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I have a couple! The AirMega 100 is the smallest I have and the air mega mighty ap-1512 is the biggest— I also have the air mega 160 which is a great midsize one if your space isn’t too big. https://cowaymega.com/products/mighty-ap-1512hh?
This is the answer for reasonably priced air purifiers and it’s been the same for years. I have 2, zero issues. Filters are fairly priced. https://a.co/d/hC0PLzP Coway AP-1512HH
https://a.co/d/0j6HlWAl Have 2. Had them for years and years. Very happy
The Coway Mighty - we liked it so much we ended up with another one for our second floor. [Amazon Link](https://www.amazon.com/Coway-AP-1512HH-Mighty-Purifier-White/dp/B01728NLRG/ref=sr_1_1_sspa?crid=33NJV6SWPTL6M&dib=eyJ2IjoiMSJ9.2_UoO6pldtX_1sj-QWLF_TYhrn1dCOd7A20FRyCF6sTGt5ZH6VYrhuR84pQqT8duXMwP5eX99ov09c1mQRIBnk0WnBsJiDkrK-SY1A_Hk0dIbXri4i_GmGlbPsrW1RPVAYGNdXhxnaj2HoffEGrg5aw5LbYAmTy0FUmv39XYC_bK-JqDQvH7LOjOfBy29HEArtGk-X848-HAzMQTHrGRoGQPqgShAtD1DFpqvKPAl44.CmqTVQo6zbBJGXkly_zus7Q6Byu-AAHWu19cerhu6CU&dib_tag=se&keywords=coway%2Bmighty%2Bair%2Bpurifier&qid=1747862431&sprefix=coway%2Bmight%2Caps%2C151&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1)
I have been using the [Coway AirMega](https://amzn.to/49gjTgt) for years. It has also been [Wirecutter’s](https://www.nytimes.com/wirecutter/reviews/best-air-purifier/) top pick for a long time.
[Coway](https://www.amazon.com/Coway-AP-1512HH-Mighty-Purifier-White/dp/B01728NLRG) There's a black version as well. It's the best you're going to get for around $150 (usd). The replacement filters aren't insanely expensive, and are readily available. Put it on "mid" in terms of the fan, and it will do the thing somewhat silently. I have two, and I replace the filters every year. I have pets, I live very high in the mountains in a VERY dry climate, and have allergies. This is the one you want : ) p.s. Also, get a humidifier. Just a simple one from Vicks or some other off brand. Humidity in the air does wonders in terms of pollens. Basically you're putting water into the air, which reduces dust and all the other stuff that's not good for you.
Just get a [Coway Airmega AP-1512HH](https://www.amazon.com/hz/mobile/mission?p=eBeqXz6VyZEotuFbYAiAYyrdqMloPpz), just get it on sale for $149
Conway 1512HH, don't forget to take the plastic off the filters when you turn it on :)
As u/ankole_watusi said, if you have forced air, start with a good filter on your furnace. If like me that's not the case then: 1. HEPA vaccuum 2. HEPA purifier 3. Wash your bedding frequently (this is highly under rated) 4. If you have an air intake, filter it, I would say at least MERV 11. COWAY is routinely 1/3 off on Amazon. (Including right now, apparently, in Canada [https://www.amazon.ca/gp/aw/d/B01728NLRG](https://www.amazon.ca/gp/aw/d/B01728NLRG) I have been buying them for long enough (very dusty outdoors environment and a lot of houseplants) to know the build quality had gone down a bit - specifically on the 1512 - but functionality has not diminished. I also have 2 of the older tower model, and they work very well. In terms of ROI cleaning regularly with a HEPA filtered vaccuum has more of an impact. But far and away the best has been to do both. I also MERV 13 filter my air intake, but that's specific to my situation.
COWAY makes a great product.
I have two of these https://www.amazon.com/Coway-AP-1512HH-Mighty-Purifier-True/dp/B00BTKAPUU Other retailers have them too. I bought one with a 30% off coupon at Kohl’s years ago
Two COWAY 1512 Mega units, one on each floor
I have two COWAY Mighty units running full time
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