Germ Guardian UV-C Room Air Purifier

I purchased the Germ Guardian UV-C Room Air Purifier on the recommendation of a friend. He became ill every trip he made in his second-hand motor home, the apparent culprit being moldy carpet. Using the Germ Guardian (and before replacing the carpet) in the motor home, he made several weekend trips without problems. In Southeast Texas we have very warm, very humid air, and molds thrive everywhere. Allergic to mold, I purchased the Germ Guardian to minimize my exposure. I have not had an allergic reaction for a month, since activating the Germ Guardian in my home. This model treats a limited space, but seems adequate for my tiny 500 sq. ft. apartment, where I have it centrally located to affect all rooms equally.