Choosing the right air purifier for your room size

Consider the square footage of the room you wish to filter when selecting the proper size air purifier for your needs.

Looking at "air changes per hour" is one technique to determine the greatest fit. This measure may be mentioned in the specifications of your air purifier. It can help you grasp how filtration works in practice because a smaller air purifier can spin the air in a 350-square-foot room eight times per hour but only four times per hour in a 700-square-foot space.

You can also compare clean air delivery rates (CADR), which we will discuss further below.

If you're not sure how much room you'll need to clean, it's probably a good idea to acquire a larger air purifier than you think you'll need, as long as it's within your budget.

Use these guides to find an air purifier that fit your room size:

• Small: Personal space or rooms up to 299 square feet.
• Medium: Rooms between 300 and 699 square feet.
• Large: Rooms between 700 and 1,900 square feet.
• Whole-House: Whole-house models.