AirNode
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ESP32 · SHT40 · EU-hosted

Know your air.
Automate the rest.

Every reading, live. AirNode compares indoor and outdoor conditions and ventilates only when it genuinely lowers moisture or temperature — no guesswork, no wasted energy.

AirNode fleet dashboard
Indoor
21.4°C
Fan
Running
EU-hosted (Frankfurt) No tracking · No ads No cookie banner Made in Germany
What AirNode does

Everything you need to keep the air right.

One controller, one dashboard — from raw sensor readings to automatic decisions.

Automatic ventilation

Differential humidity & temperature logic compares indoor vs outdoor air and runs the fan only when it actually lowers moisture or heat.

Real-time monitoring

Temperature, humidity and fan load streamed live, with clean 24-hour, 7-day and 30-day history for every device in your fleet.

Weekly schedules

Force the fan on, off, or back to auto across the week. Intervals revert automatically when they end — set it once and forget it.

Alerts that matter

Threshold warnings for humidity, temperature and device health — so you know before a damp room or a stalled fan becomes a problem.

How it works

From sensor reading to smart airflow.

A single ESP32-based device closes the loop — measure, decide, act, sync.

01

AirNode device

An ESP32 controller installed in the room or duct.

02

SHT40 sensors

Measure indoor & outdoor temperature and humidity.

03

Differential logic

Compares the two and decides if ventilating helps.

04

Fan drive

Modulates the ventilation fan accordingly.

05

Cloud dashboard

Everything synced to app.air-node.net, hosted in the EU.

The app

Built for clarity — in light and dark.

Real screens from app.air-node.net. Every view adapts to your theme.

Dark
Fleet dashboard — every device at a glance.
Fleet dashboard — every device at a glance.
Dark
Device detail with live telemetry.
Device detail with live telemetry.
Light
Temperature & humidity history.
Temperature & humidity history.
Dark
Weekly fan schedule editor.
Weekly fan schedule editor.
Light
Alerts and notification settings.
Alerts and notification settings.
Dark
Account & device management.
Account & device management.
Privacy done right

Your data stays yours.

Privacy isn't a setting we bolt on — it's how AirNode is built. No surveillance, no third parties reading your air, no dark patterns.

Read the Privacy Policy

EU-hosted

All your data is stored in Germany (Frankfurt) — never sold, never mined.

No tracking

No analytics, no ad pixels, no third-party scripts. That is why we need no cookie banner.

Yours to take

Export or delete your account and all its data at any time, from the app.

Encrypted

Encrypted in transit and at rest, with per-device credentials for every AirNode.

Put your ventilation on autopilot.

Create an account and connect your first AirNode in minutes.