Good riddance to incans. LEDs are vastly superior in every meaningful way.
How well do they warm your pipes if you put them under your house in a severe freeze?
Interesting use of lights - I don't think I have ever used lights for that purpose. I would much prefer to use heat tapes, or let the faucets drip....
Hahaha! Of course not- you live in California! Don't you folks panic when it gets down to 45?

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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman