The Double 11 shopping festival has officially come to an end. According to Tmall, the total sales reached 168.2 billion yuan—equivalent to 168.2 billion miles of purchasing power. What did you buy this time?
One of my friends, who suffers from chronic rhinitis, emptied his shopping cart during the event. He bought masks, air purifiers, and humidifiers. Since last year, many of my friends in the life class have been using professional tools and testing methods to evaluate various brands and models of purifiers. However, as more brands entered the market, it became increasingly difficult for consumers to distinguish between real value and hype.
But here's the truth: an air purifier is a practical tool. The earlier you buy it, the better. The longer you run it, the more effective it becomes. How can you quickly choose the right one?
We follow a simple principle: don’t overthink small probability issues, avoid niche brands, skip the “metaphysical†Japanese or Swiss options, and keep things simple. We focus on three top-selling models, helping you save time before all the purifiers are sold out.
**Xiaomi Air Purifier – Affordable, Available, and Disposable**
The Xiaomi air purifier is priced at 699 yuan (599 yuan during Double 11) with a CADR of 310 m³/h, making it a cost-effective choice. Online reviews highlight its pros and cons—some say it has low dust capacity, others mention noise levels, and some claim it doesn’t reduce PM2.5. But considering the price, what else could you expect? Even during Beijing’s severe smog on New Year’s Day, Xiaomi was one of the few brands consistently available. It might not be perfect, but for 699 yuan, it’s a solid emergency solution.
[Image: Xiaomi Air Purifier]
All the strengths of Xiaomi lie in its affordability. That’s why we don’t recommend the Xiaomi Purifier Pro.
Imagine this scenario: your office is stuffy, and if smog hits, you can’t go outside. Would you install an air purifier in a small space? Definitely Xiaomi. You might not stay in that job next year, and buying another purifier would mean throwing away the old one. Xiaomi is easy to move and replace. After a year, the filter will need changing anyway.
This model is also ideal for business trips. If you’re staying in a hotel with poor ventilation, you can bring a Xiaomi purifier. If you get sick, medical insurance might not cover it, costing you around 2,000 yuan. A 700-yuan purifier is a smart investment.
"Low-cost and disposable" isn’t just for laziness—it works well in DIY scenarios. For example, in an open office, how do you ensure clean air near your desk? Simply place a purifier beside your station, but it won’t target your breathing area effectively.
After modifying his workspace, my friend found that a single purifier couldn’t clean the air around him. So he bought a small portable unit, connected it to a plastic bag, and directed it toward his face. The test results showed significant improvement.
This highlights Xiaomi’s advantage in size and design—it’s perfect for connecting to ducts.
Here’s how to do it:
Buy a few PE plastic bags on Taobao. Attach them to the air outlet of the purifier with tape, and cut the other end to fit near your nose. Since the purifier’s auto mode adjusts based on air quality, modifying it to target your face will make it run at high speed. Switch it to low gear manually, so you feel a breeze around your face, maximizing purification.
[Image: Xiaomi Air Purifier Setup]
Keep the setup simple and safe. This method is similar to using a personal air filter.
[Image: Measured Air Quality Near Face]
Some users even use PVC pipes to create more refined setups.
[Image: PVC Pipe Assembly]
You can place it under your desk like this:
[Image: Under-Desk Setup]
If you own a Xiaomi speaker, you can use voice commands to turn the purifier on without touching the button or opening the app. Xiaomi recently added a feature that allows the purifier to automatically start when air quality drops.
In short, it's better to buy early than later, and better to run it than not. If you want a purifier that can provide clean air, it's better to purchase it before the smog hits.
**352 – The Must-Have for Large Spaces**
While the Xiaomi purifier helps with clean air at work, if you live in a large apartment—say, a 130-square-meter flat or a 70-square-meter duplex—the 352 X80 is the best option. With a CADR of 750 m³/h, it can handle larger areas efficiently.
[Image: 352 X80 Product Page]
According to official data, the 352 X80 operates at 2,650 RPM and produces 1,180 m³/h of airflow. Its noise level is around 64 dB, which is significantly quieter than the Xiaomi model running at 310 m³/h.
That’s why Ronaldinho used an 800 CADR purifier at the recent air breathing conference. While a single room may not require such a high CADR, lower CADR models tend to be noisier. Generally, higher CADR means less noise for the same performance.
Before the release of Hammer’s new purifier, there were very few options for large spaces (CADR above 700). As a result, the 352 model was snapped up quickly last year.
If you live in an open-plan or large apartment, buy it now—don’t wait.
**Airx – Balanced Performance and Price**
The Airx A7 offers a good balance of performance, noise control, and price. At 2,199 yuan, it has a CADR of 500 m³/h and noise levels of 52 dB. While the 352 X80 is powerful, it can be noisy in high-speed mode. If you care about quiet operation, the Airx A7 is a better choice.
However, the 352 X80 has a 5-year fan warranty, while Airx only offers 1 year. So, if you need continuous use in heavily polluted areas, 352 is more reliable.
[Image: Airx A7]
To sum up, an air purifier is simply a filter and a fan. Filters need replacing, and poor fans can cause issues. Regardless of brand, they all operate on the same basic principle. So, don’t overcomplicate it. Buy it early, use it often, and you’ll be better off than waiting until it's too late.
Of course, if you care about noise and aesthetics, you can invest in a more expensive model. But according to experience, after Double 11 and the heating season begins, you might not have much choice left.
So, now that you’ve decided, grab it before it’s gone.
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