Every space with odors tends to be somewhat unique. The source of the odor, as well as how deeply embedded it has become, is just as important as the actual size of the space. Some areas can be treated in a short period of time, whereas other areas of the same size will take longer.
The Odor-Free models are versatile in that running a model with less ozone output for a longer period of time will eventually take care of most odors. However, a higher output ozone generator will always complete the job more quickly.