This is the One Most Important Thing You Need in an Air Purifier! - Sterra

This is the One Most Important Thing You Need in an Air Purifier!

The air within our homes is not as clean as most people think. Aside from chemicals and bacteria, there are also airborne viruses that can spread within households. This is why many people nowadays are buying air purifiers!

There are many air purifiers to choose from... but there is just ONE thing that cannot be missing from any air purifiers. If the air purifier doesn't have this, don't buy it. Without this, the air purifier is technically just a device that sucks and blows out the exact same dirty air.

The ONE thing that is most important in air purifiers is True HEPA filters

So what is a True HEPA filter and why is it the most important thing you need in an air purifier?

True HEPA filters

HEPA or High-Efficiency Particulate Air filter is a type of mechanical filter that forces air through a fine mesh and traps pollen, pet dander and dust mites, and other harmful particles in the air. HEPA filters are graded on the level of efficiency of filtering air. 

True HEPA filters can filter particles as small as 0.3 microns and have 99.97% efficiency.  HEPA-type filters, on the other hand, have a 90-95% efficiency and can only filter particles as small as 2 microns. True HEPA filter is rated based on its MERV or minimum efficiency reporting value. 

There are air purifiers that are labeled HEPA “type” or “style” filters or whatever wordplay the manufacturers use to market these air purifiers. However, these filters can not be considered True HEPA filters because they did not pass the required standards. These filters follow the concept of HEPA filters but have a lower efficiency compared to medical grade True HEPA filters.

Beware of Fake True HEPA filters

Because of the high demand for air purifiers, there are air purifiers that brand their HEPA-type filters as True HEPA filters as a marketing gimmick. This is why it is important to determine if a particular brand of air purifier has True HEPA filters indeed.

When buying your air purifier make sure that it has a real true HEPA filter, you can check through the specifications of the air purifiers. 


The Sterra Moon Air Purifier has a medical-grade True HEPA-13 filter and it is one of the most popular air purifiers in Singapore. The Sterra Moon Air purifier is used by thousands of Singaporeans and celebrities. It offers maximum protection against bacteria, viruses, and other air contaminants, without the pricey cost.

It uses cutting-edge technology to provide the best air filtering system but comes at a reasonable price. It is a popular household option because Sterra Moon offers value for money by providing high-quality air purifiers but making them budget-friendly. 

Other than True HEPA-13 filter, with the Sterra Moon Air Purifier, you can get the UV or Negative Ion feature to receive optimal protection against harmful elements in the air. Sterra is one of the very few air purifiers in Singapore that have True HEPA-13 filters with latest UV and Negative Ion Technology, making it one of the most sought-after brands. 

The Sterra Moon Air Purifier is on a limited-time 50% OFF sale now! 

Click here to check the availability!