AC Overcool Max will allow you to regulate the humidity level in your home even if you don’t have a dehumidifier installed. This setting can be accessed by going to:
MAIN MENU > SETTINGS > INSTALLATION SETTINGS > THRESHOLDS > AC OVERCOOL MAX
AC Overcool Max will continue to run your air conditioning past your desired set point by the value selected here. For example, if your AC Overcool Max setting is set to 2 degrees and your desired set point is 72 degrees, the ecobee will continue to run your air conditioner until the temperature reaches 70 degrees (2 degrees past your set point) to lower the humidity level. Since air conditioning naturally removes humidity from the air, running a longer cooling cycle will bring down the humidity level in your home.