High use of the scheduling feature of the T5 thermostat saved customers between 8 and 16% on heating and cooling bills. Dollar savings range based on nationwide average annual single-family detached home's heat and cooling bills; actual savings varies based on consumption. Save Energy and Get Rewarded. Check with your energy provider about available energy savings rebates to save on your purchase. Plus, eligible customers can enroll in their local Utility's "DEMAND RESPONSE PROGRAM" which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand. 7-Day Flexible Scheduling or Location Based Temperature Control. Its your choice. 7-day scheduling programs your thermostat. Geofence technology helps make you comfortable by using your smartphones location to know when youre away and when you return. Auto Home and Away Mode. Enjoy ideal temperatures at home, then save when away. ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use. C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter. Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.