Installing a new Hunter thermostat in your home creates a real win-win situation. You get the improved comfort created by a more accurate thermostat, plus big potential energy savings In fact, you can reduce heating and cooling costs by as much as 33% And - installation is easy - most homeowners can do it themselves in less than 30 minutes,ADA Compliant: No Energy Star Compliant: Yes,{Product Feature Digital Programmable Ability to program all 7 days separately Easy Installation in 30 Minutes Or Less Energy Monitor tracks system run hours Furnace filter change indicator Home Today Override Indiglo backlight display Programmable Hold {Compatable with Air conditioning Gas, electric and oil furnaces Gas and oil fired boilers 2 Wire hot water, radiator heat Most 24 Volt and Millivolt systems Single stage heat pumps without auxillary heat Not for use with 110 or 220V Electric baseboard heat Not for use with Heat pumps with auxillary heat Not for use with Multi-stage systems Not for use with 3-wire hot water systems