Skill Claude CodeCodex
Run a sourced, symptom-based HVAC diagnosis. Use when a user describes a fault symptom on heating/cooling equipment (e.g. "heat pump not heating", "water flow fault", "compressor short-cycling") and wants a step-by-step diagnosis with citations. Requires the AskMarcel MCP server (https://mcp.askmarcel.app).
Skill Claude CodeCodex
Look up an HVAC error code and return its sourced meaning and fix. Use when a user gives a brand and an error/fault code (e.g. "Daikin U4", "Atlantic error 07") and wants to know what it means and how to clear it. Requires the AskMarcel MCP server (https://mcp.askmarcel.app).
Skill Claude CodeCodex
Multi-turn guided HVAC troubleshooting for air-to-water heat pumps via diagnoseguided.
Skill Claude CodeCodex
Beta Harness diagnostic session loop for PAC Air/Eau and PAC Air/Air via startdiagnostic and respondtodiagnostic.
MCP server Claude CodeCodexCursor +2
15 HVAC MCP tools: lookups, SKU provenance, guided PAC, Beta Harness sessions. 126 brands. Remote server at mcp.askmarcel.app.