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Know these 5 important things before buying an air purifier
Samira Vishwas | May 3, 2026 6:24 PM CST

Air Purifier Buying Guide: In today’s fast-paced life, we are leaving our health behind. Especially when it comes to air, we feel that the air at home is clean, but is it really so? Due to increasing pollution in cities, indoor air has also become polluted. In such a situation, many people have started buying air purifiers, so that they and their family’s health can remain safe.

But before buying an air purifier, it is very important to know some important things. Without the right information, you may buy a wrong or expensive product that may not suit your needs. In this article we will tell you what things should be kept in mind while buying an air purifier. Such as how its filter is, how the machine should be according to the size of the room, and which features are really important for you.

This information will not only help you buy the right product but will also save both your money and health.

Why is HEPA filter most important?

HEPA filter is a technology that removes up to 99.97% of dust, pollen, bacteria and other microscopic particles present in the air. When you go to buy an air purifier, first of all check whether it has a genuine HEPA filter or not. Many products on the market mislead customers by simply listing “HEPA type,” which is not as effective as true HEPA. If you have a member of your household who suffers from allergies or has small children, a purifier with a HEPA filter will be most beneficial. It can play a big role in improving your health. Therefore, it is useless to buy an air purifier without a HEPA filter.

Choose according to room size

Modern living and dining room

Every air purifier has a specific capacity, which is called CADR (Clean Air Delivery Rate). This tells how fast it can clean the air. If your room is big and you have bought a small air purifier, it will not work properly. Therefore, always choose the model according to the square feet of your room. Manufacturers usually give information on the product about how large an area it is suitable for. If you ignore this point, money will be spent but the air will not be clean.

noise and electricity consumption of also take care

Many times we buy an air purifier, but later its noise or electricity bill becomes a cause of trouble. There is no use of such products which do not allow you to sleep peacefully at night or leave your pockets empty at the end of the month. Therefore, before purchasing, see what is the decibel level (amount of noise) of the machine. Also, keep in mind whether it has energy saving features or not. Nowadays, there are many such models in the market which work on low power and remain very quiet. This will not only help you maintain your sleep but will also keep your electricity bill under control in the long run.

Understand the features, focus only on the essentials

Nowadays smart air purifiers have many features like Wi-Fi connectivity, control from mobile app, auto mode, night mode etc. But it is not necessary that all these features are useful for everyone. If your budget is limited, then give priority to basic but important features like HEPA filter, filter change indicator, auto speed control. Smart features are nice but not essential. So don’t spend too much on things that are not useful to you. It is important that the air purifier cleans the air properly, other features are a matter of later.

maintenance and filter replacement Also see cost

Air purifiers aren’t just a one-time purchase. In this, it is necessary to change and clean the filter from time to time. Therefore, before buying, make sure to check how many months its filters last and what is their price. Many times, the filter of a cheap air purifier gets damaged quickly and a new filter is expensive, due to which the expenses increase. Also, check whether the filter is easily available in the market or not. A good air purifier is one that works well for a long time with less maintenance.


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