Hot water tank / Green Building & Sustainable Home Renovation Information & Advice

A  copper drain water heat recovery unit in a residential plumbing stack.
Hot water

Drain Water Heat Recovery: Efficient Energy Recycling

...water heater only: The preheated water is fed into the cold water inlet of the water heater. Preheating the shower only: The preheated water is sent directly to the cold side of the shower's mixing valve. The balanced approach: The preheated water is split, feeding both the water heater and the shower's cold water inta...

An 8-gallon unit can often suffice for households with low-flow fixtures and qui
Hot water

Sizing hot water tanks, why smaller is often smarter

...water heater? Another important point is to be intelligent about where you site your hot tank or hot water heater. As a hint, the closer it is to the primary place you use hot water, the better, so in the example we're using here, the original dinosaur of a 60 gallon hot water tank was in the basement and about as far ...

Water efficiency
Plumbing and water heaters

How to save money on your hot water bills

...water heat recovery Grey water heat recovery drain pipe © Ecohome Grey water heat recovery is a system that runs your hot water intake through thin copper pipes wrapped around your shower drain, so the water feeding your hot water tank is preheated by the hot water going down the drain. The model shown above with a v...