The most “meaty” part of installing a new Honeywell RTH9580WF smart thermostat, is correctly wiring it up, and so we offer these basic instructions for that here. One useful feature about Honeywell t-stats, is that they generally use the same wire labeling as their older models. Today’s WiFi t-stats still use the R, Rx, C, … Continue reading Honeywell RTH9580WF Smart Thermostat Wiring Instructions