ServiceTitan now ships AI features natively. For HVAC operators doing $3M+, the question is whether the built-in AI is enough — or whether a custom build is worth the additional spend and complexity. After deploying for dozens of $3M+ HVAC shops, here's the honest answer.
ServiceTitan's built-in AI handles call summaries, dispatch scoring, basic CSR coaching, and review automation. For shops fully embedded in the ServiceTitan ecosystem, this is a real lift — call quality goes up, dispatch decisions improve, and reviews multiply.
ServiceTitan AI is built inside ServiceTitan. That's the strength and the weakness. Custom logic outside the SaaS — your specific insurance handling, your service-area routing, your in-house call scripts — can't be modeled. And you cannot easily pull AI data out for use in other systems.
Once a $3M+ HVAC shop has multiple revenue lines (residential, commercial, new construction, replacement) plus add-on workflows (energy rebates, maintenance memberships, financing routing), the rigidity of in-app AI becomes a tax. Custom builds at $2,500-$4,000/month handle the complexity ServiceTitan AI can't.
Custom AI doesn't require leaving ServiceTitan — it sits on top. Our typical $3M+ HVAC client runs ServiceTitan + a SimpliScale custom AI layer for inbound, qualification, and routing. The AI feeds ServiceTitan via API. Best of both.
Under $3M and committed to ServiceTitan: stick with built-in. $3M+ with workflow complexity: layer a custom build on top. Custom doesn't replace your CRM — it makes it sharper.
Book a free AI audit. We'll show you exactly how much revenue you're leaving on the table — and what a custom build would look like for your business.
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