Solar Attic Fans and Skylight Tubes from U.S. Sunlight Corp Solar Attic Fans

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Chroma Skylight Tube Energy Efficiency Information

Chroma Skylight Tube


U-Factor rating

A U-Factor rating determines the amount of heat that is lost through an object. The lower the number, the better the insulation value. As a basis for comparison, a double-pane window typically receives a 0.4 U.S./I-P.


The Chroma Skylight Tube 2014ST is given a U-Factor of 0.3 U.S./I-P by the National Fenestration Rating Council (NFRC), better than a typical double-pane window.



Solar Heat Gain


Solar heat gain measures how well a product blocks heat caused by sunlight. The lower the light tunnel’s solar heat gain coefficient, the less solar heat it transmits into the house.


The Chroma Skylight Tube is given a solar heat gain coefficient of 0.2, one of the industry’s best ratings. Minimize solar heat gain and maximize energy savings with the Chroma Skylight Tube’s double–layer roof lens, creating a dual pane effect.




Cold Climate Lens Kit

The Optional Extreme Cold Climate Lens Kit, available exclusively for the Chroma Skylight Tube 2014ST includes 2 additional lenses to further reduce energy loss. View more or call 1-877-50-USSUN for additional information.

U.S. Sunlight Corp is the leader in design and manufacturing of solar attic fans, solar attic fan, solar powered attic fan, attic fan, attic fans, skylight tubes, tubular skylights, roof vent, roof vents, attic ventilation and solar attic ventilation, solar roof vents, gable fans, solar gable fan, solar gable fans, solar controller, solar attic remote control, attic heat removal, solar attic vent, solar attic ventilation, solar powered attic ventilation, and daylighting products. Remove heat from your attic and maintain a cooler house while removing moisture from your attic space and building materials. All products come with a manufacturer's warranty and have federal and local tax credits available.