You don't have to spend RM3-3.5k for a reasonably functional air purifier.

You can try the Xiaomi Purifier 3H around RM500. Filters cost RM90-110 to be changed every 6 months iinm. Controlled by app, quite a smart purifier as you can set when it should turn on and off. Various fan speed settings unlike most purifier which only has 2-3 fan speed.

Yes definitely. Tons of dust will be collected by the outer layer which traps bigger particles.

Filters from Sharp, Panasonic for example have "pre-filters" which can be washed to remove all those dust.

Do sweep your room frequently else the dust will just be stuck at some dead spots. Get the grey one, it's the one which is HEPA Class 13 filter



The amount of dust on my filter is thicker than the video above lol and I have vacuum it 2 times in the past 6 months.