There is one lead source that costs almost nothing, is already paid for, and sits untouched in most plumbing and HVAC companies. It is your database: past customers, estimates that never closed, prospects who called once and disappeared, names collected at a home show three years ago.
Every one of those records represents money you already spent to acquire someone. Ignoring them is the most expensive habit in home services, and fixing it is usually a two week project.
What Is In This Article
What One Send Produced
72 Degrees Plumbing and HVAC had roughly 5,000 records scattered across their CRM, their billing and dispatch platform and a few spreadsheets. We consolidated them and sent one seasonal offer.
| Metric | Result |
|---|---|
| Contacts in the consolidated database | About 5,000 |
| Replies to the first offer | 300 |
| Booked jobs | 24 |
| Revenue produced | $84,000 |
| Media cost | Effectively the cost of the messages |
That is revenue from people the company had already paid to acquire. No auction, no cost per click, no competing with three other contractors for the same lead.
Assemble the List First
The work is mostly plumbing of a different kind: getting the records into one place. Pull from every system you have.
- Your dispatch and billing platform, which holds every customer you have invoiced
- Your CRM, which holds the deals that never closed
- Estimates and proposals that were sent and never signed
- Web form submissions from the last several years
- Call tracking records with caller names and numbers
- Spreadsheets on somebody's desktop, event lists, membership lists
De-duplicate by phone number, drop obvious bad data, and tag each record with the last service and the last date of contact. That tagging is what lets you send relevant offers later instead of the same message to everyone.
Write the Offer
The message that works is short, seasonal, personal and has one clear reply action. Here is the structure, close to what 72 Degrees sent.
Hi, this is Alice with Bob's HVAC. With fall here we wanted to be sure your home is ready for the cold. As your trusted HVAC professionals we are running a limited special: $500 off a new system install. Reply YES and we will send the coupon with all the details.
Four things make it work. It is from a named person, not a brand. It references the season, which gives a reason for the message to arrive today. It carries a specific dollar offer rather than a vague invitation. And the response is a single word, which is a far lower bar than clicking through to a form.
If you would rather start with email, our customer follow up email scripts are a good starting point for tone and structure.
Build a Calendar, Not a One Off
The mistake is treating this as a one time revenue rescue. The value comes from a rhythm, roughly one offer a month rotated by season and segment.
| Season | Offer angle | Best segment |
|---|---|---|
| Early spring | AC tune up before the first hot week | Customers with no service in 12 months |
| Early summer | System replacement financing | Estimates that never closed |
| Early fall | Heating check and safety inspection | All past customers |
| Late fall | Install special with year end pricing | Unconverted prospects |
| Winter | Water heater and pipe protection | Homes over a certain age |
| Anytime | Maintenance plan enrollment | Repeat customers |
Handle the Replies With Automation
Three hundred replies in a day will bury a front office that is also answering the phones. Plan for the response before you send.
Route replies into your follow up platform so an immediate acknowledgement goes out, then have automation offer a scheduling link and hand off to a human only when a question needs a real answer. This is the same speed to lead discipline that matters everywhere else in the business, and the same two way messaging and automation stack handles it. Without that, a successful campaign turns into 300 missed opportunities and an unhappy office.
Rules That Keep It Working
- Honor opt outs immediately. Include an opt out on every text and process it automatically.
- Do not oversend. Roughly monthly is a rhythm; weekly is a nuisance and will cost you the list.
- Segment before you send. A maintenance plan offer to a customer who already has one damages credibility.
- Track it like any channel. Sends, replies, booked jobs and revenue, so you know its cost per lead alongside everything else.
- Keep the list clean. Every new job, form and call should feed the database automatically, not through someone remembering to export.
Done consistently, database marketing typically becomes the lowest cost per lead line in the entire marketing plan, and it is the only one your competitors cannot outbid you for.
Get the Book and the Full Growth Training Library, Free
Josh Nelson's book, How to Triple Your Sales by Getting Your Digital Marketing Right, plus the complete Growth Training Library: 10 workshops covering local search, paid ads, website conversion and tracking, built specifically for plumbing, HVAC and electrical contractors. Read it, watch it, and put it to work in your own company.
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