Renee wrote:

The gas line connection to my dryer has what appears to be some sort of mineral deposits growing on the ouside of the coupling. It looks like off-white, delicate crystals. The connection is only a year old and was professionally installed. Is this dangerous?

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Could just be residue from when the connection was leak tested after installation… assuming that it was, in fact, leak tested. These days, you just never know. I’ve seen so much freaky shi’ite out there that I don’t assume anything anymore.

Post a photo of what you’re looking at and I might be able to comment further.