The Elusive Search for an Energy-Efficient Water Heater

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The Elusive Search for an Energy-Efficient Water Heater

My Sunday kayak adventure with my wife and friends on Lake Tahoe was magic. Paddling that beautiful lake relaxed me to the point where, by the time I reached home, I was ready for a ...

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Converting From Steam To Hot Water

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July 01, 2009

Q . Is it feasible to retrofit cast-iron single-pipe steam radiators to work on hot water from a new combined heating/domestic hot water (DHW) system?  And if so, would it ever make sense ... [continue reading]

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Looking for a Comfortable Low-Flow Shower Experience

Author: Gary Klein
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May 06, 2009

 Q. John Koeller notes how the plumbing industry has taken advantage of the lack of any prohibition against multiple head and body spray luxury shower installations resulting in many very high flow installations (“... [continue reading]

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Danger in the Shower: 2008 Forum Looks at Hot Water

Author: John Koeller
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January 02, 2009

On average, water heating accounts for 15% of residential energy consumption. In the past few years, there has been an explosion of interest in meeting domestic hot water needs more efficiently. New hot-water-generating technologies, structured plumbing ... [continue reading]

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A Cute Water Heater

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November 06, 2008

Yes, there are cute water heaters. ECO-CUTE is a Japanese trademark and nickname for heat pump water heaters that use CO2 as a refrigerant. (Cute is the pronunciation of “hot water supply” in ... [continue reading]

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Naturally Circulating Hot Water System

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September 07, 2008

Steve Greenberg is a facilities energy management engineer at Lawrence Berkeley National Laboratory and a technical editor at Home Energy. Q: I have been having a discussion with a fellow worker concerning our house heating ... [continue reading]

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Kansas City's Water Heaters

Author: John Quimby
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July 01, 2008

I work for Neighborhood and Community Services in Kansas City, Missouri, in the Minor Home Repair and Weatherization program. I have worked in weatherization since 1986, and performed energy audits prior to that in Fairbanks, Alaska. ... [continue reading]

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Drain Water Heat Recovery Devices

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May 01, 2008

Drain water heat recovery (DWHR) devices are little-known but effective means to save hot water energy and homeowner dollars. [continue reading]

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Testing a Dual Water- and Space-Heating System

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January 09, 2008

I tested a dual system for domestic hot water and space heating in a home where a furnace and ductwork were previously used for space heating. [continue reading]

Energy Innovation

Rick Barnett

Energy Innovation

Space conditioning is the biggest piece of the residential energy pie, and thermal shell improvement is a homeowner's best opportunity ...

The Future is Now—Or At Least Nearer with ORNL’s 3D-Printed House and Car

Marlene Taylor

The Future is Now—Or At Least Nearer with ORNL’s 3D-Printed House and Car

Energy supplies and efficiency in new home construction took an interesting turn when researchers at Oak Ridge National Laboratory (ORNL) ...

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