RTH9585WF vs RTH9580WF: Buy the RTH9585WF

Want to buy a new Honeywell thermostat but you can decide decide between the RTH9585WF and the RTH9580WF? Take it from me, buy the RTH9585WF! These two thermostats are identical twins, born four years apart. And since the 9585WF is the newer model, you will be better off  buying that one. In the chart below, …

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