If You Were Plumbing, How Much Beer Would You Hold?

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If You Were Plumbing, How Much Beer Would You Hold?

You open the hot-water tap. Then you wait for the hot water to flow. How long? (Too long, according to most people, I say.) The time depends on flow rate, the amount of water in ...

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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]

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Water Saving Gadgets Make a Splash

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July 01, 1998

The National Plumbing Standards passed by Congress in 1992 as part of the Energy Policy Act marked a turning point for U.S. manufacturers of toilets, faucets, and showerheads. [continue reading]

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Multifamily Research Gets in Hot Water

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July 01, 1997

Many plumbing and heating designers have considered the tankless coil heating system to be the least efficient method of heating domestic hot water (DHW) in a multifamily building. [continue reading]

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Hot Water in the Hereafter

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July 01, 1997

The technology to increase energy savings and improve the performance of domestic hot water (DHW) heating systems has been around for years. The problem is that few people know what's out there and even fewer are getting to use it. [continue reading]

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Air-to-Water Heat Pumps for the Home

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July 01, 1997

Over a third of America's domestic hot water is heated by electric resistance elements. For many residences, electric resistance is a more expensive method of water-heating than fossil fuels or solar, but there are buildings where these latter alternatives aren't feasible. [continue reading]

Updating Existing Windows with Window Film Offers More Immediate Benefits

Darrell Smith, IWFA

Updating Existing Windows with Window Film Offers More Immediate Benefits

To save money on a building’s energy costs, window replacement may not be a smart move, according to ...

100,000 Home Energy Scores So Far And Counting!

US DOE's Home Energy Score

100,000 Home Energy Scores So Far And Counting!

DOE’s Home Energy Score™ is a tool for homeowners, homebuyers, and renters that estimates home energy use, ...

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