Got an older home,pier&beam where previous owner replaced all steel plumbing with PVC. It's a zoo underneath but I will redo soon. It takes forever to get hot water to the faucets THEN after getting it, you turn it off for a minute or so and it takes forever to come back. Like the hot water is not staying at the faucet. Whats up, where is it going.
What do you mean by "its a zoo underneath"? Are you on a crawlspace? Are you in a cold region? Maybe the pipes are in an uninsulated wall?
Something is making them cool down rapidly between the water heater and the faucet when you turn the faucet off. Unless you turn on the faucet and air comes out, the water isn't going anywhere, its just cooling down in the pipes.