A building can only be energy-efficient to the extent that its windows are energy-efficient. In the summer here in Gainesville Florida, windows allow too much heat to enter, forcing cooling systems to work harder and making cooling costs climb. But in winter, they allow too much heat to escape, forcing heating systems to work harder and making heating costs climb.

Historically, most window films have provided only a summer solution - a solution for only part of the year.

In summer, EnerLogic keeps the heat out, like traditional reflective window film. But in winter, EnerLogic does what reflective film can't do: It locks the heat inside. So you get a perfect balance of energy efficiency, comfort, and cost savings - all year long.

And EnerLogic does this with outstanding optical clarity that's fully compatible with high-efficiency lighting. It looks great in any light.

Putting this unmatched insulating performance to work, EnerLogic is able to transform existing poorly-insulating windows into energy-efficient windows. The insulating power of EnerLogic gives single-pane windows the annual insulating performance of double-pane windows - and gives double pane windows triple-pane performance.(4)

To get such improvement in performance from a thin, transparent window film is impressive - and much more affordable than window replacement.