Interesting Patch Found in Customer’s Ducts

Just when you think you have seen everything. Customer calls to get duct cleaning performed in their “new” home. Prior owners said they had the ducts cleaned several years ago by a reputable duct cleaning company. Well, if this is a reputable company, I will say this is the best “patch” I have ever seen on a duct system. I will give them credit (hee hee); they used silicone caulk on the back to “seal” the patch on after they screwed it on.