It s no wonder the vents filled back up after you pumped them out.
Water in floor vents after heavy rain.
I ve stopped water getting into ducts for decades with my linear french drain.
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.
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.
Possible causes and suggestions to alleviate problem appreciated.
Have gotten to estimates on running ducts through ceiling.
In this room the two floor vents fill with water when we get rain.
The water and any accompanying mud must be removed immediately to avoid problems.
One was 5700 the other was 4500.
If there is still a large amount of water in the vents and going on the assumption that the water is from the gutter flood event they need to be pumped out.
You can get a cheap pump connect a garden hose to it and direct the water outside.
During heavy rain or flooding water can get into the ducts causing damage to the ducts and the furnace.
If you see water in any vent you should examine all of the other boots and ducts for water.
The 5700 said they would pour cement through all the floor ducts throughout the house.
One vent has completely corroded on the bottom then and the ground water seeps in and fills that whole section of vents.
The other one said they only fill the actual vents.
If the problem is not too serious you can remove the water with cloths and a wet shop vac making sure you do all areas that you can get to.
How does water get into floor hvac vents during periods of heavy rain.
I had water in my floor vents after a heavy rain last summer.
Was wondering if putting cenemt trough the entire house was necessary and if i need to get additional.
What is the best way to fix this situation.
Remove debris make sure your roof valleys are clear of debris re shingle valleys valleys may need to be reshingled with new ice and water shield put in place.