Air purifiers and cleaners are products that are designed to make sure the air you're breathing in your home is free from contaminants. These products come in a variety of shapes and sizes, so its always important to do some comparing before deciding on a particular model or brand. "Air purifier" and "air cleaner" are two terms used to describe the same type of device.
Filtered Pollutants
Different models of air purifiers and air cleaners are designed to filter different types of pollutants out of the air. Gauge exactly what a particular filter or cleaner that you buy will be filtering to know what it can and can't do. For example, some models are specifically designed for odors and gasses, while others are designed to rid your home of pollutants that could exacerbate your allergies.
Air Changes
Air purifiers and cleaners typically can perform a designated number of air changes in a given period of time (usually an hour). Each air change cycle designates a period in which the purifier or filter is at work filtering out obstructions from the air. A unit with a higher number of air changes will work longer and more frequently than a unit with a lower number.
Size
Some air purifiers and air cleaners are designed to be used in a single room. Others cover a much larger area and can be placed in a centralized location inside your home, like a living room. If you are trying to purify and clean the air in your entire home, install a single unit of comparable size or multiple units of the same model in each room.
Wattage
The wattage specification for any air purifier or cleaner unit is directly related to how much electricity that unit will use. The more electricity the unit uses, the higher your energy costs will be for your home. Check the wattage specification on a purifier or cleaner before purchase so that you can anticipate the added costs of running the device over time.
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