Choosing A Good Air Purifier
Before you buy an air purifier machine, you need to compare the prices, efficiency, durability and the filter management of a particular unit. Nowadays, air purifiers are usually equipped with HEPA filter which is very good for filtering dust, bacteria and air pollens.
To rate how well an air purifier is, CADR is used and it stands for Cleaning Air Delivery Rate. You will be able to have cleaner with higher number of CADR on the air purifier machine. The Whirlpool AP51030K is designed to filter the air in medium to large sized rooms up to 500 square feet with a CADR of 315.
Another common filter is an activated carbon filter sometimes called charcoal filter, depending on the brand of air purifier. Carbon filters have been used over the centuries to purify water and it wasn’t until the early 20th century that the air cleaning qualities of charcoal got discovered. Activated carbon is therefore also one of the materials used in gas masks.
HEPA filters are more effective when it comes to cleaning micro particles and a carbon filter will be useful against smells or chemicals. The amount of carbon is an air purifier is measured by weight. What this actually measures is the amount of activated carbon used in the filter. Some air purifier even comes with a pre-carbon filter which is great for people who are suffering from allergies to smell.
Now that you are clear on the two major types of filters that come standard with most modern air purifiers, a little word on efficiency. For the HEPA label, it represents the amount of air that is cleaned as the air passes through the filter.
When the filter is working, some air just flow through without getting filtered and this will make it pointless for you to have a filter at the first place. Therefore, it is vital to check the CADR number on the air purifier so that you will be able to get effective air purifiers.
Bear in mind that the most important part of an air purifier would be the filter. Nowadays, air purifiers come with both the HEPA and carbon filters. Some of the more expensive models on the market claim to have permanent filters.
The Honeywell 50250 for example, unlike the Whirlpool AP51030K air purifier, boasts filters that do not need replacement but only need vacuuming instead. Many consumers do not favour the permanent filter as they prefer to replace the filters on a regular basis so that they can be sure that their air is clean.
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