What does the `calculate_heating_demand` tool do?

It determines the total heating capacity required (in BTU/h) by considering the conditioned area, insulation level, and IECC climate zone.

How can I check if my HVAC unit is large enough?

Use the `validate_equipment_capacity` tool by providing the required heating load, required cooling load, and the nominal BTU capacity of your unit.

Does the cooling calculation include solar gain?

Yes, the `calculate_cooling_demand` tool accounts for solar radiation through window areas in all four cardinal directions.

HVAC Load Calculator (Manual J) MCP Connector for Claude

A+

Calculate heating and cooling loads in BTU/h and Tons using simplified Manual J standards.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server provides a simplified thermal load calculation engine based on the Manual J standard. It allows HVAC professionals and engineers to determine the precise heating and cooling requirements for residential spaces. By using tools like calculate_heating_demand, calculate_cooling_demand, and validate_equipment_capacity, you can calculate heat loss through building envelopes, solar gain from window orientations, and internal heat gains from occupancy. The server also enables checking if a specific HVAC unit's rated capacity is sufficient for the calculated loads.

hvacthermal-loadmanual-jbtucooling-loadheating-demand

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_qbR2bTsa8UkgLE5JKBNOyFoz3rMGTCKIbqa5tiKl/mcp

② Claude Code (terminal)

claude mcp add --transport http hvac-load-calculator-manual-j https://edge.vinkius.com/vk_preview_qbR2bTsa8UkgLE5JKBNOyFoz3rMGTCKIbqa5tiKl/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "hvac-load-calculator-manual-j": {
      "url": "https://edge.vinkius.com/vk_preview_qbR2bTsa8UkgLE5JKBNOyFoz3rMGTCKIbqa5tiKl/mcp"
    }
  }
}

Get full access on Vinkius

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