No one has mentioned this yet. Maybe newer buildings don't have them due to the new tankless water heaters but if you work in an older building like I do, the building will have hot water tanks. Most tanks contain fifty gallons each.

Jeanette Isabelle
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I'm not sure whose twisted idea it was to put hundreds of adolescents in underfunded schools run by people whose dreams were crushed years ago, but I admire the sadism. -- Wednesday Adams, Wednesday