Which is more efficient
I have a heat pump water heater and ultra low flow plumbing fixtures. To get a comfortable shower temp I have the hpwh- set at 135. It still could be warmer for my taste but the faucets are already really hot. The distance of pipe is close to the same and I am pretty sure it is the way shower head distributes the water. If I installed a point of use electric water heater for the showers and turned the hpwh- down to 100 would I use less electricity?
The setup would be hpwh- 100 to house and POUWH- 135 to showers as a booster off the 100 degree hot water line. I am all electric and max flow of shower heads are 1.5 gal with flow control to reduce when soaping up.
I don't mind upgrading but don't want to increase electric usage. The goal is to reduce as much as possible. The rest of the house only needs warm water. We use a HE washer on cold and the dishwasher has its own heater.
This post was edited by Energywise.ks on Thu, Jan 9, 14 at 21:20