This dehumidifier from Hydrosorbent comes with an inbuilt recharge indicator. The indicator is at first orange in color, nevertheless it turns by itself apparent when it requires a reactivation. What to do if I should dehumidify my complete house, not just a person area? Can I invest in only one, https://dstdehumidifiers.co.uk/case-studies/desiccant-dehumidifiers-in-cold-stores/