(Stop Bidding on Broke Leads)
Your marketing agency sends you leads. You book them in ServiceTitan. But the agency has no clue which leads paid you $15k and which were $89 tune-ups. They are optimizing for “clicks” while you lose margin.
The “Feedback Loop” Summary
The Pain: The “Dumb” Algorithm
Google Ads optimizes for “Conversion Volume.” To Google, a lead calling for a $49 capacitor replacement looks identical to a lead calling for a $20,000 full system install. Because there are more “cheap” leads, Google’s AI naturally drifts toward sending you low-value junk.
The Fix: “Revenue Injection”
We build a digital bridge (using n8n) that waits for a job to be marked “PAID” in ServiceTitan. We then push that exact dollar amount back to Google Ads. This trains the algorithm to hunt for Revenue, not just phone calls.
Why Your PPC Cost-Per-Acquisition (CPA) is a Lie
If you are doing over $5M in revenue, you are likely spending $20k-$50k/month on Google Ads (LSA and PPC). Your agency sends you a monthly report saying: “Great news! We got you 100 leads at $50 per lead!”
But your P&L tells a different story. You see high truck rolls, low close rates, and shrinking margins.
The Agency View (Vanity Metrics)
- Goal: Maximize Phone Calls.
- Success: “Form Submitted” or “Call > 60s”.
- Blind Spot: They don’t know if the job booked or canceled.
- Result: They bid on keywords like “AC repair cheap” because they generate cheap calls.
The Owner View (Profit Metrics)
- Goal: Maximize Net Profit.
- Success: “System Replacement Sold ($15k)”.
- Reality: You lose money on $89 diagnostic runs if they don’t convert.
- Requirement: You need Google to find high-intent buyers, not tire-kickers.
The “Revenue Loop” Architecture
To fix this, we must connect your Operational Database (ServiceTitan/Housecall Pro) to your Advertising Database (Google Ads). We use n8n as the secure middleware to handle this sensitive financial data.
| Component | Tools | Role in the Stack |
|---|---|---|
| The Listener | ServiceTitan API (V2) | We set up a listener for the event Job_Completed and Invoice_Paid. |
| The Tracker | GCLID (Google Click ID) | We capture this hidden ID on your website form/call and store it in a Custom Field inside ServiceTitan. |
| The Transmitter | n8n (Self-Hosted) | Matches the GCLID to the Revenue Amount ($) and pushes it to Google via API. |
| The Optimizer | Google Offline Conversions | Google receives the data: “Click ID 12345 just generated $14,500.” It then updates its bidding strategy instantly. |
Standard vs. Revenue-Optimized Flow
Click the buttons below to see the difference in how data travels in your current setup versus the optimized setup.
The “Dead End” Flow
Data stops here. Google assumes every click was a winner.
The “Infinite Loop” Flow
Google now knows to find more people like Click #XYZ.
How We Build It (The Logic)
This is a custom technical implementation that sits on top of your existing software. We do not change how your dispatchers work.
When a user clicks your ad, Google appends a parameter to your URL: ?gclid=AbC123...
We install a script on your website (or CallRail) that captures this ID and saves it into a hidden field on your booking form. When the job is created in ServiceTitan, this ID is saved in a Custom Field called “Google Click ID”. Without this, the loop is impossible.
We don’t send everything back. N8n filters the data:
- IF Job_Type = “Warranty” -> IGNORE
- IF Revenue < $100 -> IGNORE (or send low value)
- IF Revenue > $5,000 -> SEND with High Priority Label
This ensures Google optimizes for your whales, not your minnows.
Once we start pushing data, we switch your Bidding Strategy to “Maximize Conversion Value” (tROAS).
Google’s AI will look at the profiles of the people who generated the $15k revenue and find 100 more people just like them, ignoring the profiles of people who only booked $89 tune-ups. This usually reduces CPL but drastically increases Profit.
Scaling to $10M and Beyond
When you reach enterprise scaling levels, efficiency is everything.
If you spend $50,000/month on ads, and this system improves your efficiency by just 20%, that is $120,000/year in pure profit recovered. Not from getting more leads, but from getting the right leads.
Bonus Strategy: Combine this with High-Intent SEO. Use the keyword data from your highest revenue ServiceTitan jobs to inform your website’s blog content. If “Ductless Mini Split” jobs have the highest margin, write more about that.
Close The Loop
Stop guessing which keywords make money. I engineer the “Revenue Feedback” systems that make your Google Ads account smarter every single day.
Audit My ServiceTitan Data Flow
Need help nurturing the leads that don’t book? Read my guide on SEO & Email Marketing for Trades.