> If I can use an air conditioning metaphor, it is more efficient to set the house at a temp and keep it there, than to keep turning the AC off, letting the house heat up, and trying to bring it back down from 90.
While I get what you're trying to say, if I can be a bit pedantic this is not more efficient thermodynamically. It is more efficient to let the house heat up and then bring its temperature back down.
Thank you. I just spent a while investigating this and found out I (and probably many others) have been lied to my whole life.
If I look at it from the point of view of a thermostat salesman or support person, and consider the mechanical nature of early thermostats, it makes sense why people would start to believe this and share it.
I will probably still act as if it's true, since I work from home and don't like being hot, but I will choose a different metaphor in the future. I will also probably be a bit pedantic as well if I hear people bring this up, to try and help kill the myth.
While I get what you're trying to say, if I can be a bit pedantic this is not more efficient thermodynamically. It is more efficient to let the house heat up and then bring its temperature back down.