A sprinkler system does not send a warning before the first hard freeze. It just splits a backflow preventer or a lateral line, quietly, on a night in late October. This fall campaign gets every irrigation customer winterized before that night: a deadline-driven text sequence, routes batched by neighborhood, and a spring startup pre-booked before your crew leaves the yard.
System 7 from the Leveraged Owner Starter Pack
The call comes in April, and it is always the same call. The homeowner turned the water back on, a zone will not pressurize, there is water bubbling up by the sidewalk, and somehow this is an emergency you are expected to fix before the weekend guests arrive. The damage happened five months earlier, on the first night the temperature sat in the low twenties long enough to freeze water trapped in the lines. A forty-minute blowout in October would have prevented all of it. The customer never booked one, because nobody asked them at the right moment, in the right way.
Blowout season runs on the same calendar discipline as appointment confirmation texts: the right message, to the right customer, early enough to act on — except here the deadline is not set by your office. It is set by the weather, and the weather does not reschedule. That makes this the cleanest seasonal campaign in the service trades. The need is real, the window is short, the work is fast, and every customer on your list needs it every single year.
The campaign is only as good as the list it sends to. Build it once, in September, from three sources:
Keep the list in your FSM (field service management software — the dispatch and job system) with the neighborhood or subdivision as a searchable field. Route density is the whole profit story in blowout work: eight systems on one street is a morning, while eight systems scattered across the county is a day of driving with the compressor trailer. The list structure decides which one you get.
Do not anchor this campaign to a calendar date. Anchor it to the forecast. The first touch goes out when the ten-day outlook shows the season's first likely hard freeze — a night forecast in the mid-twenties or lower in most northern and transition-zone markets. Your customers check the same forecast, so the message lands as news, not advertising.
Touch 1 — the deadline text (about 10 days before the first hard freeze)
Hi [First Name], [Business Name] here — the first hard freeze is forecast around [Freeze Date], and sprinkler lines still holding water are the ones that split. We are running blowouts in [Neighborhood] on [Route Day 1] and [Route Day 2]. Want your system on one of those routes? Reply with the day that suits and we will handle the rest. Reply STOP to opt out.
Touch 2 — the route-filling text (4–5 days out, unbooked only)
Hi [First Name], quick follow-up: the [Neighborhood] blowout route is filling — we have [Remaining Slots] openings left on [Route Day]. A standard blowout takes about 40 minutes and covers the backflow, all zones, and the controller set to winter mode. After this route closes, the next opening is [Later Date], which may be after the freeze.
Touch 3 — the last-call text (the day before the route runs)
Hi [First Name], last note before tomorrow's route: if your system is not winterized yet, I can add you to the [Neighborhood] run if you reply by this evening. If another company is handling it, no problem at all — just tell me and I will close the reminder for this year.
Three rules keep the sequence honest. Send touch 2 only to the unbooked — a customer who already has a slot and gets a scarcity text learns to distrust the next one. Use real slot counts, counted off the actual board, never invented pressure. And when a customer replies that a competitor did the work, close the file politely and record it; that record is next September's list hygiene, done for free.
The blowout itself is a defined job with a standard operating procedure (SOP — a written step-by-step procedure your techs follow the same way every time): shut off the irrigation supply, drain what drains, blow out each zone in sequence at the pressure your equipment and the pipe spec allow, open the backflow test cocks as your local practice requires, set the controller to off or rain mode, and tag the shutoff with the date. What surrounds those forty minutes is where the campaign pays twice:
Spring startup pre-book text (sent the evening of the blowout)
Hi [First Name], your system at [Address] is winterized and set for the season. I have held a spring startup for the week of [Startup Week] and noted two items to check then: [Repair Note 1] and [Repair Note 2]. We will confirm the exact day the week before. Nothing to do now — you are on the list.
That one text converts a seasonal chore into a recurring relationship. The customer who is pre-booked does not shop startups in April, does not take the neighbor's guy's card, and does not call you for the first time with water already bubbling by the sidewalk.
Business texts require A2P 10DLC registration (A2P is application-to-person messaging; 10DLC is the carrier registration for business texting numbers — typically a 1–7 day approval and about $15–$20 one-time) before you send. Include opt-out language in the first text, honor every opt-out immediately, and respect TCPA quiet hours (TCPA is the federal law governing calls and texts to consumers): no marketing texts before 8am or after 9pm in the recipient's local time. A freeze warning does not change the quiet-hours rule; send the last-call text in the evening, before the cutoff, like everyone else on the route. This is general information, not legal advice.
The estimate-side companion is the irrigation system estimate follow-up, which covers the spring startup hook for new systems. For another deadline-driven route campaign, see backflow testing reminders, and for the fall text that protects the rest of the house, seasonal equipment cover reminders.
The full setup SOP, all four copy-paste scripts (including the owner notification), the "Your Numbers" missed-call worksheet, and the step-by-step setup guide — free, no catch. Fix your missed calls this week.
Free. The full 8-system Starter Pack is $27 if you want everything else.
This post is System 7 from the Leveraged Owner Starter Pack — the done-for-you version with the full multi-step SOP, every script, the worksheets, and screen-by-screen setup instructions for all 8 systems. The reactivation and recurring-revenue chapter includes the seasonal campaign calendar with the forecast-trigger worksheet, route-batching sheet, and pre-book scripts pre-built.
Stats sourced as labeled: no third-party statistics are cited in this post; freeze timing is described as forecast-based and local, visit steps are described as following your equipment and pipe specifications and local practice, and compliance points are stated as general information, not legal advice.
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