Airmega 150

Filter: H14 hepa 3rd party replacement for xiaomi fan: hewa 500rs 25W exhaust foam double sided tape, 2 pinplug, 2meter twisted pair cable all cost less than 50. cardboard was from the same box these arrived in. however I suggest going for the official replacement instead of 3rd party ones if you can. that would cost around 3600 to make and you will have the peace of mind that it really is hepa certified unlike the one i bought. coway is a great option too. talking about purifying, it does the job surprisingly well! I can feel air getting lighter in less than 20 minutes. I can't feel that heavy cold and pain on my nose anymore. my nostrils are all opened up. no more unnecessary coughing. the difference is clear. [few videos](https://drive.google.com/drive/folders/1QdlxCRnbbFFeSoZJLP3wBK0CvsceE__b?usp=drive_link) edit #1: Fan is in the correct orientation. it is sucking air through the filter and blowing it upwards.

Hi everyone, With the AQI hitting severe levels in Delhi/NCR right now, I know many of you are looking at air purifiers. I am writing this to warn you: **Do not buy from the Mi Store or Xiaomi Air Purifiers.** I ordered a Xiaomi Air Purifier Filter (Order ID: 5251109121610377). It arrived damaged, and my experience with their support has been a nightmare. **The Incident:** * **Delivered:** Nov 13th at 7:31 PM. * **Unboxing Video:** Recorded at 7:34 PM (Exactly 3 minutes later). I opened the outer box and saw the filter was broken. **Crucially, the inner factory plastic seal was 100% intact.** I have clear video proof showing the damage existed inside the sealed bag. I sent this video to Xiaomi support immediately. They rejected it. They claimed their "internal warehouse footage" shows it was sent correctly and the delivery partner "confirmed" no damage. They are completely ignoring the reality that I have video proof of the item being damaged *inside* the seal just 3 minutes after delivery. If they can deny a claim even with this level of proof, their warranty/support means nothing. **My Advice:** Don't make the same mistake I did. The build quality is questionable and the support is non-existent when things go wrong. **Better to go with Coway or Phillips.** They might cost a bit more, but at least you won't be stuck with a broken unit and a company that calls you a liar despite video evidence. I have filed a chargeback and a consumer court complaint. Avoid Xiaomi.

Coway Airmega made a huge difference for me. Less dust, room stopped smelling stuffy, and my allergies chilled out after like a week. Been using it for over 2 years and still solid. I’d buy the same one again tbh

>Disclaimer: I understand not everyone can afford an expensive solution, but a solution that you think works when it doesn't is more dangerous. >Disclaimer: Do your own research too and decide for yourself. I'm not a HVAC systems specialist. I'm not responsible if this doesn't work out for you. __________________ HEPA FILTERS ARE NOT EXACTLY MEANT FOR HOME USE!! It's meant more for industrial applications like in chemical and nuclear plants where you cannot allow even a tiny bit of contamination to pass in a SINGLE pass through the filter. They run on powerful HVAC systems with tons of high pressure air pushing through, because HEPA filters are extremely airflow restrictive!! And keep in mind, chemical contamination containment in an already clean room is NOT what you are trying to do at home. You are trying to capture polution particals FASTER THAN THEY RE-ENTER YOUR HOUSE/ROOM. Which means you need a system that can filter out large volumes of air quickly from your room using a big surface area and high airflow. ....which means the only HEPA air purifiers that will make that happen are the big ones that like from Coway that cost around ₹15,000 to ₹30,000+ Your small diy ₹2000 HEPA filter purifier *might* help a little bit and is better than nothing, but only if you are willing to make your room as airtight as possible, and that might not be good for oxygen flow or might even be impossible to do for your room!! But let's say you CAN afford something in the range of ₹12,000 and are willing to spend that much coz without it you'll die due to serious health issues..... What other options do you have? You can build a "Corsi–Rosenthal Box" !! A Corsi–Rosenthal Box uses "MERV-13" filters instead, that have higher airflow and can catch particals just as small as HEPA filters can. It just requires multiple passes of the air going through the filter to do it, but most polution will be removed in the first pass. It also uses 4 of them together, giving you 4 times the filter surface area!! ___________ There is a catch tho. They don't sell MERV-13 in India locally, and you'll have to import a set of 4 branded filters. (You do get them on amazon.in tho which is nice) Now, I know that sounds expensive, but if you actually do a comparison of costs, it's really about the same as HEPA!! A single branded Coway filter costs ₹3500. 4 of them cost ₹14,000!! And if you go with a local option, it's ₹1300 a piece. 4 of them cost ₹5,100 but with no garentee for if they are even genuine. 4 merv-13 filter sets come for around ₹7,000 to ₹10,000+ (depending on your vendor and units per set). Since amazon.in is what most people use, I'll consider its price of ₹10,000 for 4 filters as an average cost for them. With just an additional ₹2,000 (at max) for a 10" exhaust fan for pushing the Air, and some tape and cardboard, you now have a ₹12,000 air purifier that performs same if not better than a ₹15,000-₹30,000 air purifier at filtering large volumes of air quickly!! _______________ I put a lot of time and effort into writing this post and I really hope it helps people. I know breathing issues can be really scary and regardless of what solution you choose, I hope I could help you in making a more informed choice 🥺 Good luck y'all 🍀

I have been using both the Xiaomi Smart Air Purifier 4 and the Coway Airmega 150 for a few months now. Best ones in the market rn under ₹20k. Although there's not much fancy stuff on there, the Airmega is just superior when it comes to air purifying. It has a HEPA filter and a separate air filter as well. Downside is no AQI display. (just an LED indicator) The Xiaomi on the other hand has a lot of features. App Control - Alexa compatible - PM2.5 AQI/Temp./Humidity Sensor. It also tells you how much longer the filter will last. It comes with its own proprietary "HEPA certified" filter that you can buy only on [mi.com](http://mi.com); which is kind of a bummer. But does the job. But only 60-70% as good as the Airmega when it comes to air purifying. TLDR: \- Coway Airmega 150 is the best functionality wise \[Prices are a little hiked up rn\] \- Xiaomi Smart Air Purifier 4 is feature packed, if it matters to you. FYI, Both help keep the AQI under 10 at all times when the windows and doors are fully closed. For perspective, I live around the vadapalani area right next to the metro construction. Hope this helps :)