I am looking for a thermostatic head with ESP32/ESP8266 inside

I am looking for a smart thermostatic head that had control on an esp32 or esp8266. I would like to take it apart, get to the microprocessor and reprogram it. Why ESP because I play with it a lot and I think I could easily write my own program. Alternatively, I could find a smart head that is easy to take apart (not glued) and has enough room for me to fit my own electronics.