How to Choose the Right Size HEPA Filter for Your Home

When it comes to choosing an air purifier for your home, size and quality are both important factors. Knowing the value of having a room-sized air purifier is essential, but it's also important to determine the size of the air purifier you need. Calculating the area of a room is simple and requires a measuring tape and accuracy. We recommend hiring a friend who can help you take and ensure that the measurements are accurate.

Once you have a measuring tape and an assistant ready, measure the length and width of your room in feet and then multiply the two numbers to get the square footage of the room. Using the CADR number to determine if an air purifier can clean the size of your room is fairly simple using the chart above, however, you should keep in mind that these numbers are based on an 8-foot ceiling height. If the ceiling height is greater, the coverage in square feet of the air cleaning device will be less than that shown. The CADR number indicates the volume of air that passes through the air purifier filters in cubic feet per minute.

Therefore, it is not enough to consider the size of the room based on the square foot area if your ceilings are higher. For example, if your room is 100 square feet and the ceilings are 8 feet high, the air volume in your room is 800 cubic feet. With 10-foot high ceilings, the room size is 1,000 cubic feet or 25% more. In this case, you will have to reduce the values in the previous table by 25%.

When it comes to selecting an air purifier for your home, HEPA filters are a great choice. We recommend using a HEPA filter that removes at least 99.97% of particles with a diameter greater than or equal to 0.3 microns. In addition, when it comes to those ultrafine particles that may be floating on their own, HEPA filters may not be precisely designed to capture particles smaller than 0.3 microns in diameter, but it turns out that they are quite capable of doing so in practice. To ensure that you get an air purifier with a HEPA filter that is suitable for your home, it's important to consider both size and quality.

Some air purifiers, especially those for pet owners, have a prefilter to trap pet hair before the air reaches the finer HEPA filter and activated carbon filter. This will help ensure that your home is properly filtered and free from allergens and other pollutants. Choosing an air purifier with a HEPA filter for your home doesn't have to be complicated or time consuming. By following these simple steps and taking accurate measurements of your room size, you can easily find an air purifier with a HEPA filter that is suitable for your home.