Cut your energy bills in half

Yes, really. These five leak-plugging, warmth-trapping, efficiency-enhancing ideas could slice your home's energy usage by up to 50 percent.

Replace old appliances
Replace old appliances
Most major appliances (such as refrigerators and dishwashers) that are more than 15 years old are major energy wasters - and likely worth ditching in favor of this year's models. No need to guess, though. See for yourself with a gizmo called Watts Up? ($100 for the standard model).

Just plug any of your existing appliances into the thing, and it will calculate the machine's annual electrical consumption. Compare that number with electrical usage ratings on new products at energystar.gov and you'll know precisely whether upgrading is worth the money.

Annual savings: $50 to $150 on electric bills per machine.

Up-front cost: About $500 to $1,500 per machine.

Quick Fix: Compact fluorescent bulbs (costing about $5 each) could save you about $5 each annually. The biggest problem with fluorescents is that their bluish light can make even the healthiest homeowner look ready for his last rites.

To minimize the operating room glare, says Jeff Miller, president-elect of the International Association of Lighting Designers, buy only name-brand bulbs that are labeled "soft" or "warm" light. Keep in mind that wattages are different than you're used to: The GE 26-watt compact fluorescent bulb, for example, gives off as much light as a 100-watt regular bulb.

Upgrade

Patch

Seal

Insulate

Replace
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Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.