The 2009 American Recovery and Reinvestment Act reinstated Federal tax credits for consumers who make certain energy-efficient improvements to their homes. This bill extended tax credits for energy efficient home improvements, such as energy saving window film.

Under section 25C of the Internal Revenue Code (I.R.C.), homeowners can receive a 30 percent credit on the costs of "qualified energy efficiency improvements," including Sunlight Solutions' solar control window film on windows, doors, and skylights. This tax credit applies only to improvements made to a primary residence from Jan. 1, 2009 through Dec. 31, 2010.

A tax credit is generally more valuable than a tax deduction because a tax credit reduces your tax dollar-for-dollar, while a deduction only removes a percentage of the tax that is owed. If you can itemize energy-related purchases on your federal income tax form, it will lower the total amount of tax you owe the government.

Homeowners can receive a 30 percent credit on the cost of the window film, up to $1500. Installation costs do not apply, only the cost of the film. This credit is in addition to any previous credit used.