Recover missed calls and book HVAC appointments with GoHighLevel, Twilio, Gemini

Workflow explanation: [Watch on YouTube](https://m.youtube.com/watch?v=7pcZDdO7tkM&utmsource=chatgpt.com)

Automated Missed Call Recovery with Gohighlevel + Twilio + Gemini

Prerequisites for the HVAC n8n Workflow

Before setting up the workflow in n8n, ensure you have completed the following foundational steps:

Twilio Call Status Webhook: Set the webhook of Sub-workflow 1 in the Twilio Voice section for "Call Status Changes". GoHighLevel Custom Fields: Create two custom fields in GoHighLevel (GHL): 1. called phone number 2. call sid Twilio API Integration: Ensure your Twilio API credentials are ready and configured in n8n. GoHighLevel Developer App: Create a free GoHighLevel Developer App with the following scopes: contacts.readonly, contacts.write, opportunities.readonly, opportunities.write, locations.readonly. Generate the Client ID and Secret within the Developer App. Enter these into the n8n GHL OAuth credentials. Copy the OAuth Redirect URL from n8n to the App OAuth redirection settings and complete the authentication process. GoHighLevel Automation Workflow: Create a workflow inside GHL that triggers when a "New Appointment is Created" and fires a POST webhook to the URL generated by Sub-workflow 3 in n8n. GoHighLevel Pipeline Setup: Create a pipeline in GHL named "Missed call to appointment" with the following 3 stages: 1. SMS sent No Reply 2. Engaged | Appointment Link Sent 3. BOOKED Scheduling Link: Note down your GoHighLevel scheduling link and keep it handy to insert into the Twilio SMS node.

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Workflow Breakdown

This n8n architecture is divided into three distinct sub-workflows. Here is the node-by-node explanation.