After using the product for more than a month now, here's the review of the product based on my experience until now.
First things First - The Filter Performance :-
I live in the Delhi NCR area and I have been using the product in the living room area (About 500 sq ft). The area is quite open and it connects to all the other rooms in the house as well the entrance. Thus this works like centrally filtering the air in our house. Overall i would say it does a good job of maintaining the air quality in even as large a space as my living room with connections to the other rooms. On normal polluted days i leave the filter to auto mode and it does its thing of levelling the PM 2.5 to about 40 - 50 levels, on smog filled days I leave it in max speed and it levels down the PM 2.5 values to suitable ranges in about 10 - 15 min. Fan noise is pretty low when compared to other filters, turbo mode would cause a little bit of flurry but not so much.
Build Quality :-
The filter is built quite sturdily. It is good looking and fits in with any decor. Especially important as i am using it in the living area. The filter is shaped as a cuboid. It has air inlets grills on the front, left and right side. The back has a removable door which houses the filter. Also on the back and just above the door i just mentioned is the air quality sensor. The sensor has its own inlet and outlet to allow the air to flow for air quality measurements. The top has a larger open grill with the fan seen some what below. The power button is located on the top itself, along with the WIFI indicator LED (More on this in smart feature discussion later). The front also has markings and individual LED for different modes the filter can operate in - Auto, Night and Favourite. Finally there is a slightly larger LED at the front bottom to indicate the air quality and for filter replacement error.
Installation :-
The filter ships with almost ready to use state, all we have to do is install the filter and the cable. The filter has essentially three components - Pre Filter (Purifies Larger Particles), Carbon (Removes Harmful Gases), and HEPA (Removes Particulate Matter - PM 10 and PM 2.5), and all of them are assembled in one cylindrical piece. The same can be easily installed by removing the back door and placing the filter in the designated spot. The cable is packed in the empty back area which can be removed before installing the filter. The cable can then be easily connected on the port at the back.
Working :-
After the filter and cable is installed, the filter is ready to use. Install the other end of the cable on any power outlet and the filter can then be switched on by pressing the power button on the top. Working of the filter is fairly simple. The fan is used to pull in the air from the front, left and right grills after which it passes through the unified filter and the clean air is let out from the top grill. Interestingly this dynamism with the cylindrical filter and multiple air inlets leads to a greater filter efficiency when compared to other air purifier. Definitely a plus here.
Pressing the button repeatedly would cycle through the different modes as described below
Auto - This is basically the automated mode that regulates the fan speed in accordance with the air quality sensed. If the air quality is poor the fan is put into high speed, as the air quality improves the speed is reduced and vice versa.
Sleep - This is basically the night mode here, the fan speed is regulated in accordance with the air quality but is generally reduced a bit to keep the noise to the minimum.
Favourite - Finally this is the manual mode, where in you can select the speed of the fan and its kept to that. The way to set this speed is via the app, otherwise it defaults to the maximum speed, i.e. turning it on the turbo mode basically.
This provides a great segway into the smart features of the filter
Smart Features :-
The filter works in companion with a smartphone app available for both iPhone and android. The app is called Mi Home. Once downloaded it allows you to sign up to an online account, post which you can add the air purifier in your devices list. Select the model - MI Air Purifier 2 and add it. After that it tries to connects to it and then allows you to configure the WIFI setting on your purifier. Once this is done your air purifier is now ONLINE !! Voila.
Post this all your air purifier management can now be done remotely via the app. You want to switch it off you can do it via the app, you want to change the mode you can do it via the app. You want to set the manual mode fan speed you can do it via the app. Additionally the app shows you the current sensed air quality by showing the PM 2.5 values measured by the purifier. Additionally the filter also shows the room temperature and humidity, a great value add !!!
Another smart feature of the purifier is that it automatically senses when the filter needs replacement and it shows the same by flashing the LED on the front. Additionally on the app it shows the approximate filter life remaining in both percentage and approximate days.
Summary :-
Overall this air purifier has exceeded my expectations in every way. I have a Phillips air purifier as well and in comparison this wins hands down. They are priced almost the same, the working dynamism with the air vortex is amazing and the smart features downright awesome. This filter trend sets what we would see in the future with the internet of things where everything becomes smart. With the ability to control my air purifier and see its current environment wherever i am is certainly something of the future. And it does keep its job pretty well with maintaining the air quality levels at decent levels !!
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