Trigger HVAC upsell campaigns from weather data and handle bookings with GoHighLevel, WhatsApp, WeatherAPI and Gemini

by iamvaar ✓ · 146 views · created 2026-05-10 · Lead Nurturing, AI Chatbot

What this workflow does

This AI workflow has 36 nodes and runs on a schedule (every day at 07:00) (plus 1 other trigger). Along the way it connects HighLevel, WhatsApp Business Cloud, Google Gemini Chat Model and Redis Chat Memory. It also calls api.weatherapi.com and nominatim.openstreetmap.org over HTTP.

How it runs

Trigger: On a schedule (every day at 07:00) (plus 1 other trigger).

1. Fetch Contacts (HighLevel): get many
2. If: checks a condition and branches into true / false
3. If: checks a condition and branches into true / false
4. Fetch GHL Contacts (HighLevel): get many
5. Group Contacts by City (Code): runs custom JavaScript code
6. Loop Over Contacts (Loop Over Items (Split in Batches)): loops over the items in batches
7. Check GHL Contact Existence (If): checks a condition and branches into true / false
8. Fetch Weather Forecast (HTTP Request): calls api.weatherapi.com
9. Fetch City from Address (HTTP Request): calls nominatim.openstreetmap.org
10. If: checks a condition and branches into true / false

…plus 16 more steps. See the full node list below.

Services it uses

HighLevelWhatsApp Business CloudGoogle Gemini Chat ModelRedis Chat Memory

HTTP calls to: api.weatherapi.com, nominatim.openstreetmap.org

Before you upgrade to n8n 3.0

Nodes used (13)

• HighLeveln8n-nodes-base.highLevel
• Loop Over Items (Split in Batches)n8n-nodes-base.splitInBatches
• Ifn8n-nodes-base.if
• Coden8n-nodes-base.code
• HTTP Requestn8n-nodes-base.httpRequest
• Waitn8n-nodes-base.wait
• WhatsApp Business Cloudn8n-nodes-base.whatsApp
• Schedule Triggern8n-nodes-base.scheduleTrigger
• WhatsApp Triggern8n-nodes-base.whatsAppTrigger
• AI Agent@n8n/n8n-nodes-langchain.agent
• Google Gemini Chat Model@n8n/n8n-nodes-langchain.lmChatGoogleGemini
• Redis Chat Memory@n8n/n8n-nodes-langchain.memoryRedisChat
• High Level Tooln8n-nodes-base.highLevelTool

From the author

Project Overview: Automated Climate-Driven HVAC Upsell & AI Concierge This project is specifically built for an HVAC business to automatically upsell to old customers when their locality has a heatwave or snow wave forecast in the upcoming five days.…

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