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Windows

November 12, 2009

The MythBusters look at destructive force of hurricanes

Mythbusters Hurricane WindsYou might not be able to fool Mother Nature, but based on an episode of MythBusters that ran last night on the Discovery Channel, it might be possible to at least work in conjunction with her.

With Hurricane Ida in the news and preparing to make a mess of the weather on parts of the country even as it was downgraded to a tropical depression, MythBusters aired its "Hurricane Windows" show, in which hosts Adam Savage and Jamie Hyneman investigate whether you can lessen the damage caused by a storm by leaving windows open on a trailer or a home.

In typical MythBusters fashion, Savage and Hyneman pulled out all the stops to determine the veracity of the myth, even using the University of Florida's wind machine to create hurricane-force winds. No spoiler alert here: Watch the different parts of the episode on the show's site to see what happens. (The screen shot shows the duo observing a trailer getting battered by Category 2 winds.)

The 2009 Atlantic hurricane season, which wraps up at the end of November, has seen lower-than-normal activity, as noted in our August storm-season update and as reported on Weather.com: "2009 will go into the record books as a very uneventful hurricane season, except for late season Ida." To be prepared for a weather-related event no matter when it happens, use the advice on our Storm & Emergency Guide.—Steven H. Saltzman | | Twitter | Forums | Facebook

Essential information: We haven't tested roofing shingles or siding for their ability to withstand hurricanes or tornadoes, but our reviews of these building materials can help you find products that will look good and last. Watch our video on how we test shingles.

November 11, 2009

By the Numbers: Energy Star homes reach major milestone

1 million

Number of Energy Star-qualified homes built nationwide since the program debuted in 1995. These homes have saved Americans $1.2 billion in energy costs, reduced greenhouse-gas emissions by 22 billion pounds, according to the U.S. Environmental Protection Agency. The top 10 markets for Energy Star homes are Houston, Dallas, Las Vegas, Phoenix, Los Angeles, New York City, Tucson, San Antonio, Sacramento, and San Diego.

To qualify for Energy Star, says the EPA, a new home must be at least 15 percent more efficient than homes built to the 2004 International Residential Code and include other features that make them 20 to 30 percent more efficient than standard home, such as effective insulation, high-performance windows, and efficient heating and cooling equipment, appliances, lighting, and ventilation. (The image below, from Energy Star, shows typical locations of air leaks in a home. Check out our recent Weekend Project on weatherizing your attic.)

"This is an amazing achievement for the Energy Star program, but the real winners are the 1 million American families who have the chance to save money and keep harmful pollution out of the air. That's great news for anyone who wants to cut costs and protect our planet," said EPA Administrator Lisa P. Jackson in a press release. "We're going to keep the number of Energy Star homes growing, because every new Energy Star home is a step towards lower costs, cleaner air, and communities that are environmentally and economically sustainable."

To boost the energy efficiency of your home and save some real money, start with these simple, inexpensive steps and follow our overall advice for using less energy at home.—Celia Kuperszmid Lehrman | | Twitter | Forums | Facebook

Essential information: If you haven't done so already, get your heating system tuned up and install a programmable thermostat. Also refer to our buyer's guides to furnaces (more details here), water heaters, pellet stoves, and solar water heaters, and find the best compact fluorescent lightbulbs. Remember, some projects might qualify for federal tax credits. If you want energy-efficient appliances, stay up on the news related to the $300 million State Energy Efficient Appliance Rebate Program, also known as cash for clunkers for appliances.

Air Leaks Energy Star Homes
 

October 9, 2009

10 Questions for . . . Jack Hidary, Chairman of SmartTransportation.org

In this installment of 10 Questions for . . . , Senior Editor Daniel DiClerico speaks with Jack Hidary, chairman of SmartTransportation.org, which brings together various organizations seeking innovative transport solutions. Here, Hidary talks about the inspiration behind last summer's Car Allowance Rebate Program (cash for clunkers), the $300 million State Energy Efficient Appliance Rebate Program, and why he's now focused on making American homes more energy efficient through the PACE (Property Assessed Clean Energy) bond program. As always, the responses below are the opinion of the interviewee.

Cash for Clunkers for AppliancesYou're an entrepreneur with a background in finance, technology, and medical research. What turned you on to energy efficiency?

I love taking an idea from the back of a napkin to a full-fledged company. In 2001, I built an energy practice that exposed me to the inefficiencies of fossil fuel. Take coal. By the time you go from the coal mine to the processing plant, over the power line and into the home, you're left with around 15 percent of the original energy. That's an enormous waste. Then there are the health and environmental issues related to carbon emissions, not to mention the economic and national-security issues related to our dependence on fossil fuels.

How did that translate into cash for clunkers?

In 2005, I spearheaded the effort to change the taxicabs in New York City to hybrid vehicles. Today, 25 percent of the city's fleet are hybrid, and the rest will so be in two to three years. The success in New York got me thinking about the roughly 250 million cars in the rest of the U.S. I realized that there needed to be an incentive to accelerate their turnover, especially since the average age of our vehicles has gone from seven years to 14 or 15 years. When I was growing up in Brooklyn, our local utility had a program that gave rebates for trading in an old air conditioner for a new unit. That to me was a great model for what we needed to do with cars. So I put together some ideas for a cash-for-clunkers program and presented it at the 2008 Clinton Global Initiative.

Jack Hidary Cash for Clunkers PACE BondDo you think cash for clunkers will have a long-term impact on our culture?
There's now an entire set of programs based on clunkernomics, or the notion that efficiency makes good economics. During cash for clunkers, people walked into their dealership with a totally different mind-set. They weren't just looking at the transaction value of the sticker price but also at the cost of gas and maintenance. They understood that if a car is $500 less on the sticker but costs $2,000 more each year to operate, that's a bad deal. In technology, we call this total cost of ownership. The concept has been around for years, but it's entered the consumer lexicon, and moved well beyond cars.

The U.S. Department of Energy recently kicked in $300 million for cash for clunkers for appliances. And I just had an e-mail from a leader in computer-data centers, which suck up about 2 percent of the country's electricity. She's proposing a cash-for-clunkers program that would help swap out these massive servers for more efficient ones.

Why have you turned your attention to buildings?
We're hoping to catalyze the same paradigm shift in how people buy and maintain homes. The built environment—houses, apartments, commercial buildings, warehouses, etc.—is responsible for 40 percent of the nation's energy use. The average American household uses 50 percent more energy than the average Italian household. So there are a lot of things we can do to make buildings more efficient.

We have better windows and lighting and ways to harness solar power. These things all have great payback, but they also cost a lot to buy and install. Enter two guys from Berkeley, California, named Cisco DeVries and Dan Kamen. They came up with the model for a bond-based financing mechanism that would give people loans to pay for their energy retrofits and solar. They approached me and several other folks with the idea. We looked at it and decided to take it to scale through the formation of the PACE Now coalition. We're predicting that the program will stimulate up to $500 billion in business over the next decade.

How does a PACE bond work?
PACE stands for Property Assessed Clean Energy. It's very simple for consumers to access. They apply for a loan from their city or municipality, say $20,000 to replace the windows, lighting, and central air conditioning. The city issues a PACE bond and then lends the money, which the borrower pays back over 20 years via a surcharge on their property taxes. That's plenty of time to break even on the energy retrofit and solar installation, and consumers still qualify for federal energy tax credits, saving them even more on the project.

See the Full Article

August 11, 2009

Prince Charles turns his Highgrove into an eco-friendly estate

Prince Charles Highgrove Estate Environmental ConcernsRed, gold, and purple are among the colors associated with the English monarchy, including today's House of Windsor. But Charles, the Prince of Wales, has added another color to the palette at his country estate: green.

The prince, known for his efforts on the environmental front, cut greenhouse-gas emissions at his 37-acre Highgrove estate in Gloucestershire (shown) by 18 percent from 2007 to 2008 and will use more recent savings and a carbon-offset program to make himself carbon neutral, according to this story from the Telegraph. Here's how the prince became a pauper on the polluting front:

• Eco-friendly insulation and energy-efficient windows were installed to cut heat loss. Solar panels and wood-chip boilers were installed to provide electricity and heating. (Look for our report on solar water heaters and pellet stoves in the October 2009 issue of Consumer Reports, online and on newsstands later this month.)

• Rainwater is now used for the toilets (report and ratings available to subscribers) and irrigation.

Ground- and air-source heat pumps were installed provide heating and hot water.

• A green-energy supplier provides the balance of electricity needed for the estate.

• Staffers are encouraged to bicycle to work or drive hybrids. The prince's Aston Martin is fueled by waste leftover from wine production.—Gian Trotta | | Twitter | Forums | Facebook

Essential information: Learn how to save up to $2,000 a year on your energy bill. See how the Google PowerMeter and Microsoft Hohm can help you analyze and optimize your home energy use. And read more about Highgrove in this post on Treehugger.com.

August 1, 2009

By the Numbers: Energy-efficiency investments would pay huge dividends, says McKinsey & Company report

$1.2 trillion

How to Caulk a WindowAmount U.S. consumers and businesses could save by 2020 by boosting their energy efficiency, according to "Unlocking Energy Efficiency in the U.S. Economy," a new report from management consulting firm McKinsey & Company. (The report covers nontransportation energy use.)

Under current conditions, the United States wastes more energy each year than Canada consumes. Our nearly 130 million homes, many of which lose energy to leaky ductwork, underinsulated attics, and inefficient appliances, account for roughly 35 percent of the potential energy-efficiency gains, says the report. (You can make your old windows less drafty by caulking gaps, as shown. And use a programmable thermostat to boost your household-energy savings.)

As the report details, an initial investment of $520 billion would be needed to reduce annual energy consumption by 23 percent by 2020, which translates into $1.2 trillion in savings and an end-use reduction of 9.1 quadrillion British thermal units.

Those savings are key, because worldwide energy use is projected to soar over the next two decades, according to the U.S. Department of Energy's Energy Information Administration. The EIA says energy use will reach 678 quadrillion Btu in 2030.—Daniel DiClerico | | Twitter | Forums | Facebook

Essential information: Pinpoint the biggest energy savers and energy hogs in this report on residential energy use. If you're in the market for new appliances, use our free buyer's guides to find the most-efficient washing machines, dishwashers, refrigerators, and air conditioners in the Consumer Reports ratings. And learn more about weatherization.

March 21, 2009

Warning labels on glass cleaners are hard to see

Glass cleaners make it easier to see through windows, but you might strain your eyes to read their warnings about potential dangers to children and pets.

Manufacturers of glass cleaners aren't required to put such information on the outside of their containers. Some place the warnings there voluntarily, but others place the warnings on the back of the front label, requiring you to peer through liquid—some have that distinctive blue color, though that's not the only hue—and you might also have to read around the bar-code sticker.

Read the rest of this story on ConsumerReports.org.

February 24, 2009

By the Numbers: Americans prefer energy-efficient homes, says NAHB survey

91

Percentage of U.S. consumers who would prefer to buy a home with energy-efficient features over a less-efficient home that's 2 to 3 percent cheaper, according to the latest National Association of Home Builders Consumer Preferences Survey. Seniors are the group most interested in energy-efficient homes—those with, for example, the proper quantity and type of insulation, double-pane windows, Energy Star-qualified appliances, and water-saving fixtures. "It's all about the pocketbook," says Gopal Ahluwalia, vice president of research for the NAHB. "When income shrinks after retirement, people become more interested in lower overheads." Ahluwalia also notes that last year's spike in energy prices heightened awareness of energy efficiency among all the different age groups surveyed. "The cost of energy will play a big role in the changing housing market," he says. So maybe the tie will go to the dolphin after all.

January 22, 2009

Energy efficiency, retrofitting homes take center stage at 2009 International Builders' Show

Energy efficiency has been a theme of past editions of the annual International Builders' Show, but there seems to be more urgency to the conversation this year. That might have to do with the fact that President Barack Obama's stimulus plan contains several key provisions aimed at green building, including the weatherization of existing homes.

As part of the International Builders' Show Green Day on January 21, the National Association of Home Builders held a press conference on energy efficiency. The panel of industry experts argued that remodeling and retrofitting the nation's oldest homes will have the greatest impact on overall energy consumption, more than the adoption of green-building practices to new construction. "We obviously can't solve the problems by tearing down all our inefficient housing stock and replacing it with new," explained Ray Tonjes, chairman of the NAHB's Green Building Subcommittee. "We need to make some significant improvements to our existing homes."

Besides saving energy, boosting efficiency by retrofitting homes could lead to more green-collar jobs. NAHB-backed initiatives are already under way to help train workers. That should be good news to the Obama administration, which hopes to stem growing unemployment by creating millions of new jobs.—Daniel DiClerico

Essential information: Read our advice on weatherization and product reports on programmable thermostats, tankless water heaters, and windows.

October 20, 2008

Q&A: Is it a worth the extra cost to buy windows filled with argon gas?

Qaquestionmark The replacement windows I'm considering buying come with the option of using argon gas to boost their energy efficiency. Should I spend more to get the argon gas?

It is generally not a good investment to replace windows just for energy-efficiency purposes. But if you need to replace irreparable windows or are undertaking a home remodel, then consider the incremental costs of higher-efficiency replacement windows over models without such features as specialty gas fills, including argon, or low-e coatings.

Replacement_windows Large incremental costs for these options generally outweigh their benefit. Argon, for instance, typically increases the insulating R-value of a window by only half a point. (Insulated-glass windows, also called double-pane glass, typically have an R-value of around 2.0 to 3.0. R-value is the measurement of thermal resistance; the higher the number, the more efficient the window. Learn more about the energy performance of windows.)

This small increase in insulating value from the argon gas will get you slight energy savings, but the additional initial cost could significantly extend the payback time for the windows. What's more, the argon does little or nothing to reduce transmission of ultraviolet and infrared radiation. UV light from the sun can damage your furnishings but, more important, infrared radiation transfers heat into or out of a home. Studies have shown that windows with a low-e coating can measurably reduce solar heat gain during cooling season (assuming you do not draw curtains or blinds anyway). However, homes in cold climates tend not to see a benefit from this option.

It's worth noting that many manufacturers of high-quality windows, including all those we tested for our latest report on windows, now use argon-filled glass as the standard for their windows. In fact, some companies might charge you more if you want windows with glass that provides less insulation, including models with only air-filled glass or with no low-e coating.

Essential information: Learn how to choose the best windows, understand the different window types and designs, and find an expert installer.