"When you are in the shower, the hot water from the shower strikes your body and transfers some heat before it falls away. But most of the heat in that water simply goes down the drain. Reportedly, 80 to 90 percent of the energy used to heat water for the shower is lost down the drain."
A drain water heat recovery unit can have a payback period of less than 3 years in some cases.
This article expands on the understanding of the DWHR device which significantly reduces the amount of energy needed to heat incoming fresh water into a home within the home's hot water tank or an instantaneous water heater.
This is the 7th article in a 15+ series of articles on an average home owner's experience with the ecoENERGY Grant program.
In this article, we are introduced to the Drain Water Heat Recovery (DWHR) device as an approach to reducing the energy used to produce hot wate in the home.
