Honeywell - HPA300

My 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.

This 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.

Honeywell HPA300 is the Toyota Corolla of air purifiers. Boring, reliable, gets the job done

I bought a Honeywell Allergen Plus about a month ago. It’s pretty loud on the high setting (not too bad on low and not overly distracting watching tv on medium).  My mom has 3 of them and we have to speak up when they’re on high.🤣 https://a.co/d/gVc1g4k

I’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/)

In addition to Medify, which someone else mentioned, I have liked my Honeywell HPA series. I have the 100 and 300 in differently sized rooms.

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. It's a bit loud on high but the lower settings are fine for background noise. Filters are reasonably priced too.

[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.

Also 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. 

Honeywell makes some good air purifiers that are quiet and have a dimmer function for nighttime. A little more expensive, but reliable. I have an HPA200 and HPA 300 that have been running 24/7 for years.

We have a couple Winix purifiers from Costco and they're great. High CADR, compact, and they go on sale frequently. The HPA300 from Honeywell is also a great unit.

I have a Honeywell HPA200 and HPA300 that have been running almost nonstop for 7 years. You can find generic brand filters on Amazon that are relatively affordable as well.

I am a costco fanatic but when I did my research, the best air purifier I found and bought was Honeywell HPA300. This does not produce ozone- important- and has a HEPA filter. Not available at Costco at the time, though. I believe I used consumer report ratings to choose.

For general allergies like dust, I’ve had my Honeywell HPA300 for 4 years and it’s great and I feel and smell the difference. Unfortunately, I have neighbours that smoke and spray icky stuff and it’s not sufficient to get rid of that particularly if they’re actively still doing it. The original filters particularly the carbon were amazing, but buying the original filters because so great. I got generic filters and it seems okay.

Have Honeywell’s HPA8350 or HPA8300 in every room of the house except bathrooms. https://a.co/d/i2Iqqma

Have Honeywell’s HPA8350 or HPA8300 in every room of the house except bathrooms. https://a.co/d/i2Iqqma

I’ve got a Honeywell too, it’s the 300 series so pretty big. Yes the filters are expensive. I order the filters on Amazon though which saves a bit. My husband has terrible dust allergies and he noticed a difference right away. We live in a one bedroom. I will add I don’t usually run it in the summer when we have our AC cause the AC uses a lot of power.

I use the large room honeywell air purifiers. The one I have now has been running 24/7 for the last 5 years or so and is still trucking along. I use it because my wife and son smoke weed and smoke bothers me. It does a good job getting rid of the smoke and the amount of crap that is on the filter is amazing. I pretty much never have to dust.

I live in a tall loft with ciment ceilings and it produces a lot of dust. I got a large Honeywell HEPA air purifier and it works very well. The carbon pre-filter can be vacuumed and there is a thick layer of hair and dust every week. The inner filters I vacuum every month and change them once a year.

Yes, an air purifier helps. The best brand is Honeywell with a HEPA filter. Second is Bionaire with True HEPA filter (purple one), third is Bionaire with the blue filter. Levoit kind of sucks. Don't waste your money on the Pure Enrichment Personal Air Purifier.

Honeywell Hepa Air Purifier is amazing all the time especially post fire. It's saved me.

Honeywell HEPA. Don't buy an electrostatic/ionizer type "purifier" as it creates O³ (ozone) - which is hazardous (and is also a component of smog).

Honeywell HEPA air purifier, over a 100 bucks but had been running beautifully for theblast 6 years. Filters are expensive though, but as a lady with asthma better be safe

Honeywell HEPA is what I’ve used for decades. Reliable and easy to find their filters.

Honeywell HEPA air purifiers. I have two: one in bedroom and one in the room where I spend most of my time watching TV, etc. Makes a difference for me.

I have these, as well, and they’re great. The cheap after-market filters from Amazon work perfectly for them, too.

My Honeywell hepa filter is about ten years old now. The filter is clogged light has been on for years though (yes I’ve replaced the filter several times) These devices really should last a long time, it’s just an electric motor.

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.

You can get a HEPA filter air purifier (Honeywell makes decent ones) to deal with PLA and TPU, they dont emit the toxic VOCs like ABS, Nylon and PC, but they do still emit fine particles. Having it enclosed like you do is going to prevent a lot of those fine particles from scattering through the room though so its a big help. As a rule I try to not have my printers in the same room I work, but if you must, that HEPA filter will help reduce the fine particles a lot. For the more toxic materials, absolute best bet is to create a negative air pressure environment while venting outside through a window or port. If you cant or want even more reassurance, running a carbon filter does a lot to help. There are specialized air purifiers for VOCs but theyre not cheap. A really good one you can get is from Heygears, called the GreenPrint Purification Unit. Just know it's specifically for VOCs as it doesn't trap particles, it destroys them (so you still want a HEPA for the fine particles). This air purifier doesnt need filters though, it doesnt trap VOCs like a carbon filter which can become saturated and need replacements. It actively breaks down VOCs, so it just runs indefinitely with full efficiency, no need to swap filters.

We have a Honeywell with a hepa filter. It has been great, though a tad expensive.