I have not! https://www.energy.gov/energysaver/water-heating/drain-water-heat-recovery https://www.energy.gov/energysaver/water-heating/drain-water... seemed t

I have not! https://www.energy.gov/energysaver/water-heating/drain-water-heat-recovery https://www.energy.gov/energysaver/water-heating/drain-water... seemed to make a fair amount of sense for me, so if anyone else is curious, there's a link! My plumbing layout actually might be darn near ideal for this. I'm not super keen on spending another thousand or so on getting it installed - at least not prior to the "planned but not scheduled" bathroom remodel, but that is at least worth considering when we do do the major remodel and complete bathroom reconfiguration. Our master bath is on the first floor and we don't have a finished basement so making something like this work should be comparatively easy. Thanks for the idea!