High Efficiency Particulate Air… sounds important, right? Well it is. Commonly known as HEPA, this type of filtration system captures 99.97% of particles 0.3 microns or larger in the air so you don't have to breathe them.
Particles 0.3 microns are barely, if at all, visible to the naked eye. Those particles include pollen, bacteria, dander, household dust, mold, plant spores, coal dust and even some viruses and some tobacco smoke.
If anyone in your home suffers from allergies or if you surround yourself with pets, then make sure your vacuum cleaner has a HEPA media filtration system. Other filtration systems do an OK job of capturing the big stuff, but HEPA media filtration traps the microscopic particles, too.
Your air will be cleaned as you vacuum so your home will be fresh from the floor to the ceiling.