If your house is approximately 1000 square feet, that would be like a mountain too big to climb for a portable air purifier since they usually are not designed to cover wider However, there are portable models on our list that are capable of covering 800, 1000 and even 1600 square feet. So if you’re looking for a compact, budget-friendly purifier, take a look at Alexpure 3049. It can cover an area of up to 800 square feet and doesn’t require any complicated professional installation.