Open-Source Digital Twin

Airflow & IAQ
engineered with precision.

Real-time indoor air quality monitoring, 3D airflow simulation, and automated ventilation control — all from a single pane of glass.

View on GitHub Early Access →
3D Floor Plan — auto-rotate
Current State

Your sensors are screaming. You're not listening.

Real readings from a typical European home. CO₂ above 800 ppm degrades cognitive performance by 15–20%.

Sensor 01
Living Room
Temperature27.1°C
Humidity52%
CO₂612 ppm
PM2.518 µg/m³
VOC Index142
Sensor 02
Kitchen
Temperature30.0°C
Humidity48%
CO₂801 ppm
PM2.542 µg/m³
VOC Index210
Sensor 03
Office
Temperature30.4°C
Humidity51%
CO₂945 ppm
PM2.515 µg/m³
VOC Index168
Context

Europe is heating up. Homes aren't adapting.

43.8°C
Peak temperature recorded in France, 2024
~380M
Europeans exposed to >30 °C for 30+ days/year
6–19%
Air conditioning penetration across Germany
€50–150
Annual energy savings per household with smart ventilation
Platform

What BreezeTwin does.

A single platform that replaces fragmented dashboards, manual scheduling, and guesswork.

3D Airflow Simulation
GPU-accelerated CFD-lite solver renders real-time airflow patterns overlaid on your floor plan geometry.
Multi-Sensor Fusion
Ingests BLE, Zigbee, MQTT, and HTTP sensor streams. Normalizes, calibrates, and deduplicates automatically.
Anomaly Detection
Edge ML models flag CO₂ spikes, humidity drift, and thermal anomalies before they affect occupant comfort.
Automated Ventilation
Schedule and trigger window openers, MVHR boost, and exhaust fans based on IAQ thresholds and occupancy.
Energy Reporting
Track heating degree hours, ventilation energy cost, and CO₂ reduction metrics with weekly digest emails.
Open Protocol
REST API, WebSocket feed, and Home Assistant / Node-RED integration. Your data stays local by default.
Landscape

Where we fit.

Segment Examples Typical Price BreezeTwin Edge
DIY Sensor Platforms Home Assistant, Grafana + InfluxDB €0 (self-hosted) Pre-built 3D viz + IAQ analytics — no YAML config
Smart Thermostats Netatmo, tado°, Sensibo €150–400 HW Multi-zone CO₂/PM2.5, not just temperature
Commercial BAS Siemens Desigo, Johnson Controls €5k–50k install Residential-scale, plug-and-play in under an hour
Indoor Air Quality Monitors Airthings, Awair, IQAir €150–300 HW Closed loop: monitors + simulation + actuator control
HVAC Optimization 8760, PassiveLogic €20–100/mo B2B Open source core, self-hostable, no vendor lock-in
Academic CFD Tools OpenFOAM, ANSYS Fluent €0–50k license Real-time interactive, runs on a Raspberry Pi
Pricing

Open core. Pay for managed.

The core engine is MIT-licensed. Managed cloud and premium features are optional.

Community
€0 forever
Self-host the full stack on your own hardware.
  • 3D airflow simulation
  • Multi-sensor ingestion
  • Basic anomaly alerts
  • REST + WebSocket API
  • Community support
Pro
€9.99 /mo
Managed cloud with extended retention and mobile app.
  • Everything in Community
  • Managed cloud hosting
  • 30-day data retention
  • Mobile push notifications
  • Automated weekly reports
  • Email support
Building
€29.99 /mo
Multi-unit buildings with occupancy analytics and HVAC integration.
  • Everything in Pro
  • Multi-zone / multi-unit
  • Occupancy heatmaps
  • 1-year data retention
  • HVAC actuator API
  • Priority support

Start breathing better today.

Fork the repo, connect a sensor, and see your airflow in 3D within minutes.

Star on GitHub MIT Licensed