Quote:
Originally Posted by KeepingItReal
Quote: I assume this applies only to houses where the copper lines and condensate line are together in a conduit under the slab. Some houses have the copper lines run up the outside of the house and in through the attic and down into the air handler. This is the case in some instances where older units are replaced. The condensate line remains in the under slab conduit so any leakage would not effect working copper lines. I believe there are other problems with running the copper lines through a conduit under the slab.
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Probably so but even on those units with the copper lines up the wall the Sun Kool tech told us not to use vinegar to rinse out the drain line as it can also dissolve the glue in the pvc joints but I had never heard of that before. Have worked with a lot of PVC but never had an occasion to run vinegar through it before so I am not sure whether it possibly will or will not dissolve the glue in the joints. Acids in the concrete could also damage copper if it is in contact with it. [/QUOTE]
Those Sun Kool techs should get their information checked. A Sun Kool tech advised me to use vinegar. I think I will stick to soap and water.