Grey Water w/Heat Recovery
Green Children's Book
Forced Hot Water
Bob Gagnon Plumbing &
Heating - Radiant Heat Specialist
Grey Water - Heat Recovery System
I am currently installing this system in my house which will have a conventional
Grey Water system, where I run my shower water to a 120 gallon tank, where it will
be chlorinated, filtered, and recycled to be used for flushing my toilets.
I will install a large copper coil into the grey water tank to pre-heat
the incoming cold water before it goes into my water heater. In the winter the
incoming cold water gets as cold as 36 degrees, so with 90-100 degree shower water
pouring over the coil of incoming cold water, I hope to pre-heat it to around 66 degrees.
Thatís 30% on the domestic hot water! I feel that savings and the 40 to 50% savings
on my water bill make this a worthwhile project.