Working Demo

HVAC Voice AI Agent

Summit HVAC — an AI receptionist that answers calls, qualifies leads, and books appointments. Zero human intervention. This is the demo that closes deals.

Want your own AI receptionist?

CallMinds gives your business a 24/7 voice agent — live in days, not months.

Claim your number →

📞 Live Demo Number

⚠️ No live number yet. The AI is running server-side — you just need a phone number from Retell to connect it. See the setup steps below.

✅ What It Does

  • Answers every call — 24/7, never misses one
  • Qualifies the lead: service type, address, urgency
  • Books against available slots automatically
  • Sends SMS confirmation after booking
  • Text-back on missed calls via Twilio
  • Post-call lead analysis via OpenAI

Capabilities

🗣️
Call Answering
Warm, professional voice — never misses a call
🎯
Lead Qualify
Service, address, urgency — all collected
📅
Auto Booking
Checks slots and confirms appointments
💬
SMS Follow-up
Confirmation + missed call text-back

⚙️ How to Get Your Number

The AI agent is live. Connect it to a Retell phone number in 5 steps:

1

Sign up at Retell

Create free account at app.retellai.com — 60 free minutes with trial.

2

Create an agent

In Retell dashboard → create agent. Under General → Backend, set:
http://callminds.polsia.app/api/retell/register

3

Enable Custom LLM

In agent settings, enable Custom LLM Responses. Set customized-generate to:
http://callminds.polsia.app/api/retell/customized-generate

4

Buy a phone number

Purchase a number in Retell. Set its webhook URL to the register endpoint above. Set env var HVAC_PHONE_NUMBER to the E.164 number (e.g. +15551234567).

5

Call and test

Call the number. AI answers → collects info → books → texts confirmation. Share with prospects.

Env vars to configure:

HVAC_PHONE_NUMBER ✗ Not set
TWILIO_ACCOUNT_SID For SMS
TWILIO_AUTH_TOKEN For SMS
TWILIO_PHONE_NUMBER For SMS

🎭 Demo Script — Use This to Close

Call this number while prospects are watching. Here's the flow:

🎤 You say:
"Hi, my AC is making a weird noise and it's not cooling properly."
🤖 AI responds:
"I can help — what's your address so I can check availability?"
🎤 You say:
"123 Oak Street, Austin."
🤖 AI responds:
"I have two slots: tomorrow 10 AM or 2 PM. Which works for you?"
🎤 You say:
"10 AM works."
🤖 AI responds:
"You're all set! AC repair at 123 Oak Street tomorrow at 10 AM. A confirmation is on its way to your phone. Anything else?"
📱 Seconds later: customer gets confirmation SMS. No human needed. This is what your business looks like with CallMinds.
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