How portable are air purifiers?

The larger and heavier air purifiers are best kept stationary, while some are portable and come with casters. Look for a smaller device or one that rolls if you want to use your air purifier in your home office during the day, your living room at night, and your bedroom at night.

As previously said, the size of an air purifier is inversely proportional to the size of the area it can successfully clean, so the greatest selection for your nursery is unlikely to be the best choice for a family room three or four times larger.

If you want one air purifier to cover your entire home, you'll need to strike a balance between size and portability.