Big line that runs outside to my A/C is sweating or too much condensation under my house, causing a great deal of water there. It has insulation on it, but is old. What would cause this much water.

Big line that runs outside to my A/C is sweating or too much condensation under my house, causing a great deal of water there. It has insulation on it, but is old. What would cause this much water.

High moisture conditions. Replace insulation to help control condensation.