This model does not have a setting where it heats if colder than 68 and cools if warmer than 74. This is Florida where the temperature shifts that much in a day. I have changed the setting multiple times this past month and I never changed anything with my old home. When I need service, I will be upgrading the thermostat. This model was installed by builder. The fact that I can control it from the internet isn’t that helpful. I become uncomfortable before I manually have to switch modes.