I'm guessing ultrasonic Diffusers may not function well enough for a loft situation (though ordered some beautiful Japanese oil samples to use w/ them at www.at-aroma.com). I did see several industrial-sized diffusers on their site, but they run as high as 1,000 and more.

Currently have several reed diffusers and plenty of incense, but would prefer to have just one or two diffusers, if possible. Considering an electric incense burner as well. Ideas or experience for a larger space?