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I'd like to be able to flush my tankless water heater to remove scale. What type of circulating pump do I need?

— John W. Olver Pacific Grove, CA

Answered by Evan Little on August 18, 2010

I want a hot water circulator that can operate in on-demand mode and timer mode. Do you know of such a thing?

— Rumi Nakano Alamogordo, NM

Answered by Erik Henry on July 8, 2010

Can I use my tankless water heater to supply my heat pump?

— John Gallagher San Francisco, CA

Answered by Tracy Black, PE, LEED AP on July 2, 2010

My electric water heater is in the basement of my two-story house. Do you recommend a tankless water heater under the circumstances?

— Lee Glenn Chapel Hill, NC

Answered by Erik Henry on June 4, 2010

I'm considering replacing my 40-gallon gas water heater with a tankless system in my Southern California home.

— steven Flanigan West Hills, CA

Answered by Gary Shlifer LEED AP+ H, LEED AP+ BD&C on March 12, 2010

Will a water tank before my hot water heater help keep my hot water hotter longer?

— Michael Centanni

Answered by David Bergman on February 5, 2010

Tankless water heaters normally require 0.5 GPM min. flow rates for activation, what if I'm using a 0.5 GPM (max.) faucet?

— Jon Champelli

Answered by Minja Netchiounas on January 14, 2010

Is it possible to combine solar thermal collectors with a hot water on-demand system?

— Francoise LaMonica, Newton, MA

Answered by Ian MacLeod on February 5, 2009

Should we have our tankless water heater installed by a specialist?

— Jess Wren, Los Angeles, CA

Answered by Patrick Sheaffer on January 8, 2009

Can I configure an electric tankless water heater to run a baseboard hot-water heating system?

— Larry Cassis, Brooksville, ME

Answered by Florian Speier on October 3, 2008

 
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