Observed arrival · 2026-10-18
Glimola: a local OpenTherm controller for Home Assistant
Glimola is a planned hardware controller that would let Home Assistant set a compatible gas boiler’s flow temperature without a cloud account.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Home Assistant users with OpenTherm gas boilers
- Worth noticing
- The stated design uses two OpenTherm wire pairs and USB-C or 12–24 V DC power; it does not touch 230 V.
Field notes
The listed hardware includes an isolated OpenTherm boiler interface, a second port for the thermostat, and onboard temperature and humidity sensors, with an optional 1-Wire probe. The page says the ESPHome configuration will be public on GitHub and that CE marking is planned before the first units ship; these are launch claims, not evidence of a finished device.
Observed signals
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Editorial observations of this landing page, not a rating.
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◎NicheUnusually specific use
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