Honeywell - HPA300
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Based on 1 year's data from Jan 25, 2026 How it works
Liked most:
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"I recently found out I have a bunch of allergies- including my dog, so I got these Winix units to try and help combat the allergies. ... Within about 45 minutes of running one in my living room, part of my nose that has been clogged for as long as I can remember opened up. I’m breathing better than I have in years."
"I can tell you they really work. I have a mold allergy, and mold is literally everywhere in outdoor or indoor air with spores just waiting to land in a suitable environment for growth, but I have no symptoms at home with my two small Winix."
"They are also great to have during annual west coast wild fire smoke season and keep particulates in the house undetectable even when it has been horrid outside."
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"We have indoor animals and almost a year later running 24/7 no issues. ... It’s just not the workhorse Winix is."
"I've had a Coway airmega going 24/7 for six years that hasn't developed any noise problems"
"I got annoyed when my winnnix developed a noise, but then I realized it was the unit I’ve been running almost 24/7 for ten years. ... The 2015-ish one is still fine."
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"third party filters (tested for effectiveness) cost $20 a year."
"Not only are official filters likely to be available, there are tons of aftermarket options available as well. ... If filter availability is a primary concern, the AP-1512HH or 200m are tops."
"filter replacements are readily available ($50 for 2) ... available + cheap-ish filter replacements"
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"I have 4 of them - 1 in each bedroom, 1 in entryway/dining, 1 in living room - all running for ... 7-8? years solid, 24/7. ... I went with a bunch of Honeywell HPA300 machines to cover multiple rooms several years ago and have been thrilled. They run 24/7 every day on low"
"This Honeywell HPA300 is a beast for allergies. ... I’ve used it in my living room, and it noticeably reduced my sneezing and stuffy nose during allergy season."
"I too have a stinky cat and a rabbit who doesn't stink but sheds like you cant believe. I went totally overboard and got SIX of these for 2100 sq ft place and my air has never been cleaner. ... If you get 3, your air will be pure."
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"This Honeywell HPA300 is a beast for allergies. ... I’ve used it in my living room, and it noticeably reduced my sneezing and stuffy nose during allergy season."
"Honeywell HPA300 is an absolute unit. ... Not the prettiest thing but it WORKS. ... We have severe dust allergies and two shedding dogs, and this thing keeps our living room air surprisingly clean."
"My grandfather has COPD and his pulmonologist specifically recommended the Honeywell HPA300. ... his breathing has noticeably improved since we installed them. ... Sometimes the medical-looking options are that way for a reason - they just work."
Disliked most:
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"the medify one sounds horrible- it has a weird high pitch and i can’t stand it even on the very lowest setting. ... i actually sent it back and they replaced it and the second one sounds the same."
"The Germ Guardian air purifiers from Costco are incredibly noisy and create a constant high-pitched noise at *any* setting."
"Levoit Core 300 was decent on specs, but it hummed just enough to wake the youngest every other night."
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"Also I just put it in the bathroom w my bf while he poops. No change in the air reading or smell of the bathroom."
"Just stay away from the Honeywell HPA models. They all develop a burning smell. I've swapped my 2 out a total of 6 times."
"They’ve massively oversold how large of a space this device is suited for. ... I found it did nothing for odors. ... There is basically no carbon filter in this so it won’t filter odors at all… ... Correct. I wish I had realized that before I bought it but oh well. The carbon sheet is advertised to make one think it will help with odors. Live and learn"
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"Just stay away from the Honeywell HPA models. They all develop a burning smell. I've swapped my 2 out a total of 6 times."
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"The filter is clogged light has been on for years though (yes I’ve replaced the filter several times)"
Academic-Towel3962 1.0My grandfather has COPD and his pulmonologist specifically recommended the Honeywell HPA300. We got one for his bedroom and another for the living room. It's not fancy or pretty, but his breathing has noticeably improved since we installed them. Sometimes the medical-looking options are that way for a reason - they just work. They go on sale for around $250 fairly often.
AndrewLAFan14 1.0This Honeywell HPA300 is a beast for allergies. It has an insanely high Clean Air Delivery Rate (CADR), which means it clears out dust, pollen, and pet dander super fast. I’ve used it in my living room, and it noticeably reduced my sneezing and stuffy nose during allergy season. It’s straightforward—no fancy features—but it gets the job done effectively.
Carlo668899 1.0Honeywell HPA300 is the Toyota Corolla of air purifiers. Boring, reliable, gets the job done
ClusterFugazi 1.0I think investing in one is not a bad idea, I have two Honeywell HPA300’s and they seem to do a good job of filtering smells. I think the biggest change you can make is investing in a MERV13 or above furnace filters. They’ll do a lot better job at filtering the over all air in your home.
its-creator1036 1.0I’d go with the Honeywell HPA300. It’s got a true HEPA filter and works really well against smoke, dust, and allergens. It won’t cover 2800 sq. ft. in one go, but for larger rooms (around 465 sq. ft.), it’s a solid performer. If you’re dealing with a big space, using multiple units could be a good workaround. If you want something that covers more area in one unit, you might want to check out Medify MA-112, but it’s a bit pricier. Just depends on how you want to set things up. Hope that helps! check reddit thread: [https://www.reddit.com/r/ProductsDiscussion/comments/1jifddb/top\_4\_air\_purifiers\_to\_breathe\_clean\_in\_2025/](https://www.reddit.com/r/ProductsDiscussion/comments/1jifddb/top_4_air_purifiers_to_breathe_clean_in_2025/)
KateTheGr3at 1.0In addition to Medify, which someone else mentioned, I have liked my Honeywell HPA series. I have the 100 and 300 in differently sized rooms.
kazumilee0214 1.0Honeywell HPA300 is an absolute unit. Not the prettiest thing but it WORKS. We have severe dust allergies and two shedding dogs, and this thing keeps our living room air surprisingly clean. It's a bit loud on high but the lower settings are fine for background noise. Filters are reasonably priced too.
Miiiine 1.0I have the Honeywell hpa300 and it's great. Make sure anyone you pick has standard sized filters. I always buy the off branded ones since they're much cheaper.
MimsyWereTheBorogove 1.0[Honeywell hepas](https://www.amazon.com/Honeywell-Allergen-Purifier-Extra-Large-White/dp/B07DD9H6YH/ref=sr_1_4?crid=58Q0VH8SRXXD&dib=eyJ2IjoiMSJ9.fm6NKggeQcsfscPGKwdhXul_Ss44OnjdD2MRmi36RA6MWr9Fwe-NBbpRfLc-8vaz-YLt_q80WSYTqmjLB_8qLwr9O4xcyEUgJK3JkcV1Nlu89S269qHynFuLBXf89g9gQuo6UnByZRYyJkMru6JmgV4Gy8scyBurl4x_loiTOLPobjCW1nVbwG8BJx8dQ0HgF7ucPLnU7Cf-3sy5O7Ie8xnLOYkc0zhTzSg42lUnff8.65xZTQJUhkIUKNAmmy2u1-gjHrZRnWFvXZ7M59o__Yc&dib_tag=se&keywords=honeywell%2Bhepa&qid=1758225670&sprefix=honeywell%2Bhepa%2Caps%2C237&sr=8-4&th=1) One in bedroom, another in main living room. Have an [air quality meter](http://amazon.com/Temtop-M10i-Professional-Electrochemical-Detector/dp/B07JF53NRK/ref=sr_1_1_sspa?crid=17RTKH4785YHW&dib=eyJ2IjoiMSJ9.0XoXD_Omp-HxTiN_bQSwIzfbh0jIEDEcE3_n1JxKjV8xRiR4mppLcAeS56ru9Y26hq34zXTlmY-nYeXV4s-XrW2JqUqFm9jV8D5uyDEiARoxFPi2oJPYXXD3zUzFAw8N90NhYDTbBpnKnXe6AodJr-dGSA6Pz5cRU_fjnm3VW6ln8LkXSTaX5QFG2sZlHUhtqoT3pR_4AgFNR15P4D5omCZ551ecM4TjuC1o7VXu34E.AAkVh3pD-IOoV6ernbNmGVJr0o_kiKpqqLx47Sd0aAc&dib_tag=se&keywords=temtop+m10&qid=1758225638&sprefix=%2Caps%2C149&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1), but the meter is useless, because my air is polished to near zero. AQI in my house is 4, no VOC's or anything else.
Ordinary-Rhubarb-888 1.0Also check the clean air delivery rate (CADR). I used this site to search for what was good - https://ahamverifide.org/ahams-air-filtration-standards/ I went with a bunch of Honeywell HPA300 machines to cover multiple rooms several years ago and have been thrilled. They run 24/7 every day on low but that turbo speed for about an hour helps move the air through the room faster on highest pollen days. Turbo speed sound is not quiet at all, but the low setting is very quiet.
+1 to the HPA300. I have 4 of them - 1 in each bedroom, 1 in entryway/dining, 1 in living room - all running for ... 7-8? years solid, 24/7. They are absolute powerhouses.
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