This compact unit features the same advanced HyperHEPA filter technologies that you’ll find in IQAir’s HealthPro Plus, but in a smaller casing. Despite the smaller size, this purifier can cover an area as large as 1,240 square feet and is built to the same standards and performance requirements as the larger models. The exclusive IQAir HyperHEPA Filtration technology uses a dense network of nano-fibers that effectively traps particles of all sizes including viruses, pet dander, dust mites, other allergens and cigarette smoke. While ordinary air cleaners are only tested for the largest 10% of particles, IQAir's filtration is tested and certified to filter 99.5% of all particles down to 0.003 microns. Note: this unit does not include the V5-Cell gas and odor filter and cannot be upgraded to fit the V-5 Cell.