Install seven-day programmable thermostats

Programmable thermostats save energy by automatically raising or lowering indoor temperatures when the building is unoccupied or at night when occupants sleep. EnergyStar-rated programmable thermostats require two separate programs, one for weekday settings, one for the weekends. Each program must accommodate up to four temperature settings.
Studies show a drawback, however: Some occupants do not understand how to use setback thermostats. It is essential that the thermostats are easy to use. Programmable thermostats usually are most effective in homes where the occupants pay the fuel bill, motivating them to use the thermostats. Typically, they have a payback period of one to two years.

Green points

LEED for HomesLeadership in Energy and Environmental Design. LEED for Homes is the residential green building program from the United States Green Building Council (USGBC). While this program is primarily designed for and applicable to new home projects, major gut rehabs can qualify. : Programmable thermostats are mandatory (EA 6.1)
NGBSNational Green Building Standard Based on the NAHB Model Green Home Building Guidelines and passed through ANSI. This standard can be applied to both new homes, remodeling projects, and additions. /ICC-700: up to 2 pts. for programmable thermostat (705.1)

Learn more in the Green Building Encyclopedia

Mechanical Systems Overview