As urban air pollution becomes an unavoidable part of daily life, especially in cities like Delhi, many of us look for ways to protect the air quality inside our homes. The obvious answer is an air purifier, but a quick search reveals a major hurdle: the price. High-end models can cost a small fortune, leaving many to wonder if clean air is a luxury they can’t afford.
That’s when I stumbled upon a video from YouTuber Pallavi Saini Kalta, who faced this exact dilemma. Instead of spending a huge amount on a commercial device, she decided to investigate what really makes an air purifier tick. What she discovered was a surprisingly simple, effective, and incredibly affordable DIY solution that anyone can build.
Takeaway 1: Air Purifiers Are Simpler Than You Think
The first thing that struck me was the creator’s ‘aha!’ moment during her research. After questioning the high price of commercial units, she realized that an air purifier, at its core, is not a complex piece of technology. It’s essentially just two main components: a set of filters and a fan.
The filters—typically a combination of HEPA, carbon, and basic air filters—do the heavy lifting of trapping pollutants. The fan’s only job is to pull the surrounding air through those filters. This simple insight demystifies the entire device. Suddenly, you’re not just a consumer buying a black box; you’re an informed individual who understands the core principle, and that knowledge is power.
Takeaway 2: The Total Cost is Shockingly Low
By breaking down the air purifier into its basic parts, it becomes possible to source them individually for a fraction of the cost. The entire DIY project cost only $80. This is a dramatic difference compared to the market prices for brand-name purifiers that perform the same essential function.
The shopping list was short and simple:
• A combined filter unit (containing HEPA, carbon, and air filters)
• Double-sided tape
That’s it. It’s a stark reminder that when you buy from big brands, you’re often paying more for the logo on the box than for the technology inside it.
Takeaway 3: The Assembly is Incredibly Simple
You don’t need an engineering degree or a workshop full of tools to build this device. The assembly process proved to be almost laughably easy. In a fortunate stroke of luck, the inner diameter of the air filter unit perfectly matched the size of the 6-inch exhaust fan.
With the two main components aligning perfectly, the entire assembly consisted of just one step: using double-sided tape to secure the exhaust fan directly onto the filter unit. The fan and filter were securely fixed, and the DIY air purifier was ready to go in minutes.
Takeaway 4: It’s Not Just a Fan in a Box—It Actually Works
Of course, a DIY project is useless if it doesn’t work. This is where I was truly impressed by how the creator validated her device.
First, she performed a basic airflow test. After plugging in the fan, she held a tissue paper up to the filter. The tissue was immediately sucked against the surface, confirming that the fan was successfully pulling air through the filter as intended.
The second, more critical test measured its purification ability. She sealed the room by closing all doors and turned on an Air Quality Index (AQI) monitor. The video then showed the numbers on the AQI monitor steadily decreasing, providing clear, visual proof that the simple DIY device was actively filtering pollutants from the air and improving the room’s air quality.
This simple project proves that effective, tangible solutions to modern problems don’t always require expensive or complicated technology. Clean air in your home is accessible, and it doesn’t have to come with a premium price tag.
With simple and effective solutions like this hiding in plain sight, what other “complex” household problems are we overpaying to solve?
And if you really want to check your AQI levels you can try this device below or click here
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