Air purifiers offer users many benefits including increased long-term health, a cleaner indoor environment, protecting room furnishings, and removal of unpleasant odors. When shopping for an air purifier there are a multiple of sizes and options to choose from. The first consideration should be given to the goals the user wishes to accomplish with the air purifier. A lower priced unit may be adequate for odor and dust reduction, but will have little impact on removing contaminants such as carcinogens, and organic pollutants. Make a list of desired options and shop for the best air purifiers that will best meet the needs of the household.
Choosing an Air Purifier
Size: Make sure the purifier is large enough for the space by calculating the Clean Air Delivery Rate (CADR) needed. This is the number of cubic feet an air purifier can filter in a minute. The equation is square footage of area x .75. If the area the purifier is expected to filter is 250 square feet, a purifier with a minimum of a 187.50 CADR will be needed. Never purchase a purifier with a lower CADR than needed, it will not be able to adequately do the job.
Filters: High Efficiency Particulate Air (HEPA) filters will remove over 99% of particles from the air. There are a variety of other filter types on the market, which can be used in conjunction with a HEPA filter, but alone they will be ineffective.
Energy Star Certified: Air purifiers will normally run, if not continuously, most of the time during a 24-hour period. Choosing one with an Energy Star label will ensure it will consume less energy and cost less to operate than a normal air purifier.
Portability: Being able to move the purifier to a different room can aid in the removal of germs, when a household member is ill. Having a purifier on wheels can increase the effectiveness of its use.
Air Changes Per Hour: This is the number of times the entire volume of the purified area is replaced during an hour. The higher the number of air changes the cleaner the area will be. The optimal number should be a minimum of two air changes per hour. Keep in mind that some air purifiers may accomplish this with the fan only on a high setting, which will use more electricity and generate more noise. Look for a purifier that is able to accomplish this goal on lower fan settings.
Having an air purifier in the house has a multitude of benefits for all family members. When shopping for an air purifier, the most important consideration should be given to ensure the purifier is large enough to accomplish its task. It’s better to opt for an air purifier large enough to clean the area with less features, than to purchase a smaller one with a wide variety of special features. Having the fanciest air purifier that isn’t big enough to do the job, will be a waste of the money spent.