Today's energy-efficient homes tend to be air tight, staying warm during the winter and cool during the summer. Unfortunately, the house isn't allowed to breathe and open windows are not always a good option. Air purifiers are designed to bring that touch of fresh air indoors.
Air pollution remains an environmental concern throughout the world. According to the Environmental Protection Agency, indoor air pollution levels can be up to five times higher than pollution levels outdoors. An air purifier can help you deal with tobacco smoke, pollen, animal dander, mold, mildew and other irritants and pollutants. Asthma and allergy sufferers can benefit from cleaner air, and we can all benefit from fewer irritating airborne particles, smells and microorganisms.
The most important thing to look for when you buy an air purifier is the correct size for your room. Air purifiers are portable and can be moved from one room to another, provided the rooms are similar in size.
To make the best choice, learn what CADR means. The Clean Air Delivery Rate (CADR) seal program was developed by the Association of Home Appliance Manufacturers (AHAM) to help consumers choose air purifiers. CADR is based on the cubic feet of air a purifier can filter per minute. The higher the CADR number the faster the unit cleans the room's air. Purifiers with the CADR seal remove tobacco smoke particles, animal dander, mold, mildew, dust and pollen particles. Use the following formula to decide which CADR is correct for your room:
Square footage x .75 = CADR
Example: If your room is 16 feet by 17 feet, which equals 272 square feet, you'll need an air purifier that has a CADR of at least 204. 272 x .75 = 204
If an air purifier isn't available with the exact CADR you calculate, round up. For instance, if your room size requires a CADR of 204, purchase one with a CADR of 220.
If you have a room with ceilings higher than 8 feet, move up to the next level CADR for a larger room. If you have an open floor plan, purchase two small units. The units can be moved to different areas in the room, cleaning the air more efficiently than one unit.
Different brands of air purifiers have different features. Here are some additional features to look for: