles calls for many businesses at once and knows your firm only through the script. They usually cannot tell a caller whether you cover their postcode, whether you fit a particular brand of boiler, or when your next free morning is, unless you have written all of that down and kept it up to date. Most calls end with a message, and the real conversation still happens when you ring back that evening. Cover hours, weekend rates and what happens during busy spells all depend on the provider, so check them in the contract.
How an AI receptionist works
The receptionist is a voice agent connected to your phone line. It picks up after a set number of rings, or whenever you divert to it. It tells the caller in the first sentence that they are speaking to an AI. In the EU that is a legal requirement from 2 August 2026 under Article 50 of the AI Act, and it is good practice everywhere else. Then it asks the questions you set: what the problem is, the address, a callback number, how urgent it is.
Because it is configured for your business alone, it can answer the questions an operator usually cannot. It knows your service area, your call-out policy, which jobs you take and which you don't. If it has access to your calendar, it books a real slot, and the caller gets a text confirming it. You get a written summary of each call. It answers at 2 pm and 2 am in the same way, and several calls at once do not leave anyone waiting in a queue.
Its limits are real too. It only knows what you have told it, so a question outside that range gets a callback rather than an answer. A bad mobile line or a caller who talks over it can trip it up. And some calls should go to a person whatever happens: a complaint, a gas smell, a customer who wants a price for a job nobody has seen. A sensible set-up hands those over straight away instead of trying to handle them.
Side by side
| Answering service | AI receptionist | |
|---|---|---|
| Who picks up | A person in a shared call centre | Software set up for your firm |
| Knows your prices, area and diary | Only what is in the script | What you configure, including the live calendar |
| Typical result of a call | A message for you to call back | A booked slot or a summary with the details |
| Several calls at once | Depends on staffing at that moment | Handled in parallel |
| Upset or unusual callers | Strong | Should hand over to a person |
| Out of hours | Depends on the plan | Same as daytime |
| Has to say what it is | No | Yes, in the first sentence |
How each one is priced
There is no standard price for either, and published rates change often, so this section covers how the bill is built rather than what it comes to. Ask any provider which of these models they use before you compare figures.
Answering services usually charge in one of three ways.
- Per call. You pay a fixed amount for each call answered. Simple to understand, but every call counts, including wrong numbers and sales calls, unless the contract says otherwise.
- Per minute. You pay for the time operators spend on your calls. Short calls are cheap, long conversations with chatty customers are not.
- Monthly bundle. A flat fee covers a set number of calls or minutes, and anything above that is charged at a higher overage rate. Some providers add a set-up fee, or charge more for evenings and weekends.
AI receptionists use similar building blocks with a different mix.
- Per minute of call time. Common with self-serve voice tools, where you pay for usage and set the agent up yourself.
- Monthly flat fee. One figure per month, sometimes with a fair-use cap on minutes. This is more usual when the provider sets it up and maintains it for you.
- Set-up fee. Charged by some providers for writing the call script, connecting your calendar and testing.
The useful comparison is the cost per enquiry handled, not the headline rate. Take your count from the audit, remove the suppliers and sales calls, and work out what each model would charge for that month. Then ask what you get for the money. A message you still have to return is worth less than an appointment already in the diary, and a call answered at 9 pm on a Saturday is often worth more than one at 10 am on a Tuesday. The same logic applies to web enquiries, as the piece on replying to the Saturday evening enquiry shows.
Which one fits which firm
An answering service suits a firm whose callers often need a human: emergency work where people are frightened, an older customer base, or jobs that can't be booked without a conversation. It also suits a business that has no online calendar and does not want one.
An AI receptionist suits a firm whose missed calls fall into fixed windows, such as lunchtime and after five, and whose jobs can be booked from a short list of questions. It fits best when the diary is already digital, because booking straight into it is where most of the value comes from.
Plenty of firms end up with a mix. The receptionist takes first contact and books what it can, and urgent or awkward calls go to a person, either you or a service. If you miss only a handful of calls a week, neither may be worth it yet, and a text auto-reply with forwarding to your mobile can be enough.
Questions to ask before you sign
- What happens when a caller asks something that is not in the script or configuration?
- Can it book directly into my calendar, or does it only take messages?
- How and how quickly do I get the details of each call?
- What counts as a billable call or minute, and are wrong numbers and sales calls included?
- Where are recordings and call data stored, who processes them, and is there a data processing agreement?
- What is the notice period, and can I take my number and settings with me?
If the AI route fits your firm, the AI receptionist page shows what ours says on the phone, which calls it passes to a person, and how it books into your calendar.