Re: hot water takes too long
I saw the episode years ago. I think one of these is what you're looking for:
I don't know just what exact product Richard used, but these works the same way. Install under the sink furthest from the water heater, plumb into the existing hot & cold water lines. The pump also needs power; if there is an outlet above the vanity, you may be able to fish a wire through the wall from that outlet into a new outlet in the vanity cabinet.
When you push the button, the pump is activated and it draws cooled-off water from the hot line and backfeeds it into the cold line until the hot water reaches the pump, at which time it turns off.
(P.S. -- You may notice some similar but less expensive options. Those other options are the pumps only; they don't include the plumbing kit which you'll need in order to hook it up.)
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.