Editorial: The Rising Cost of Water

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Editorial: The Rising Cost of Water

Using It and Flushing It

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Money Down the Drain: Controlling Hot Water Recirculation Costs

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November 01, 1999

Energy use for domestic hot water (DHW) is the second largest component of a multifamily building's energy budget; it is surpassed only by heating in cold and mixed climates. [continue reading]

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Fuel Use in Multifamily Buildings

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November 01, 1999

Multifamily buildings with more than five units make up about 17% of all U.S. housing, yet scant information exists on the fuel use of these building in specific locations (see "Multifamily Statistics"). [continue reading]

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Ground Source Heat Pumps Dig In

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September 01, 1999

Ground source heat pumps (sometimes called geothermal heat pumps, Geo-Exchange Systems, or GHPs) most often exchange heat with the ground by means of a ground heat exchanger. [continue reading]

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Calculating Water Heater Energy Use

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July 01, 1999

Have you ever wanted to calculate how much energy a water heater would use annually in a given household? To make this task easier, Lawrence Berkeley National Laboratory (LBNL) has developed a straightforward equation that produces results close to those of simulation programs--without their baffling complexity. [continue reading]

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Making Solar Hot Water Affordable

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January 01, 1999

In 1995, a group of agencies in Florida teamed up to bring low-cost solar systems to low-income households so they could save money on their utility bills. [continue reading]

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Hot Water Improvements Top Warm Climate Weatherization Measures

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September 01, 1998

Reducing hot water costs is the most cost-effective way to save money for low-income housing in warm climates. This is one conclusion that can be drawn from a new study on the cost-effectiveness of energy-saving measures for low-income housing in warm climates. [continue reading]

How Your Refrigerator Has Kept Its Cool Over 40 Years of Efficiency Improvements

Marianne DiMascio

How Your Refrigerator Has Kept Its Cool Over 40 Years of Efficiency Improvements

One of the great inventions of our time—the modern refrigerator—will get an efficiency makeover when new ...

Rob Nicely, Warrior for Sustainability

Tom White

Rob Nicely, Warrior for Sustainability

I was first impressed by Rob Nicely when I heard him speak these words to an audience of builders, designers, ...

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