Best Air Purifiers to Buy online in India (September 2023)

While you might not have much control over the outdoor air quality getting worse, you can make a difference in the air quality inside your home by using an air purifier. This is especially important if you live in a big city or a moderately-sized one. We understand that picking the right air purifier from all the options available can be confusing. There are a lot of things to think about, like how well it works, how much it costs to keep it running, the different types of filters it uses, and more.

But don't worry, we're here to help. We at Digit have given you expert recommendations on buying the best air purifier that serves your needs across various price segments and features. We also have a quick reference air purifier buying guide at the bottom of this list of top 10 Air Purifiers to buy in India, to help you buy the right air purifier step by step.

Types of filters in air purifiers

• HEPA Filters: These are special filters that can capture tiny particles floating in the air. They need to trap 99.97 percent of these particles, which are as small as 0.3 micrometers, as the air goes through them. HEPA filters are rated differently, like E10, E11, E12, and more. The higher the rating, the better the filter works. Some filters, like H13 and H14, are great for home air purifiers, while others like U15, U16, and U17 are used in big industries. Keep in mind, that the better the filter, the more you might need to pay.
• Carbon Filters and Multiple Filters: Air purifiers can have one, two, or even more filters inside them. Most home air purifiers in India use a HEPA filter.
• Pre-Filter: Imagine this as the first shield of defense. It catches bigger particles like dust, pet hair, and stuff. This filter is usually washable and makes the other filters last longer.
• HEPA and Carbon Filters: After the pre-filter, there's usually a HEPA or activated carbon filter. HEPA catches tiny particles, while carbon is good at trapping bad smells and gasses. More carbon usually means better smell and gas removal. If an air purifier has both types of filters, it's good. But do ask how much carbon it has – this affects how well it works. The more the better, and the amount is often given in grams or kilograms.

Filter replacements:

• Replacing Air Purifier Filters: Think of the filters in an air purifier like batteries in a toy. They don't last forever and need to be changed after some time. There are different kinds of filters, like pre-filters that you can wash every few weeks, and carbon filters that last longer than HEPA filters.
• The Replacement Schedule: Companies might say you need new filters every six months or a year. But it's better to ask how many hours the filters work before needing a change. This depends on how good the filter is, how polluted your area is, and how much you use the air purifier each day.
• Ease of Replacing Filters: Some air purifiers make changing filters easy, like putting new batteries in a remote control. Others might be a bit tricky. Check if you can change the filters by yourself or if you need to call the company for help.
• Smart Features of Air Purifiers: Newer air purifiers have cool tricks that make them even easier to use. Some can talk to your phone or other devices through the internet (IoT). This means you can control them from far away and see how clean your room's air is in real time. When you're picking an air purifier, see if it has built-in sensors and if it can show you how clean your air is on its screen or through an app.
• Sensor Accuracy: The sensors inside might not be perfect, but they should at least match the outdoor air quality. They usually show how many tiny particles (PM2.5) are in the air or the overall air quality (AQI). If they can also tell you about larger particles (PM10) and smelly stuff (VOC), that's even better.