How To Grow Your Car Aircon Service Business

A practical guide to staying top-of-mind and driving repeat bookings

Car air conditioning isn’t something customers think about often. In fact, most people only service or regas their AC when it becomes noticeably less coo. That means the biggest challenge isn’t convincing them you’re the best choice today—it’s making sure they remember you when the time comes.

A simple, highly effective strategy:
👉 Automatically remind past customers when their next AC service is due.
By setting up scheduled reminders at the 2, 3, 4, and 5-year marks, you dramatically increase repeat business without extra manual work.

This guide shows you exactly how to implement this using MailerLite.

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Why Reminders Work

1. AC servicing has a long renewal cycle

Most customers forget when they last had their AC serviced. Even if you provide a great experience, by the time 2–5 years have passed, they won’t remember your business name unless you stay visible.

2. Automated reminders = effortless repeat revenue

Set it once → MailerLite keeps doing the follow-up for you forever.

This creates consistent yearly revenue from your existing customer base.

3. You can personalise reminders

Every reminder can:

• Mention their vehicle type
• Include the month they last serviced
• Provide a discount or seasonal offer
• Encourage early bookings before summer

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What You Need Before Setting Automations

1. A MailerLite account (its free for up to 500 subscribers!)
2. A list of past customers
3. Each customer must have a “Last AC Service Date” custom field in MailerLite (this is covered in more detail below)
4. A basic reminder email template – I have created one for you, just scroll to the bottom to see it.

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Step-by-Step: Creating a Multi-Year Reminder Automation in MailerLite

This workflow assumes you want one automation that sends reminders at the 2, 3, 4, and 5-year marks after their most recent service.

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Step 1 — Create a custom field for the service date

1. Go to Subscribers
2. Click Fields
3. Add a new field called:
   • service_date or last_service_date
   • Field type: Date

This is the key that triggers everything.

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Step 2 — Import or update customer records

1. Upload your customer list (Subscribers->Add Subscriber)
2. Map their service date to the new field
3. Ensure your CSV date format matches MailerLite (YYYY-MM-DD recommended)

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Step 3 — Create a new Automation

1. Go to Automation in the left menu
2. Click Create workflow
3. Name it:
   “AC Service Long-Term Reminder Automation”

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Step 4 — Choose the trigger

1. Select Trigger: When date occurs
2. Choose your field: service_date
3. Set to annual recurrence?
   → NO — because you want specific year intervals, not yearly.
4. Choose specific date
   → But leave it as “when date occurs” for now; we will add delays next.

MailerLite fires the workflow the moment the date matches.
So if someone serviced today, the workflow starts today.

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Step 5 — Add the 2-year reminder

Inside your new workflow:

1. Click + Add
2. Choose Delay
3. Set delay to: 730 days (2 years)

Then:

4. Add Email
5. Choose your email template
6. Subject line example:
   “Time for Your Next Car AC Check? It’s Been 2 Years 👀”

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Step 6 — Add the 3-year reminder

1. Add another Delay
2. Set delay: 365 days (total now 3 years)
3. Add Email

Subject example:
“3 Years Since Your Last AC Service – Keep It Running Cold ❄️”

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Step 7 — Add the 4-year reminder

1. Add Delay → 365 days
2. Add an Email

Subject example:
“Your Car AC Might Be Due for a Check — 4 Years Already!”

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Step 8 — Add the 5-year reminder

1. Add Delay → 365 days
2. Add Email

Subject example:
“5 Years Since Your AC Service – Book Your Regas Before Summer!”

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Step 9 — Turn on the automation

1. Review the workflow
2. Switch the automation from Draft to Active

That’s it — you now have a multi-year revenue engine running in the background.

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Bonus: Email Template Ideas

You can reuse the same structure each year with slight wording changes.

Simple Reminder Template

Subject: Is Your Car Still Cooling Well?
Body:
Hi {{name}},
It’s been {{years}} since your last AC service. Most systems need attention every 2–5 years to stay efficient, avoid leaks, and prevent costly repairs.

Click below to book your quick 30-minute AC check & regas.

→ Book Now

If you’ve serviced recently, just reply “Done” and we’ll update your record.

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Final Tips to Maximise Repeat Business

• Add SMS reminders for customers who prefer text
• Run summer-preparation specials
• Offer discounted regas when combined with vehicle servicing
• Add a fridge magnet with the booking URL
• Make sure your Google Business reviews stay fresh