This is why I pour hot water with bleach 1st of every month (except when we leave in motorhome for 3 months each summer but not this summer due to COVID-19) - Also flush out with hose every 4 months; neighbors who didn't do this (like I told them) had theirs plug up & cost $ to have A/C company;only takes a few minutes (4 including filling gallon jug).
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