In this post, we show How to Calibrate Honeywell RTH9580WF Thermostat Temperature. Now why would you wish to calibrate the temp reading on a thermostat (t-stat)? Well, perhaps your Honeywell t-stat reads warmer or cooler than the room feels. So you’d like to bring the t-stat temp reading more inline with how it really is. … Continue reading How to Calibrate Honeywell RTH9580WF Thermostat Temperature