Numerous studies reveal that Indoor air can be more polluted than the air outside. Air purifiers can help improve indoor air quality. However, more powerful smart models are quite bulky and hard to transport from one room—or place—to the next. Many air purifiers for home can weigh between 20 and 30 pounds, making them difficult to move.

Air purifiers that cost under $100 are small, portable and designed to be used in a single room. Read on for the best air purifier under $100.

Another reason why you may still be battling dust is having the wrong sized air purifier for the room. “If you're still seeing dust in your home even after using an air purifier, it’s possible that the unit you’re using is not the right size for your space,” Dr. Jaspreet Dhau, Vice President of Research and Development at Molekule, says.