Washable Electrostatic Furnace Filters - Use While Wet?
I have two separate systems with two washable furnace filters. I
turn off the furnace, wash the filters, and set them outdoors in the
sun for 2-3 hours. Setting them with one corner on the ground helps
drain them quickly. After the 3 hours, I pick them up and swing any
drops out and put them back and turn the system back on.
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