An AI phone agent that picks up every call within one ring.
Answers 24/7, books the appointment, hands the booking to your dispatcher in real time, and sounds like a real human while it does it.
Start with the free ~45-minute Leak Audit. We tell you whether this agent actually fits your shop before anyone quotes anything. Stack6 handles the install end-to-end and walks the scoping numbers with you live.
Missed calls × your average ticket × your typical close rate. For a $3M residential HVAC shop, that's ~22 missed calls a week landing somewhere between $14K and $28K of lost monthly revenue.
The free Leak Audit returns the number for your shop — built from your call volume, ticket size, and close rate. No mock data, no industry averages.
Answers every inbound call in under one ring, 24/7
Bilingual English / Spanish — built in, no extra SKU
Qualifies urgency, service type, and location in a three-question intake
Routes the booking to dispatch via SMS, email summary, or shared calendar
Calendar and CRM integrations available — configured during onboarding
Auto-recovers missed-call leads with same-day callback
The math is universal across residential service. The lived experience is trade-specific. Here's what this agent looks like inside HVAC, plumbing, and electrical shops doing $1M–$10M.
The homeowner Googles "HVAC near me" on a Saturday afternoon. Calls three shops. Two go to voicemail. Yours answers within one ring, qualifies the no-cool emergency, books the next available tech, and pings dispatch. The homeowner stops calling.
Booked $3,400 install instead of letting the competitor catch a hot lead with answered phone alone.
Customer Googles "emergency plumber 24 hours." Most plumbers advertise 24/7 but route to voicemail after 9pm. Stack6 picks up on ring one, identifies the emergency (water shut off? actively flooding?), captures address and contact, and pages the on-call tech with the full intake.
Tech rolls in 30 minutes with the right tools instead of triaging blind from voicemail at 7am.
Estimator is mid-quote on a panel upgrade. Phone rings — a new lead asking about EV charger install. Normally that call would go to voicemail and the lead would cool by Tuesday. Stack6 answers, qualifies the service type, books the next available estimator slot, and the lead is in the calendar before the estimator climbs down.
Three new estimates booked in one day instead of two callbacks plus two cold leads.
Nothing has to come out for us to go live. Keep your existing scheduler, dispatch board, and CRM — the agent works alongside them. Calendar and CRM integrations are available and get configured during onboarding, only where it earns real time back.
After-hours calls die unanswered. Crew is on a job and the phone rings out. 85% of callers who hit voicemail never call back — they call the next shop on Google. Industry data on 1,200+ contractors puts the median annual loss between $45K–$120K, before scaling to your call volume.
The range comes from industry benchmarks for residential service shops your size. Your number gets calculated against your own call volume, average ticket, and close rate inside the free Leak Audit.
What separates a Stack6 receptionist from a generic AI-answering vendor like RingCX or Dialpad AI? Three things, and one honest weakness.
| Stack6 | Generic AI answering service | |
|---|---|---|
| Trade-specific intake | Knows your service lines, ZIP coverage, and emergency criteria — captures the right qualifying fields without scripted menus. | Generic call-tree or scripted "how can I help?" — caller has to translate their problem into the bot's vocabulary. |
| Bilingual EN/ES | Detects caller's language on connect. No separate SKU, no extra fee, no "press 1 for English." | Usually English-only, or charges extra for Spanish channel — common across RingCX, Dialpad, AnswerForce. |
| Dispatch handoff | Writes booking directly to your calendar / dispatcher / FSM. Stack6 handles the integration during onboarding. | Drops a message in a portal you have to check, or emails your inbox. Owner ends up triaging messages at 9am Monday. |
| Pricing transparency | $2,500 setup + $349/mo. Cancel anytime. No per-minute fees, no per-call charges, no "premium AI voice" upcharge. | $0.50–$2 per minute or per call. A busy Saturday can cost more than your whole monthly Stack6 bill. |
Honest about what it's not: this won't replace your dispatcher's judgment on complex jobs, won't handle billing disputes, and won't sell against price objections. It does intake and booking better than human voicemail. Anything past that, it routes to a human — every time.
Collects reviews automatically. Catches problems before they go public.
Chases every cold estimate until it converts or closes out.
Mines your dormant customer base for revenue you forgot you had.
The free Leak Audit returns a recovery estimate built off your own numbers, plus a ~14-day install plan (typical) and exact pricing for the agents that actually belong in your stack.