This is a preassembled unit. Ready to install.

This release is targeted at makers and early adopters!
Please check the latest release notes about what detailed feature to expect and what bugs are still among us.

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HestiaPi Touch – Complete circuit + FREE SHIPPING

Product Description


  • 3D Printed case (please select one)
  • Controls heating, ventilation, air conditioning and/or hot water individually from any Internet connected point on earth
  • Supports most HVAC systems with 4 wires R, W, Y, G (Red, White, Yellow, Green) – Please note that separate mains voltage is still needed and common wire C is not supported
  • Monitors temperature, air pressure and humidity and plots them against time as a graph
  • Fahrenheit (°F – default) and Celsius (°C) supported
  • 3.5″ LCD single-point touch screen snaps on RaspberryPi GPIO header
  • WiFi Internet connectivity
  • Mains powered (100-240V AC) < 3W
  • Raspberry Pi Zero W Inside
  • Running OpenHAB 2 platform
  • Fully MQTT compatible
  • Smartphone App supports Android, iOS, Windows and Pebble
  • Modular design for easy future upgrades and troubleshooting



3-part 3D printed case

3.5″ LCD resistive touch screen

Raspberry Pi Zero W

Broadcom BCM2835 @ 1GHz, Single-core CPU


8GB microSD loaded with latest software updates

> 802.11 b / g / n Wireless LAN
> Bluetooth 4.1 Low Energy (BLE)

Bosch BME280 I²C

Temperature: -40/80°C

Relative Humidity: 0-100%RH

Temperature: ±0.5 °C

Relative Humidity: ±3 %RH


2A 110-250VAC

3 Solid State Relays (SSR) – Please note that *only* AC (not DC) current can be controlled. That is the standard in all HVAC systems.

Less than 3W. That means less than 5GBP or 5USD per year!

Seen from Raspberry Pi side, top to bottom. Left: AC (L), AC (N) Right: R, Y, W, G (Red, Yellow, White, Green)


Please note that bottom side of PCB, microHDMI, USB for power and camera connectors are physically blocked



Please read the documentation before purchase and installation and make sure you know what you are doing.


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