Most plumbers eventually need both - but the order you buy them in changes how much you spend, and how much actually gets done. Here's the honest comparison.
If you run a 1-to-5 person Aussie plumbing business, sooner or later you hit the same wall.
The jobs are there. The phone is ringing. But the admin pile, the quote follow-ups, the unpaid invoices, the review requests you keep meaning to send - none of it is happening on time, because you’re either on the tools or you’re asleep.
At that point, two options usually come up.
Option A: Hire a virtual assistant. Pay them by the hour. Let them work through the pile.
Option B: Buy a system. Templates, prompts, automation. Let the work run itself.
Both are valid. Most plumbers we audit eventually use both. But the order matters, the cost difference is significant, and almost nobody runs the numbers properly before they commit.
Here’s the honest comparison.
What a great virtual assistant does well
A good VA is a person. That sounds obvious. It matters because there are parts of running a plumbing business that genuinely need a human brain on the other side of the work.
- Complex customer emails. “We’ve had a leak twice in three weeks, I’m not happy” - that’s not a job for a template. That’s a job for a thinking person who can read the situation and write a real reply.
- One-off setup tasks. Migrating from a paper-based booking system to ServiceM8. Cleaning up a messy Xero account. Setting up a Google Business Profile properly. One-off work, high judgement, hard to automate.
- Phone coverage. A real person picking up a real call during business hours. No system replaces that yet.
- Anything new or weird. A council asking for documentation on a job from 2019. A supplier dispute. A bookkeeper needing 30 PDFs reformatted. The unpredictable work.
The cost in Australia, fair-market: roughly $35 to $55 an hour for a quality AU-based VA. From around 2 hours a week up. That’s $280 to $440 a month minimum, $3,400 to $5,300 a year if you stay at the low end. More if you grow.
That’s not a criticism. That’s just the price. A great VA is worth every dollar if you’ve got the right work for them to do.
What a great system does well
A system is software plus instructions. It doesn’t think. It doesn’t have judgement. But for the work that repeats the same way every single time, it doesn’t need to.
PlumberText is the simplest version: 50 SMS templates plus an AI dispatcher prompt plus a 7-day quote-to-cash playbook. Seven dollars, once.
What it actually handles:
- Quote follow-ups on a timer. Quote sent. 48 hours later, follow-up SMS. 5 days later, second follow-up. 10 days later, a “are you still interested?” check-in. Same wording every time. Sent the same way every time.
- Invoice reminders. Job done. 7 days overdue, polite reminder. 14 days overdue, firmer reminder. Same script, sent automatically through your existing tools (Xero handles this natively, by the way).
- Review requests. Job complete, payment received, 24 hours later an SMS asking for a Google review. The single highest-ROI automation in a plumbing business.
- After-hours auto-replies. Missed call at 9pm Tuesday. Automated SMS within 60 seconds saying “got your call, will be in touch first thing tomorrow”. You’re first in line by 7am.
The cost: $7 once for PlumberText. Maybe another $0 to $30 a month if you’re already paying for ServiceM8 / Tradify / Make or Zapier. The system runs whether you’re awake, asleep, on a job, or on holiday.
The hidden cost comparison
If you hire a VA to handle the four things above (follow-ups, reminders, reviews, after-hours replies), the rough maths looks like this:
| Task | Time per week | Cost per year @ $45/hr |
|---|---|---|
| Quote follow-ups (10 quotes/week, 2 follow-ups each) | 1 hour | ~$2,340 |
| Invoice reminders (chasing 5 overdue/month) | 30 minutes | ~$1,170 |
| Review requests (sending after each job) | 30 minutes | ~$1,170 |
| After-hours response (replying to enquiries the next morning) | 1 hour | ~$2,340 |
| Total | 3 hours/week | ~$7,020/year |
That’s $7,020 a year, every year, to do work a system handles for $7 once.
And it’s not even an unfair comparison, because the VA is genuinely doing the work - they have to type the messages, they have to remember the timing, they have to make decisions about wording. A system doesn’t.
Where they overlap (and where they really don’t)
The bit most plumbers miss: a VA and a system aren’t competing for the same work.
A system handles the repetitive, time-stamped, template-able stuff. It’s terrible at judgement. Awful at conversation. Useless at anything novel.
A VA handles the judgement-heavy, unpredictable, person-required stuff. They’re slow and expensive at repetitive work, because you’re paying a human to do something a machine could do for free.
The mistake is hiring a VA to do the system work. That’s where the money goes sideways. You’re paying $45 an hour for the VA to copy and paste templates - work the templates could send themselves.
The honest answer: build the system first, hire the VA second
Here’s what we tell every plumber we audit:
- Spend $7 on PlumberText. Use it tonight. See if the templates land. See if the AI Dispatcher writes in a voice you’d actually send.
- Switch on the free automation already in your existing tools. ServiceM8 has automated reminders. Xero has invoice chasers. Most plumbers never enable either.
- Add a Make or Zapier scenario for the gaps between tools - missed-call to SMS, quote-sent to follow-up timer, job-complete to review request.
- Then, if you still have a pile, hire a VA for the work that actually needs a person.
Done in this order, you’ll need maybe 1 hour of VA time a week instead of 4. Same business outcome, $4,000 to $5,000 a year saved, and the system keeps running even if the VA leaves.
Where to start
If you want a quick map of where your plumbing business is leaking time - specifically which parts a $7 vault can fix, which parts need a system build, and which parts genuinely need a person - book a free 30-minute audit.
Thirty minutes. Plain English. No pitch deck. We tell you straight whether to start with the vault, build the bigger system, or just hire a VA.
If we can’t find a fix worth shipping in the first ten minutes, we’ll tell you and end the call.
