Code here. GitHub - skenderh/AirconKeypad (I just uploaded it). Considering that we are in winter now, not much of temp change, not sure how it will go during summer, as the device is in the attic. So far stable anyway.
Thanks. I’m currently getting drift between morning and afternoon once the house heats up a bit. It’s also in an enclosure in the roof space. I will get a DS18b20 also and add it to my circuit so I can try compensate later if need be.