The federal government is encouraging homeowners to purchase components for their homes with higher energy-efficiency. To do so, the government is offering a reduced cost of certain upgrades by tax crediting those components that qualify. However, there is a time limit that expires at the year's end.

A list of examples include:

Windows, Skylights and storm doors (credit 10 percent of the cost of materials up to $200)

Roofing (10 percent of the cost to install an Energy Star certified metal roof)

Insulation (10 percent of the cost of materials up to $500, must meet the 2004 IECC)

Water Heaters (credit $300 for certain high efficiency models)

Solar Power (credit $2,000 up to 30 percent to install a photovoltaic system)

Heating and Cooling Systems (credit $300 for qualified AC and heating units)

for more information visit, www.energystar.org