Developer API

Integrate HVAC Design
Into Your Workflow

Automate mechanical design tasks, run ASHRAE-compliant load calculations, and generate complete design packages — all via a clean REST API.

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hvakr-api.sh 
curl -X POST https://api.hvakr.com/v0/projects/{id}/loads \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"method": "rts", "peakOnly": true}'

Endpoints

What You Can Build

The full HVAKR calculation engine, exposed via REST. Build integrations, automation pipelines, or your own design tools on top.

Weather Data

Search current global ASHRAE weather data by latitude/longitude.

Project Management

Create and configure HVAKR project data programmatically.

Load Calculations

Calculate project loads with the ASHRAE Radiant Time Series method.

Register Schedules

Generate register schedules across all zones automatically.

Duct Sizing

Calculate all duct sizes across complex multi-zone designs.

Dual Interface

View results via API response or in the cloud-based design interface.

Get Access

Ready to Integrate?

API access is available on Professional and Enterprise plans. Get in touch to request credentials and review the full endpoint documentation.

Schedule A Demo View Docs