Anti-Bacterial Filter in Air Conditioners – Explained!

The air we breathe in and out always contains bacteria and other impurities. It is part of life.

It can surprise you that the quality of indoor air is worse than the outdoor air because of the lifestyles we follow today. You have homes having air conditioners today that necessitate the shutting of the natural ventilation.

Hence, you have the same air circulating inside with no avenue for escape.

Anti-bacterial Filter – The Principle

The anti-bacterial filter is one of the prevalent air purifying filters in use today. It acts as a complement to the other kinds of filters in an air conditioner.

The design of the anti-bacterial filter is such that it removes the particulates and harmful irritants from the air and purifies it before recirculating it into the rooms.

The absence of dust and other irritants improves the overall cooling performance of your air conditioners.

Anti-bacterial Filter – The Working

The process is a straightforward one. The device is a contraption designed to trap the dust particles and kill the microorganisms by using positively charges elements to attract the negatively charged particles.

These filters strain the particles through microscopic pores and fibres, thus effectively trapping the dust and other pollutants.

These anti-bacterial filters have a life of around 3 months after which you should replace them.

Anti-bacterial Filters – The Advantages

  • The most significant advantage is that it traps the airborne contaminants including dust, pollen, spores, bacteria, and viruses.
  • The regular use of the anti-bacterial filter in the air conditioning units can improve the quality of indoor air. Hence, it benefits asthma patients and children a lot by providing significant relief from respiratory problems.
  • By removing the dust particles and other irritants like microbes, these filters enhance the lifespan of your air conditioning units and improve their performance.
  • The enhanced performance levels of your air conditioning units end up saving a lot on your electricity bills.
  • These anti-bacterial filters are economical to use and easy to install
  • They are easy to clean using a simple vacuum cleaner

Anti-bacterial filters – Disadvantages

  • These filters have a short lifespan of three to four months. They need constant replacement. Of course, you can clean and wash them, but it is always better to replace them at regular intervals for improving the performance of your air purifying appliances.

Uses and Applications

Almost all the AC manufacturers use anti-bacterial filters in their AC brands. They have given different names to the filtering technology, but the working principles are the same.

Voltas AC – You have the Acaro Bacterium Filter to capture ticks, mites, and other harmful organisms. These filters have antiseptic properties whereby the kill the bacteria and maintain a healthy environment inside your air conditioning equipment.

Blue Star AC – The anti-bacterial filter used in Blue Star AC units eliminates 95% of bacteria like Escherichia Coli and Staphylococcus Aureus and protects from diseases like diarrhoea, dysentery, and from infections like boils, and so on.

Carrier AC – The anti-bacterial filters in these AC units go by the name ‘Biofilter.’ They trap airborne pollutants and microscopic particles like bacteria and fungi.

Chaithanya Vanjari
Chaithanya Vanjari
I'm Chaithanya Vanjari, the Creator and Editor-in-Chief at KitchenArena. With a decade of experience in evaluating large appliances like air conditioners, washing machines, refrigerators, and various small home devices, I possess the technical expertise needed to thoroughly review and understand the operational complexities of these appliances.


  1. In air conditioner filters, are any chemicals used on these filters other than the composition of the filter itself? Thanks.

  2. Could you further define what “positively charged elements” specifically are in these air conditioner filters? For example: Copper is an element. Is there Copper inside these air conditioner filters? Or any other “positively charged elements?” Thanks. P.S. I failed basic chemistry in school so I don’t remember the Periodic Chart of Elements…


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