Found these guys but doesn't look like it's for sale yet and I am thinking there has to be someone working on a cheaper home use solution - https://sunflower-labs.com/. Source: about 1 year ago

Https://sunflower-labs.com/ It exists and is supposed to be available this year, but per their FAQ it will be astronomically expensive (they don't even sell them, they rent at $3k/month!). Source: almost 2 years ago

Has existed for several years, but cost is not yet consumer accessible. $10k last I checked. https://sunflower-labs.com. Source: almost 2 years ago

Weird that Google is selling a six year old product that they haven’t EOLed. I can’t imagine all the chips we sourced in 2015 are all still available. It takes a full time team of engineers to keep a hardware product shipping as parts need to be updated regularly, with the increase in products covering fewer systems each, but about the same overall coverage of an older but more expensive product, it might makes... Source: over 2 years ago

New home owner, and we installed the Nest Learning Thermostat. Really don't need anything other than the ability to change the temperature on the phone, or to kick off the fan. Source: about 3 years ago

What do you mean the temperature sensors don't work? They work just fine with the Nest Learning Thermostat 3rd Gen (https://store.google.com/us/product/nest_learning_thermostat_3rd_gen). The "Nest Thermostat" isn't a replacement for the top end of the Nest product line. Source: about 3 years ago