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Around the Home: Simple Ways to Measure and Curb Your Energy Use

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By Liana B. Baker

RISMEDIA, June 19, 2010—(MCT)—For many homeowners, electricity use is highest during the summer—that means steeper energy bills are just around the corner. But a lot of the energy you’re paying for is squandered through air leaks around doors and windows, or through cable boxes and appliances that sap energy when no one is around. Before you shell out the cash for a professional home-energy audit, however, here are some do-it-yourself ways to measure—and then curb—your energy use.

Measure it
The average household will spend about $2,140 on residential energy consumption in 2010, according to the Washington-based Alliance to Save Energy. What’s running up that bill? A home power monitor is one way to find out, said Tom Simchak, a research associate at the Alliance to Save Energy.

Simchak said he purchased one—The Energy Detective, or TED for about $200. It’s connected to his circuit-breaker box and to his Internet router. The monitor records and calculates the cost of his electricity use and sends that information (current and projected consumption, plus cost, among other things) to a small box with an LCD display that he keeps in his living room.

The monitor also sends the information to his laptop, where TED’s proprietary software lets Simchak assess his energy-use history and projected use in greater detail. In addition, the monitor uploads the data to Google PowerMeter, a free online home-energy monitoring tool.

While the power monitor won’t tell you how much energy each separate device is consuming, Simchak said the real-time data makes it easy to figure out. “When you hear the air conditioner click on,” he said, “power consumption goes up by seven or eight times.”

A cheaper alternative that provides information on specific devices’ energy consumption is a kilowatt meter, which measures the energy use of any device plugged into it. You plug the meter into a wall socket and then plug the device into the meter.

The kilowatt meter can’t measure an overhead light or other devices hardwired into your home, but “it’s still a useful tool,” said Reuven Walder, a professional energy auditor in Rockville, Md. Walder said it might surprise you, for instance, just how many kilowatts your cable box uses—it can add up to $30-$50 a year.

Curb it and save
Whether or not you decide to shell out for energy measurement devices, you can save money on your utility bill with some simple steps to reduce your home’s energy use.

A smart strip, for instance, eliminates vampire energy—the energy devices consume when they’re switched off. Smart strips, which retail for about $30, plug into the wall and also work as surge protectors. The strip’s sensor cuts the power to devices plugged into it when they’re switched off.

Next, check doors and windows for gaps around the frames. “Insulation is important any time of year, but in the summer you don’t want to waste all that energy on AC that’s just going to escape through your door,” Simchak said.

Walder suggests looking at windows and doors every season. Many of the air gaps you find can be sealed with caulk or spray foam.

Black and Decker sells a thermal leak detector that shines a red light on walls; the color of the light will change to blue to indicate a hot or cold spot. But Walder said the $50 device has its limits: It can only cover a few inches of wall at a time, so you may not always get a reading of exactly where the air is coming from.

Covering pipes and water heaters with special wrapping is another cheap way to save on energy this summer. Water heaters usually are in basements that remain cool even during the summer, so they must consume energy to maintain their high temperatures. Putting a thermal barrier around a heater helps it work less, and that can save you money.

Walder and Simchak highly recommend buying a programmable thermostat to better regulate your use of your air conditioner, and the heating system in winter.

You can save around 10% a year on energy bills simply by lowering your thermostat by 10-15% for a minimum of eight hours, Walder said.

Little things help
Some other low-cost or free energy-saving moves:

-Put thicker curtains around windows in summer (including in an unfinished attic) to keep the sun out.
-Regularly dust off the coils under your refrigerator so it doesn’t have to work as hard to stay cool.
-Install low-flow faucets (with an aerator so the water doesn’t just trickle out).
-Replace incandescent light bulbs with more-efficient fluorescent or LED ones.

(c) 2010, MarketWatch.com Inc.

Distributed by McClatchy-Tribune Information Services.

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