There are essentially three variations to choose from: the 7-day, 5+2-day, or the 5-1-1-day. Which one you choose should be based upon your family’s schedule. The family that has a set work/school/home schedule will require a different model than a retired couple who have different activities each day of the week.
7-day models are best if your daily schedule tends to change daily. Perhaps you work two days a week or your youngest goes to preschool three half-days a week. A 7-day model will be the most flexible, and let you set different programs for different days, usually with four possible temperature periods per day.
5+2-day models use the same schedule every weekday, and another for weekends, which works well for those with set schedules during the week, but who vary in their weekend activities.
Please note that you can override any programmed setting, but Mode advises you to stick as closely to the set schedule as possible to reap the maximum benefits. And don’t forget, if you have more than one heating and cooling zone, you will need a programmable thermostat for each.