Honeywell 5-1-1-Day Electronic Programmable ThermostatCategory: Honeywell Thermostat CoversMaximize comfort, reduce household energy use and save money with the 5-1-1-Day Honeywell Electronic Programmable Thermostat. Featuring a user-friendly design that lets you program weekdays, Saturdays and Sundays separately, this thermostat makes it easy to sync your home's heating and cooling system with your schedule and it is ENERGY STAR-qualified for efficiency you can count on. Compatible with most electric, gas oil single stage furnaces, heat pumps without backup heat, heat only and cool only furnaces. The 5-1-1-Day Honeywell Electronic Programmable Thermostat will not work on electric baseboard heat. Automatically switches from heat to cool to adjust the preheating cooling of your home, so you can feel comfortable at your programmed times.