Quote:
Originally Posted by Daox
Well, you could install it right under the shower and have it preheat your cold water going to the shower. That would work perfectly. I highly doubt you can take a shower before a drop of hot water goes down the drain. 
I wish they had efficiencies listed though. Almost all the other sites require the unit to be installed vertically to create a thin film around the outside of the drain pipe and thus more surface area to transfer heat from. I'm curious as to how they get around this on the horizontal design, or if its just less efficient. |
These systems are doing ok, but the efficiency is below 40% at best. They are placed vertically, because of such rules for sewage drains setting up - either vertically or horizontally under a slope of 1.5 degree.
I think that is placed vertically to be able to avoid blockage