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With the rise in air pollution around the world, people begin to pay attention to the indoor air quality. There are many advantage of air purifiers that help keep a clean and healthy environment in the house or office. However, people are often at a loss when confronted with so many different types of air purifiers. Thus the following points are provided in order to help you find a suitable unit, six things you need to consider when you buy an air purifier.

1. Which air purifier do I need? 

A general air purifier is qualified enough to improve the indoor air quality and give you clean, fresh and healthy air. 

The first thing you need to decide is exactly what particles you are trying to get rid of. If it is just dust, then don't waste your money on a true HEPA that captures 99.97% of particles and their costly replacement filters. But if you also want to get rid of pollen and other allergens then nothing short of a true HEPA will do.

If you are allergic to allergens such as grass pollen, you may need an air purifier with a HEPA filter designed to relieve allergy, which is able to remove 99.97% of common airborne allergens as small as 0.3 microns including pollen, dust mites, pet dander, ragweed and mold spores. 

More importantly, HEPA air purifiers are considered to be the most efficient units available in the market. If you are asthmatic or your symptoms may be triggered by certain odors and chemical pollutants, perhaps you should consider an asthma air purifier or an odor and chemical air purifier, which usually contain an activated carbon filter capturing annoying odors.  

2. Do I need a true HEPA or HEPA-like filter?

Amaircare 2500 Air Purifier - Black

A HEPA (high efficiency particulate air) filter is an air filter that has been tested and found to conform to a specific U.S. military standard. 

Filters rated as HEPA are able to eliminate particles as tiny as 0.3 microns with an efficiency of 99.97%, but in fact, there are existing some “HEPA-like” or “HEPA-blabla” concept filter on the market which are not real HEPA filter, so “true HEPA” filters are often referred to in some consumer information.

Some filters for HVAV systems are labeled as “HEPA-like” because of their higher efficiency compared with ordinary panel filters. They are pleated as a true HEPA filter so as to increase its surface area thus diminishes air resistance, which enables them to be used without upgrading the HVAV system. These “HEPA-like” filters have better performance than panel filters but not as well as true HEPA filters.

Don’t mistake these expensive “HEPA-like” filters for true HEPA filters.



3. Where will I place my air purifier?

On most occasions, an air purifier is highly recommended to be put in your bedroom or office room as you are likely to spend most of time there. 

Since portable air purifiers are only managed to clean the air in one single room, you have to buy another one for your living room or den.

When choosing the proper-sized air purifier for your room, you should firstly calculate the area of your room and find an air purifier with a coverage that is suitable for your room.

4. Do I need any special feature?

There are enormous features in the air purifiers, for example some features include:

  • remote control - for easier access
  • filter change indicator - to ensure you never miss a replacement schedule
  • air quality sensor - to track the air equality status
  • caster wheels - ease of access to other parts of the house

These features offer you more convenience and comforts when use an air cleaner. You can choose whatever you want to depending on your personal demands and preference.

5. How much maintenance will I have to perform?

In order to obtain the optimal performance of the air purifier, you usually have to replace the filters at intervals according to the manufacturers’ instructions. 

Different filters ought to be changed after different periods. The HEPA filter may be used for almost one year under normal circumstance while an activated carbon filter lasts six months and pre-filter should be substituted after only three months

Sometimes, some filters are washable therefore you need do the basic cleaning task. Don’t forget to consider the maintenance cost when you buy an air purifier. 

6. Is noise level a concern?

Most air purifiers make noise. Most models have multiple speed and noise levels that are adjustable. When you compare different air purifiers make sure you rate the different noise levels from silent to noisy.

Before you make you decision about which one air purifier to purchase, there are 6 points you should know.

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