Automated HVAC Calls: GoHighLevel & Twilio Workflow

Transform missed HVAC service calls into booked appointments automatically with this comprehensive n8n workflow that integrates GoHighLevel, Twilio, and Gemini AI to recover lost revenue from unanswered customer calls.

What this workflow does

This automated missed call recovery system monitors your HVAC business phone calls through Twilio and takes immediate action when calls go unanswered. The workflow creates or updates contacts in GoHighLevel, moves them through a "Missed call to appointment" pipeline with three stages (SMS sent No Reply, Engaged | Appointment, and Converted), and automatically sends follow-up SMS messages to re-engage potential customers. Custom fields track call data including the called phone number and call SID for complete visibility into your call recovery efforts.

Use cases

• HVAC Service Companies: Automatically follow up with homeowners who called for emergency repairs, maintenance, or installations but didn't reach a live person
• Emergency Response: Ensure urgent heating and cooling calls receive immediate SMS follow-up even during high-volume periods
• Lead Nurturing: Convert missed sales calls into scheduled consultations through automated SMS sequences
• Customer Retention: Re-engage existing customers who called for service but hung up before connecting

Technical details

This n8n workflow utilizes multiple sub-workflows and integrations:

• Twilio integration: Monitors call status changes via webhook and manages SMS communications
• GoHighLevel (GHL) integration: Creates contacts, manages pipeline stages, and triggers appointment workflows
• Custom nodes used: If, Set, Twilio, Webhook, High Level, and Sticky Note nodes
• Prerequisites included: Complete setup instructions for Twilio webhooks, GHL custom fields, OAuth authentication, and pipeline configuration

The workflow requires a GoHighLevel Developer App with specific API scopes (contacts.readonly, contacts.write, opportunities.readonly, opportunities.write, locations.readonly) and includes detailed video documentation for implementation guidance.