Retention & Reminders for Gas Engineers
Rebooking rate is the only number in your business
You already own the best retention business on this site
A power flush is £615. A gas meter relocation, £425. An emergency gas repair, £255. A hob and oven connection, £255. An appliance service, £125.
Every other trade on this page has to invent a reason to come back. You do not. The annual service exists, the landlord check is required by law on a date, and the manufacturer’s warranty on nearly every boiler you fit depends on it happening.
Two hundred service customers at £125 is £25,000 a year that arrives without a single enquiry. Add the repairs, the parts and the replacements that base produces and it is most of a business.
Which means your marketing problem is not acquisition. It is erosion.
A base losing five per cent a year does not feel like anything. Ten households out of two hundred, spread across twelve months, each with a plausible reason — moved, sold, boiler replaced by somebody else, meant to ring back. Nobody complains and nothing appears in the accounts as a loss. But five years of that is a quarter of the base gone, replaced by whatever new work happened to come in, and the business has run very hard to stand still.
Rebooking rate is the number that makes that visible, and almost no gas engineer can tell you theirs.
What actually moves the rate
Timing the first prompt properly. Six weeks before due, not on the anniversary. Households need lead time and the ones who are prompted late book late or not at all.
Naming the last service date. A reminder that says “your boiler was last serviced on 14 October 2025” outperforms a generic one substantially, because it is plainly about them rather than a mailshot.
A second prompt, and a third. One reminder catches the organised. Two catches most people. A short note at the point of lapse catches a meaningful share of the rest, and almost nobody sends it.
The right channel for the right message. Email six weeks out, because it needs to sit in an inbox until they are ready. A single text the week before if nothing is booked, because that is when immediacy helps.
Booking next year at the visit. The highest-converting moment available and the one most often skipped. A provisional date agreed while you are standing in the house removes the entire problem.
A plan option. Some households prefer a monthly figure covering the service and a level of cover. It is not for everyone, and where it fits it converts an annual decision into no decision at all.
The ratio
Our Seen package is £29 a month — £348 a year. That is under three appliance services.
The retention arithmetic dwarfs it. Moving rebooking from seventy-five per cent to eighty-five across two hundred customers is twenty additional services — £2,500 a year in service revenue, before the repairs and replacements those households produce. And it compounds, because a customer retained this year is in the base to be retained again next year.
What we’d actually set up
Rebooking rate measured, monthly, split between domestic and landlord. Nothing improves until it is a number.
A three-stage reminder sequence at six weeks, two weeks and lapse, from a sending address that does nothing else.
Landlord certificate scheduling against real expiry dates, since those carry a legal deadline and cannot slip.
Next-year booking at the visit, built into how the job is closed.
A lapse alert at fifteen months, so a customer who missed is caught while it is still easy.
Churn reporting, so the base is something you watch rather than assume.
What good looks like at twelve months
- A rebooking rate you can state, by month, without guessing
- Reminders going out at six weeks rather than on the day
- Landlord certificates renewing with nobody chasing
- A share of customers leaving each visit with next year’s date
- Lapses caught at fifteen months rather than discovered at three years
The mistakes we see most
Sending one reminder. It catches the organised and loses everybody else.
Reminding on the anniversary. Too late to plan around, which is exactly when people defer.
Mixing reminders with marketing. It puts the most valuable email you send at risk of being filtered.
Not measuring. A base eroding quietly is the most expensive thing in this trade and the easiest to miss.
The first ninety days
Weeks 1–4. Rebooking measured and the base audited — who is due, who has lapsed, who has never been offered a service at all.
Weeks 5–8. The three-stage sequence live, with last-service dates included and the sending address kept clean.
Weeks 9–12. Next-year booking built into the visit, plus the fifteen-month lapse alert.
At ninety days the measure is the rebooking rate on services due in that window against the same months last year. It is the only number this service should be judged on.
Where this lands in Gaffer
Every completed service schedules next year’s reminder, so the cycle runs from the job record rather than from a list somebody maintains.
Landlord certificates carry a hard expiry with prompts before the date, which is what makes the legally-driven half of the base reliable.
And churn risk flags the customers who did not rebook, which turns erosion from something you discover into something you are told about.
What the base is actually worth, and why that matters
Most engineers think about the annual service as £125 of income. It is worth considerably more than that, and understanding the real figure changes how much effort the retention work deserves.
Take a single retained service customer over ten years. Ten services at £125 is £1,250. Across a decade a fair proportion of those households will need at least one significant repair — a diverter valve, a fan, a heat exchanger, a pump — which is a few hundred pounds a time. Somewhere in that period a meaningful share will replace the boiler entirely, at around £2,000 to £3,000, and they will use the engineer who has been coming every year rather than searching. A share will have you fit a hob, relocate a meter, add controls or flush the system.
Realistically that is somewhere between £3,000 and £5,000 of lifetime value per retained household, against £125 a year of visible service income.
Which reframes the arithmetic entirely. Losing ten customers a year is not £1,250 of lost service revenue. It is thirty to fifty thousand pounds of lifetime value walking out over a decade, and it is being lost to reminders that went out too late and were sent once.
That is why rebooking rate deserves to be the number the business is run on, and why a fortnight spent getting the reminder sequence right is one of the better investments available to a gas engineer.
Questions gas engineers ask
What rebooking rate should I expect? Above eighty per cent is a healthy domestic base. Below seventy and the business is refilling a leaking bucket.
Should I offer a monthly plan? Where it suits your customers it removes the annual decision entirely. It is not necessary to make retention work.
How many reminders is too many? Three across a cycle is right. More than that and it starts reading as pressure.
What about customers who have moved? The property still has a boiler and the new owner needs an engineer. It is worth writing to the address.
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