Spend your tax refund: Green
By investing in new thermal windows, insulation or more efficient heaters, you will save a bundle on your energy bill. In fact, replacing old windows can save up to $465 per year in energy costs alone. And if you invest in major energy-saving systems, like solar panels or a geothermal heat pump, you can get 30 percent of the price back on next year’s taxes.
Crunch the numbers: Use the calculator at ehow.com to learn how much replacing one, two or all of your windows will save you over time. At energystar.gov, find even more incentives for energy-saving items.