Where I’m at, the temps flip-flop day to day, even hour to hour. In the morning it’s 35° outside, and by evening it’s 79°. I gave up keeping up with the temps and shut my unit off for the time being.
My question is why can’t HVAC units be programmed to say that if the outside temp reaches n° and the inside temp reaches m° cold, turn on the heat; conversely, if the outside temp rises to n° and the inside temp reaches m°, then turn on the AC?
My thermostat already knows the outside and inside temp, but I still have to manually switch it back and forth. I want a system that I can just set it and forget it all year round.
Higher trim cars have radiation sensors to help account for solar heat gain.
Honeywell has individual room sensors available that you can average or prioritize.
I think the real reason you don’t see them- the average person is too stupid to understand them and set them up.
Less about people being too stupid and more about people just not seeing the point. The average person touches the AC/Heat switch only a few times a year.
I personally love the days where it’s cool enough at night to open the windows and get the house temperature down. Means the AC the next day doesn’t have to do nearly as much (and thus my electric bill isn’t as high).