If you've noticed dirt coming from your floor air vents, water sounds in the ductwork, or unusual smells, the inground air ducts need to be inspected. Ductwork in the concrete foundation can be in serious stages of deterioration. Enviro Duct Seal can resolve the problem beginning with a video inspection of the entire duct system. Air Duct Lining can solve the problem and is fast and efficient and carries a 15 year warranty on the duct sealing process. Call (866) 588-3828 for a consultation and video inspection of your ductwork.