Help! I'm property chairman of a small church. One of our buildings has a brick lined return air duct under the 1st floor concrete slab that is flooding. I pumped out a foot of standing water from this under slab duct last weekend. I spoke to a few old timers, who remember pumping this duct out many years ago. Obviously they never checked on the flooding again, until I noted the problem while replacing some very old and very dirty metal mesh filters on this system - I was washing off the coils, when I noted that the concrete under slab duct was flooded with a foot of water. I have placed a sump pump in the duct, but can only pump down to 1/8 inch, since there is no sump pit. There is also a lot of mud that has settled out on the floor of the duct, that I attempted to wash loose and pump out, but I can only see a small portion of this 100 foot long duct. There is no sign of any mold or other critters growing, and the water was pretty clear before I stirred it up with the pump. I suspect this water is seeping in between the concrete floor slab and the brick lined duct. This HVAC system is run mainly on the weekends for church school and AA meetings, etc. Question: what can I do to clean this water up and prevent it from reoccurring?
- posted
17 years ago