I blogged about how I have a Sharp air purifier in my room even before the very bad haze experienced last year. What makes an air purifier works is really the HEPA filter that is inside.
"High-efficiency particulate air or HEPA is a type of air filter. HEPA filters are designed to target much smaller pollutants and particles." (Source: Wikipedia)
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| A HEPA filter. |
Those who have a HEPA filter air purifier will know that the HEPA filter comes wrapped in a plastic bag and has to be installed in the machine. Once exposed to the environment, the filter has a lifespan of 2 years. It says so in the manual.
However, I have people tell me that they don't ever change the filter because the machine still works. Well, the machine could be working but the filter is probably degraded so badly that it no longer works to filter out harmful particles. In fact, it could be paying out harmful particles if it is badly degraded.
Anyway, if you own a HEPA filter air purifier and you have not changed the filter in 2 years or more, you might want to get it changed. Of course, you would have to clean the inside of the machine before installing the new filter too.
If you are still not convinced that the filter has to be changed, I changed mine today and here are the photos:
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| Old HEPA filter. |
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| New HEPA filter. |
The filters used to be available in Courts, Best Denki or Harvey Norman but they no longer stock them. I had to go to Sharp's Authorised Service Centre at Alexandra to get the filter. Not very convenient but it is worth the trouble to have clean air in my bedroom while I sleep:
Oh, it is cheaper to get a new HEPA filter than to buy a new air purifier, in case you are wondering. It costs just a bit more than $70 for the model of air purifier that I have.
This is not an advertorial.
This is just AK being kaypoh again.
Related post:
Protect ourselves from the haze while in bed.
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