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Replace Google Nest thermostat > DIYLESS OpenTherm Thermostat 3

Posted: Thursday 11 September 2025 20:33
by jberinga
I'm facing a challenge getting my Google Nest thermostat to work again. (See the issue on GitHub: https://github.com/rolandbreedveld/nest-api/issues/16). It might be necessary to replace the thermostat.

Does anyone have experience with the OpenTherm thermostat from DIYless (https://diyless.com/product/opentherm-thermostat3)? An advantage for me seems to be that you won't need a "cloud account," as everything seems to be managed locally.

Any help with the Google Nest thermostat or some advice about a new thermostat would be greatly appreciated! :D

Re: Replace Google Nest thermostat > DIYLESS OpenTherm Thermostat 3

Posted: Sunday 21 December 2025 16:32
by waltervl
This could perhaps be interesting if your 2nd gen NEST thermostat is not smart anymore:
Breathe fresh life into your bricked Nest, now with 100% less evil! :
https://github.com/codykociemba/NoLongerEvil-Thermostat

Re: Replace Google Nest thermostat > DIYLESS OpenTherm Thermostat 3

Posted: Friday 26 December 2025 10:42
by jberinga
Thanks!

Although I have already replaced my Nest thermostat with the DIYLESS thermostat, I will check it out.