How to adapt a DucoBox Silent system to make it use Open Source hardware and software for keeping CO2 and humidity levels at healthy levels
Posted by jpluimers on 2026/05/05
The hackability of the [Wayback/Archive] DucoBox Silent “smart” home ventilation box with [Wayback/Archive] Flamingo-tech/Open-AIR: Open source system for home ventilation and control via HA based open hardware was shown by [Wayback/Archive] Jilles Groenendijk (@jilles_com) / Twitter with open source products from [Wayback/Archive] Browse products by TheFlamingo on Tindie in this Tweet:
[Wayback/Archive] Jilles Groenendijk on Twitter: “I bought a
duco.eu/uk/products/mechanical-ventilation/ventilation-units/eng-ducobox-silentripped out all its proprietary electronics and replaced it with open source hardware:tindie.com/stores/theflamingoNow I am able to measure temp/humidity/pressure/co2 of all the connected rooms. And switch the ventilation on each individual area.”
The above Tweet contains useful pictures and a video which I have added below the post signature because they so well show the placement of the open source hardware. Same for the pictures from:
- [Wayback/Archive] Jilles Groenendijk :mastodon:: “/mail from
tindie.com/stores/theflamingo“ - [Wayback/Archive] MaaikeV on Mastodon Social on Twitter: “RT @jilles_com@infosec.exchange I have upgraded the DucoBox Silent air ventilation system with new circuitry.
infosec.exchange/@jilles_com/109653396219635609“ - [Wayback/Archive] Jilles Groenendijk :mastodon:: “I have upgraded the DucoBox Silent air ventilation system with new circuitry.” – Infosec Exchange
The whole setup integrates well with Home Assistant.
–jeroen
Video
Video via [Wayback/Archive] https://video.twimg.com/amplify_video/1635929258601086976/vid/1080×19…:
Twitter Images
Mastodon Images
The Wiert Corner - irregular stream of stuff 
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