Guide
Not a top-ten list. A scoring sheet you can run on your own shop, applied to a typical plumbing business so you can see why the popular starting point is usually the wrong one.
Every software vendor wants to be your first automation. That's not the same as being the right one. Some tools save you ten minutes a week and cost £150/month. Others recover a job you'd otherwise have lost entirely. Without a way to compare them, most plumbing businesses start with whatever they saw advertised last, usually scheduling software, and it takes six months to pay for itself.
You need one number per candidate, not a gut feeling. Here's the formula.
Score = (minutes saved per month ÷ 60 × your hourly rate) + revenue recovered per month − monthly setup/running cost.
Three inputs, all knowable:
Setup cost includes the software subscription, plus a rough figure for the hours it takes you to set it up and learn it, converted at your hourly rate too.
Rank every candidate by score. Highest first. That's your automation order, not whatever's trending on a plumbing Facebook group.
Say the owner's hourly rate works out at £45. The business misses roughly 12 calls a month (jobs, evenings, on the tools), average job value £280, and maybe 1 in 3 missed callers would have booked if someone had replied fast. Quotes go out but half never get a follow-up call, and of those, maybe 1 in 5 would have converted with a nudge. Invoices average 38 days to collect. Scheduling is done on a paper diary and a group chat, taking maybe 90 minutes a week to sort out.
| Candidate | Minutes saved/month | Revenue recovered/month | Setup cost/month | Score |
|---|---|---|---|---|
| Missed-call text-back | 60 | £1,120 | £40 | £1,125 |
| Quote follow-up sequence | 120 | £420 | £60 | £450 |
| Review requests | 90 | £150* | £30 | £188 |
| Invoice chasing | 90 | £200** | £25 | £243 |
| Scheduling software | 360 | £0 | £120 | £150 |
*Reviews don't recover money directly this month, but a steady flow of reviews lifts booking rate over time; £150 is a conservative monthly estimate of that effect.
**Modelled as the cash-flow value of collecting invoices a fortnight sooner on £15,000/month turnover, not extra revenue.
Missed-call text-back wins by a wide margin, not because it saves the most time (it doesn't) but because every missed call is a job at risk of walking straight to the next plumber in the search results. Run your own numbers through the missed-call revenue calculator before you commit to anything, because the 1-in-3 conversion assumption above is the single biggest lever in the whole table.
When you can't answer, the caller gets an instant text: "Sorry we missed you, we're on a job — what's the issue and where are you based, we'll call you back within the hour." It costs almost nothing to run, takes an afternoon to set up, and directly plugs the leak where most lost revenue actually happens: someone else picking up on the second ring.
Typical payback: 2–4 weeks. One recovered £280 job in month one often covers a year of the software.
A quote sitting in someone's inbox with no follow-up is a coin flip you're not even flipping. An automated sequence — a text two days after the quote, a call prompt on day five, a discount nudge on day ten if that's your style — turns "maybe" into a yes or a clean no. It needs slightly more setup than text-back because you're writing a short sequence, not one message.
Typical payback: 4–8 weeks.
Automated review requests sent right after job completion (while the customer's still happy, not three weeks later when you remember) compound over months. They don't recover a specific job today, but they lift your ranking and your conversion rate on every enquiry that comes after. Slower money, but real money.
Typical payback: 2–4 months.
Automated reminders at day 7, 14 and 21 past due date save awkward phone calls and pull cash forward. This doesn't create new revenue, it accelerates cash you've already earned, which matters most if you're ever tight on cash flow between jobs. Worth doing, but it's a cash-timing fix, not a growth lever, so it sits below the revenue-recovery items.
Typical payback: 1–3 months, depending on how bad your current collection habits are.
This is where most businesses start, and it's usually the wrong order. Scheduling tools save admin time, sometimes a lot of it, but they don't recover lost revenue and they carry real setup cost: migrating jobs, training staff, fixing the inevitable double-bookings in month one. If your diary genuinely can't cope with two vans, it's worth doing eventually. But rank it against the others honestly and it usually comes last, not first.
Typical payback: often 6+ months, sometimes never, if the time saved doesn't convert into billable hours.
If you want a starting template for tracking this across missed calls, quotes and invoices in one place, the small business operations kit has the spreadsheets set up for exactly this comparison.
Automate the leak before you automate the admin. Missing calls and dead quotes lose you jobs that are already yours to win. Scheduling software just makes the jobs you're already doing slightly easier to manage. Fix the leak first, always.
The Small Business Operations Kit ($19) turns guides like this one into fill-in-once worksheets: rate card, quoting sheet, job costing, payment terms and follow-up templates.