What if there is no sun?

Standard solar film requires direct sunlight to produce heat. iAIRE’s Solar HVAC film, developed by the
National Renewable Energy Laboratory, utilizes all spectrums of sunlight to generate heat, making it more efficient than
traditional solar film in less sunny climates. Standard solar film is 30% efficient in converting the sun’s light to usable energy;
iAIRE’s Solar HVAC film is 80% efficient.