[Greenbuilding] whole house DHR retrofit

Haudy Kazemi kaze0010 at umn.edu
Sat May 14 16:07:36 PDT 2011


Hello,

Are there any "best practices" for whole house drain heat recovery (DHR) 
retrofits?  By whole house, I'm also including the basement drains that 
serve basement bathrooms and laundry.  Sometimes upper floors also drain 
into pipes that are embedded into the basement slab.

Is a small catch basin + sewage sump pump that lifts the drain line to 
drop back through a DHR a viable solution?  This would ideally include a 
overflow bypass in case the sump pump fails for whatever reason.

Any comments/opinions are welcome.

Thanks!

-hk



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