The Honeywell Home RTH221B is part ... such as those listed below. Manual operation: The ease of manually controlling the thermostat's temperature set-point, heating/cooling schedule, home/away ...

The Honeywell Home RTH9585WF is ... occupancy sensing and learning. Manual operation: The ease of manually controlling the thermostat's temperature set-point, heating/cooling schedule, home ...

Both make options that are among the best smart thermostats, but they have different design, specs and smart options. Our Nest vs Honeywell guide is here to help you choose between them.