But if you prefer your grandmother’s thermostat, the Honeywell WiFi Thermostat will look familiar. A good smart thermostat offers flexible programming options. You can get a lot out of the Honeywell RTH9585WF1004. It’s able to adjust energy consumption based on your utility’s pricing, and is Energy Star certified itself. This combination means you can get the most out of your heating, cooling and HVAC system without spending more than you need to.