Foam covers for hot water lines, necessary
My parents place used to have these foam covers that go over the hot water lines (presumably to prevent temperature loss from tank to faucet), at least in the basement where I could see. When my SO and I bought our house I noticed that the hot water lines did not have the foam covers.
Would it be wise to invest in some covers? What is the potential temperature loss in the water from tank to faucet if left uncovered?