The Dust Free Duality UV is a compact UV light made for tight spaces such as ductless and mini split systems. It utilizes dual-spectrum UV technology to enhance the sanitization of surfaces and includes a VOC filter to provide additional cleaning capabilities. The Duality UV can be installed quickly in many locations throughout Port St. Lucie homes, and it makes it easy to take the next step on indoor air quality. Lucie. Lucie homes and helps address indoor air quality issues common in our humid climate, helping reduce viruses, bacteria*, and airborne contaminants.