Use in ChatGPT

Connect the workspace#

You need a VentilatePro account and a ChatGPT account that permits custom plugins. ChatGPT controls availability through account and workspace settings.

1. Enable Developer mode in ChatGPT settings, then open Plugins → +.
2. Name the connection VentilatePro, choose Server URL, and enter:

https://ventilatepro.com/mcp/workspace

3. Choose OAuth. Sign in to VentilatePro and approve project, entity, and calculation read access.
4. Install the plugin from your personal Plugins directory. Open VentilatePro in the sidebar, or select it in a Work chat and ask “Open VentilatePro.”

The sidebar workspace uses /mcp/workspace. For an agent that needs the wider tool catalog, follow general MCP setup instead.

Menus can change. See OpenAI's connection instructions for current availability.

Use the Home, Calculators, and Results tabs#

• Home: browse engineering examples and documentation. Start chat opens and sends an example in a new conversation on supported web and desktop hosts. Mobile and hosts without this capability use Ask in this chat.
• Calculators: enter inputs, review their units, run a calculation, and inspect its basis.
• Results: choose an accessible project, then review saved rooms, zones, or AHUs.
• Discuss in ChatGPT: share the displayed inputs and results with the conversation for interpretation.

Choose Open calculator or View results on a Home example to go straight to its workspace view.

Try the six calculators#

Copy a prompt below into a conversation with VentilatePro selected, or use its matching example on the plugin Home tab. These examples use IP units.

Psychrometrics#

Use VentilatePro to calculate air properties at 75°F, 50% relative humidity, and sea level. Report dew point, humidity ratio, enthalpy, and units. Explain the pressure assumption and condensation risk.

Inputs: 75°F dry bulb, 50% RH, sea-level standard pressure. The dew point is approximately 55.1°F. Surfaces colder than the dew point can condense moisture.

Duct sizing#

Use VentilatePro to size a duct for 1,200 CFM at 800 FPM with a 2:1 rectangular aspect ratio. Show the area, round diameter, and rectangular dimensions.

Expected area: 1.50 ft². The round diameter is approximately 16.6 in. The rectangular dimensions are approximately 20.8 × 10.4 in. This is a velocity sizing check; review friction, fittings, and standard fabrication sizes separately.

Sensible load#

Use VentilatePro to calculate sensible cooling load for 1,200 CFM entering at 75°F and leaving at 55°F, using 1.08. Show the formula, Btu/h, and refrigeration tons.

Expected result: 25,920 Btu/h, or 2.16 tons, using standard-density air. Positive load represents cooling.

Hydronic load#

Use VentilatePro to calculate hydronic load at 24 GPM and a 10°F temperature difference, with water at 8.33 lb/gal and specific heat 1 Btu/lb·°F. Show the inputs, formula, and units.

Expected result: 119,952 Btu/h, or approximately 10.00 tons. Use project-specific fluid density and specific heat for glycol.

Fan power#

Use VentilatePro to calculate fan power at 5,000 CFM and 2 inches water gauge, with fan efficiency 0.65 and motor efficiency 0.90. Distinguish shaft power from electrical input power.

Expected shaft power: approximately 2.42 hp. Electrical input: approximately 2.01 kW. Enter efficiencies as fractions.

Pump power#

Use VentilatePro to calculate pump power at 100 GPM and 60 feet of head, with pump efficiency 0.70, motor efficiency 0.90, and specific gravity 1. Explain the power values and units.

Expected shaft power: approximately 2.16 hp. Electrical input: approximately 1.79 kW. Specify total head in feet of the pumped fluid.

See the calculator reference for formulas, validation, units, and the additional CLI/MCP calculators.

Review projects and compare operating points#

Use VentilatePro to help me choose a project and show its saved room, zone, and AHU results. Flag stale or blocked calculations and include units.

Use VentilatePro to review my selected project's room airflow schedule. Include room IDs, names, saved supply and outdoor-air values, units, and calculation status.

Use VentilatePro to review saved zone airflows and calculation status for my selected project. Identify stale or blocked results and preserve the returned units.

Use VentilatePro to review my selected project's saved AHU airflow, coil loads, and calculation status. Include record IDs and units.

Use VentilatePro to compare fan input power at 5,000 CFM and 2 versus 3 inches water gauge, holding fan efficiency at 0.65 and motor efficiency at 0.90. Show both calculations and explain what the comparison assumes.

Use VentilatePro to prepare a read-only engineering review of my selected project's saved room, zone, and AHU results. Summarize missing inputs, stale or blocked calculations, and unresolved design questions with record IDs and units.

Read the project results guide for interpreting saved values and calculation freshness.

Understand the workspace limits#

The workspace reads saved values. Update inputs and recalculate in VentilatePro, then refresh Results. It does not modify projects or run simulations. A saved result or a successful tool response does not by itself confirm that a design is complete.

Use the wider MCP integration for supported project editing and guarded automation. Its scopes and tools differ from the sidebar workspace.

Resolve common connection issues#

See troubleshooting or contact support.