LANCASTER, PA. — Hot water recirculation for domestic water systems has created a lot of buzz these days, spurred primarily by consumer demand for hot water instantly at the tap. Recirculating hot ...

Pablo Päster is an energy and sustainability management consultant who wrote a weekly advice column for Treehugger from 2009-2012. Dear Pablo: I am considering getting a hot water recirculation pump.

Q: I am having a problem with hot water in my 2-year-old house. My bathroom and water heater are located on opposite sides of the house, and I have to wait forever to get hot water for a shower. I ...