Three Types of Programmable Digital Thermostats
A 5+2 model has one setting schedule for weekdays and another for weekends.
The 5-1-1 model has one setting schedule for Monday through Friday, one for Saturday and one for Sunday.
The flexible 7-day model allows a different daily schedule with up to four different temperatures time periods each day.
Some more-advanced units run diagnostic programs and can tell homeowners information such as when to change the air filter. There are even units that start heating (or cooling) early so the scheduled temperature is reached at the desired time. A local Aire Serv expert can help in the selection and installation of the best model for your home.

