Water In Floor Vents

Clean your vents in warm water and dish soap.
Water in floor vents. Use a dish cleaning tool like a scrub brush or sponge to clean the slats of the vent and other narrow crevices. I have been told to fill the vents with concrete or expanding foam and abandon them lift my furnace tap into the down flow and put a new vent in the ceiling in that room and even get. Not if the water is seeping in through hairline cracks in the slab. No they have standing water and a natural humidifier.
If you see water in any vent you should examine all of the other boots and ducts for water. The water in the ducts can initiate the growth of mold. If it is only in one vent you need to first eliminate the possibility of an interior source such as over watering a house plant a leaking aquarium or someone spilling water nearby. Water in buried heating and cooling ducts can cause serious health problems.
In this room the two floor vents fill with water when we get rain. Each time the heating or cooling system operates the air moving through the ducts can blast millions of mold spores throughout the house. Wet your tool with water apply soap to it and clean each vent. I bought this home 1 yr ago and was a flip home.
What is the best way to fix this situation. Anonymous i have water in my floor ac air vents. One vent has completely corroded on the bottom then and the ground water seeps in and fills that whole section of vents. Only when i run the dish washer and run the washing machine.
Afterwards metal or plastic vents can air dry or be wiped dry with a clean dry rag or paper towel.