HVAC Builder for ChatGPT

app.hvacbuilder/hvac-builder

Design, solve and simulate HVAC systems from real components, weather years and buildings.

client:ChatGPT transport:streamable-http

Install HVAC Builder in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://hvacbuilder.app/api/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs