A microclimate management system including a person support surface including one or more sensors, a fluid supply device coupled to an inlet of the person support surface and configured to supply fluid to an outlet the person support surface, and a controller configured to detect an inlet condition value at the inlet of the person support surface, detect an outlet condition value at the outlet of the person support surface, determine a difference between the inlet condition value and the outlet condition value, and transmit a first alert in response to determining that a rate of change of the difference between the inlet condition value and the outlet condition value is below a lower condition threshold.