Vinyl windows offer one exclusive benefit – Energy TAX CREDIT. Vinyl frame Low-E insulated windows are the most energy efficient windows because unlike aluminum frame insulated windows, vinyl frames do not conduct heat. Currently, there is a tax credit incentive program the pays 30% of your window replacement cost up to $1,500 provided your windows have Vinyl frames and Low-E insulated glass that meet or exceeds the required U-factor (0.30) and Solar Heat Gain Co-efficient (0.30) specifications. Although non-impact vinyl frame insulated glass windows are available, 100% of the vinyl window customers select Hurricane Storm Impact resistant insulated glass. The reason is that this is clearly the most cost effective glass choice. The upcharge for impact glass is far less than the additional cost for hurricane shutters, and you have all the benefits that impact windows offers. (The benefits are discussed on the Hurricane Windows, Storm Windows and Impact Windows pages.) With vinyl impact insulated windows, you have the benefits of energy efficiency, the tax credit , storm protection, security from break-in, no shutters or panels to deal with, light penetration and visibility during a hurricane, and curb appeal for your home.