Answer the $104 lead at 7pm: speed-to-lead for HVAC, plumbing, and roofing

Your lead math breaks at 5:01pm

A home-services lead is expensive and perishable. Across $14.9M in tracked ad spend for 816 contractors, HVAC leads averaged about $104 and non-branded plumbing leads about $167. Those numbers only work if someone picks up, and most shops stop answering when the office closes, which is exactly when a homeowner with a dead furnace or a leaking water heater starts calling down the Google results.

The market is enormous, roughly $650B–$870B in US home services, but the unit economics are decided in the minutes after the phone rings. We build the systems that answer: missed-call text-back that fires in under a minute, after-hours voice agents that triage and book, and estimate follow-up that doesn't quit after one attempt. Automated follow-up converts 25–40% more estimates than ad-hoc callbacks, on an $8,000 roof job or a $9,000 HVAC replacement, that delta is the whole marketing budget.

What we build for contractors

Every item names the tool it runs on.

• Missed-call text-back. Any unanswered ring triggers an SMS within 60 seconds via Twilio or Telnyx, orchestrated in n8n: "Sorry we missed you, is this an emergency, or can we book you for tomorrow morning?" Replies route to your on-call phone or your booking calendar. Full math in our missed-call text-back breakdown for contractors.

• After-hours AI phone answering. A Vapi voice agent answers, separates "burst pipe flooding the basement" from "thermostat acting up," pages the on-call tech for true emergencies, and books routine work straight into ServiceTitan, Jobber, or Housecall Pro.

• Estimate follow-up sequences. Open estimates in your field-service platform trigger a timed SMS-and-email cadence, day 1, day 3, day 7, that stops the moment the job is won or dead.

• Seasonal reactivation. Spring AC tune-up and fall furnace campaigns built off install dates and last-service dates already sitting in your FSM, not a purchased list.

• Maintenance-agreement renewals. Expiring agreements trigger renewal sequences 30 days out, with one-tap payment links.

• Review requests on job close. A "job complete" status flip triggers the review ask while the tech's truck is still in the driveway.

• Lead-source reporting. CallRail tracking numbers plus n8n roll every call, text, and form into one weekly report: cost per booked job by source, not cost per click.

Out of scope, stated plainly: we don't replace your daytime CSR, we don't run dispatch, and we don't resell you leads.

Where it lands by trade

• HVAC. Demand spikes with the weather. The voice agent absorbs the July no-cooling surge that buries a two-person office, and tune-up reactivation runs off install dates already in ServiceTitan.

• Plumbing. At roughly $167 per non-branded lead, after-hours emergencies are the highest-value calls you get. Triage logic separates the 2am burst pipe (page the on-call tech) from the slow drain (book the morning).

• Roofing. Storm events create 72-hour call floods. Overflow answering catches what the office can't, and financing-objection sequences keep working the $8K-plus estimates that stall.

• Landscaping and recurring trades. Route density and renewal economics differ enough that we wrote them up separately in AI for landscaping businesses.

What this costs in the market

Home services is the most-served vertical in the agency ecosystem, with retainers typically running $1.5K–$5K per month. Below that, off-the-shelf AI answering tools run from about $30/month to several hundred per line, the full tier breakdown is in our AI receptionist cost guide, and custom agent builds span a wider band still, covered in how much an AI agent costs.

What moves the price: monthly call volume, how deep the FSM integration goes (read-only lookups versus writing bookings into ServiceTitan), on-call escalation complexity, and how many trades and locations share one system. The sanity check we hold every scope against: one recovered roof job or furnace replacement should cover months of the system's cost. We quote your specific scope, not a package.

How an engagement runs

1. Leak audit (days 1–5). We pull 90 days of call logs from CallRail or your phone system, count the after-hours and overflow misses, and price the leak in your own ticket sizes. If the number is small, we tell you and stop there.

2. Build (weeks 2–3). The n8n workflows, Vapi agent, and FSM integration get built and tested against recordings of your real calls, your services, your service area, your price-question deflections.

3. Supervised launch (weeks 3–4). The agent goes live with every transcript reviewed daily by a human, a documented rollback switch, and booking-only authority, it never quotes prices.

4. Steady state. Weekly transcript audits, monthly reporting on booked jobs by source, and retuning as the season shifts from cooling calls to heating calls.

Why most contractor AI gets turned off

75% of enterprises rolled back customer-facing AI agents (Sinch, May 2026), the leading causes were data exposure (31%), hallucination (22%), and no diagnostics (16%). At contractor scale, the failure looks like an agent inventing a $49 tune-up special, booking a service you don't offer, or leaving no record of what it promised a customer. We unpacked the pattern in why companies are rolling back AI agents.

Three commitments you can verify:

1. Booking-only authority. Agents book and triage. Humans quote. The price-quoting path is blocked in the agent configuration, not in a policy document.

2. You own the stack. The n8n instance, the phone numbers, and the FSM credentials live in your accounts. Fire us and everything keeps running.

3. Disclosure by default. Every voice agent identifies itself as an automated assistant at the start of the call, the same disclosure the EU AI Act's Article 50 requires from August 2, 2026, applied as standard practice regardless of geography.

FAQ

Does this work with ServiceTitan, Jobber, or Housecall Pro?

Yes, those three are the integrations we build most. Booking writes, job-status triggers, and customer lookups run through their APIs via n8n. If you're on FieldEdge or another FSM, we scope that integration during the audit week before quoting anything.

Is automated texting legal for contractors?

Texting a customer back seconds after they called you is a response to contact they initiated, which the TCPA treats differently from cold marketing texts. For promotional sequences we configure written-consent capture, quiet hours, and automatic opt-out logging inside the workflow, and we document all of it.

What happens with a genuine 2am emergency?

The voice agent's first job is triage, not deflection. Emergency signals, flooding, no heat with kids or elderly residents, gas smell, page your on-call tech immediately by phone and SMS. Everything else books into the next morning's slots. You define and approve the emergency list.

Who gets paged when the automation breaks?

We do. n8n error workflows alert our on-call channel, and calls fail over to your existing voicemail-plus-text setup, so a broken integration never means a dead line. You get an incident note with cause and fix, and the transcript log shows exactly what callers experienced.

We tried an AI answering service and shut it off. Why would this go differently?

Most rollbacks trace to missing guardrails and missing diagnostics, the same causes Sinch measured across 2,500+ enterprises. Booking-only authority, daily transcript review, and a documented rollback switch are the difference between an agent you supervise and one you end up apologizing for.

Get a scope and quote

Bring us 90 days of call logs and we'll show you the after-hours leak in your own numbers, then quote a fixed scope to close it. Get a scope and quote.

This page covers the home-services slice of our broader AI automation service. If your jobs come from Google ads, paid ads supervision protects the spend that feeds this system, Google is force-migrating DSA campaigns to AI Max in 2026, and unsupervised migrations burn contractor budgets fast. For dispatch boards or job-costing tools beyond workflow automation, see software development.