Hey guys (and gals)
Living in an historic home I have not wanted to put solar collectors on the roof to heat water. However, I have been thinking of all that heat in my attic. I live in Sacramento, ca and the attic fan, set at 102 degrees, runs at least 7 or 8 months of the year.
I wonder if I looped PEX pipe inside the roof rafters and put a layer of rigid foam insulation on the inside of the rafters i might be able to heat much of my hot water for almost free, at least in the daytime for those months.
Does this seem like a good idea? Whould I have to worry about condensation? What do you all think. What other problems do you all see as possible.
Joe in Sacramento