[DS-21]

***Cheap energy allows us to waste it on hot water tanks while the rest of the world went on-demand a long time ago.

Indeed. Our little Salzburg condo (post-WWII construction) has had a tankless water heater since new. A little thing in the bathroom. It makes a cool whoosh sound when it turns on.

[thunderbrick]

Some things we continue to do very well (pop culture……………... )

 

[Mikeinsacramento]

I've been selling water heaters for 35 years, and I wouldn't touch this with a ten foot pole.