Honeywell HPA300 HEPA Air Purifier, Airborne Allergen Reducer for Large Rooms (465 sq ft), White - Wildlfire/Smoke, Pollen, Pet Dander, and Dust Air Purifier


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  • EXTRA LARGE ROOM AIR PURIFIER – Honeywell HPA304 HEPA Air Purifier helps provide cleaner, fresher air. Recommended for extra-large rooms (465 square feet), HEPA Filtration captures up to 99.97% of microscopic airborne allergens & particles.
  • HELPS REDUCE ALLERGENS - This HEPA air purifier has 3 air cleaning levels including Turbo Clean. It helps capture the following microscopic airborne allergens and particles: dust, pollen, pet dander, dust mite debris and smoke.
  • EFFECTIVE AIR CLEANING AND CIRCULATION – The Honeywell HPA304 Air Purifier filters and circulates air in extra-large 465 square feet rooms up to 4.8 times an hour.
  • ALLERGEN PLUS SERIES – This Honeywell HEPA Air Purifier is part of our Allergen Plus series. This product earned the ENERGY STAR label by meeting strict energy efficient guidelines set by the U.S. EPA.
  • COMPATIBLE DOES NOT MEAN COMPARABLE – For best performance, use only Genuine Honeywell air purifier filters. Compatible air purifier filter replacements are not guaranteed to offer the same performance or efficiency.
Color White
Brand Honeywell
Product Dimensions 20"D x 10.8"W x 22.3"H
Floor Area 465 Square Feet
Particle Retention Size 0.3 Micron
Power Source Corded Electric
Control Method Touch

This Honeywell HPA304 HEPA Air Purifier includes a Certified Honeywell HEPA Filter that helps capture up to 99.97% of the following microscopic airborne allergens and particles: dust, pollen, pet dander, dust mite debris and smoke.* Recommended for extra-large rooms (465 Sq. Ft.). This Honeywell air purifier can filter and circulate air up to 4.8 times an hour. If you have pets or stale indoor air, air purifiers help deliver cleaner, fresher air. This Honeywell HEPA Air Purifier is part of our Allergen Plus series. This product earned the ENERGY STAR label by meeting strict energy efficient guidelines set by the U.S. EPA. Always purchase Genuine Honeywell replacement air purifier filters. They are certified to help capture odors and the following microscopic airborne allergens and particles*: dust, pollen, pet dander, dust mite debris and smoke. Other compatible filter replacements are not guaranteed to offer the same performance or efficiency. Quiet air purifier has easy to use touch controls, a filter change indicator and reset, 2, 4 or 8 hour automatic shut-off timer and a control panel dimmer. Backed with a 5-year warranty. Disclaimers: *From the air that passes through the filter, 0.3 microns and larger. **Based on 3rd party independent CADR testing for the smoke CADR value when operated at the highest level. Air circulation depends on many factors, such as room size and configuration. There is no guarantee that all of the air in a room will pass through the filter. The ENERGY STAR name and mark are registered trademarks owned by the U.S. EPA. The third-party testing for the R filter efficacy was done by LMS Technologies, Inc. on July 28, 2022. 

  • betteannsheffy1hgwvx@gmail.com

    08-03-2026

    Mi mujer y uno de mis hijos (3 años) estaban teniendo problemas respiratorios (aparentemente) de alergias durante todo Diciembre, sobre todo por las noches. Compré los filtros para ponerlos en cada recámara y prenderlos durante la noche y se solucionaron los problemas, desde que llegaron todos pasamos buenas noches.El aparato luce de buena calidad, tal cual viene en la foto. Sólo hay que desempacarlo, sacar los filtros del aparato, quitarles las bolsas, volverlos a poner y es todo. Es relativamente silencioso, como un ventilador pequeño. Tiene timer y diferentes niveles de filtrado así como dimmer para "apagar" los leds que molestan por la noche.A pesar de ser el más pequeño de la gama, es más grande de lo que esperaba pero ligero.Si lees esto, es que no he tenido fallas con el producto y no he requerido modificar esta revisión. Hasta ahora, todo bien.

  • sharonuulauraov9368@gmail.com

    08-03-2026

    Over the past 7 to 10 years, we have been purchasing this exact model for our house, and all of them still work perfectly. We live in a house that was built in the late 60s, have two cats and two dogs, and three teenagers. I am HIGHLY allergic to cats - if I pet them, I have to wash my hands immediately. The amount of pet dander in my home is outrageous. We also recently had our subfloor replaces in several areas of the house and it has caused a massive amount of wood-colored dust (we need to have our duct work redone and suspect it is a part of the dust issue in the house). These are strategically placed around the house for maximum cleaning.One, these are the best because you can place them against a wall. The downside is that it will create more dust on the wall near the air purifier. Simple logic - the air exits the top and what hasn't been sucked in through the device travels on a path that hits the wall. So you have to dust your wall - no big deal. I have to do that, due to just being noticeable, about twice a year.The hepa filters only need to be changed once a year, and the pre-filter every 3 months. When I change the pre-filter, I normally run a vacuum around the edges where there is dust buildup. This is unavoidable for any air purifier (I have tried many versions and keep coming back to this one).WHAT MAKES THIS THE BEST:- Durability. I have had our first one we ever purchased (maybe 7 to 10 years ago) running all day at the highest speed without going on turbo, consistently and there has been zereo degradation to the unit. It works as well today as it did when we purchased it many years ago.- White Noise. I like white noise, and unless it is on turbo, you don't really think about the sound once you get used to it. My pets are not afraid of it, which means it's just white noise to them as well.- Frequency of filter changes and types of filters. Sure you can buy the name brand filter replacements, but the generic ones are just as good and you save money. Honeywell's products are excellent from my experience, and the device itself has stood the test of time. For the filter replacements, you're just paying for the Honeywell name if you choose their higher priced replacements.-CLEANER AIR! Like I said, we have four of these now. One in my son's room which is a mother-in-law suite - the size is sufficient for the size of his room. The room was an addition built in the late 80s, early 90s, and the door to the outside isn't perfect (old house issues), and some outdoor allergens get into his room. Having one in his room has greatly reduced allergies during high pollen season (we are in the south, pollen is around all year). Since adding the most recent unit, the amount of the brown dust I have seen has been reduced. We also have one in our living room that is large enough to seat 10 people, and a home office. My newest one is located in another home office that I share with my dogs and their crates. Again, allergen reduction was easily noticeable once it was in place. The last one we own in in our bedroom because of my allergies (no pets allowed). I know it has made a difference because I have significantly less allergies in the morning than I did prior to putting one in our bedroom. My entire life has been one allergy attack after another, even after taking allergy shots. These units help me live life - WITH PETS I AM ALLERGIC TO - without a constant runny nose and itchy eyes.If you are looking for a unit that will not die in a year, or start making strange sounds after a few weeks of use, THIS IS THE UNIT YOU HAVE BEEN DREAMING OF! Like I said, we have had the same one for many years (we got our first one at a big box store and I can only guess that it was at least 7 years ago, but I suspect it was closer to 10).

  • zhourufa3@gmail.com

    08-03-2026

    I've had allergies all my life. Over the years I have purchased other brands and found them ineffective. The technician who services my heat pump didn't recommend any air cleaner/purifier. I read the reviews for this unit, HPA 300, and decided to try it anyway. So glad I did. It does a great job circulating air in the room, and pulling dust out of the air. My house is dusty and I don't like housecleaning. I have noticed a big difference in how much less dust accumulates on the furniture since I have been using this unit. Even my cat, who has chronic upper respiratory issues, sneezes less. Once a month I vacuum the prefilter carefully, even thought the instructions said not to. That saves the cost of replacing the pre-filter every month, and I have not noticed any loss of effectiveness. The carbon pre-filter is primarily for odor removal, and that is not an issue for me. The carbon's ability to remove odors will be exhausted after 3 months or so, but it will still remove just as much dust. I have not had to replace the HEPA filter yet, and I also vacuum it carefully. Noise level on the low setting is acceptable. Louder noise on high took some getting used to, but it doesn't need to sat on high for very long. I like the performance of this unit so much, I am planning to add another unit soon. The HP300 is the largest unit, but handles a greater volume of air filtration. Definitely recommend the Honeywell HPA 300.

  • sonofabraham87@gmail.com

    08-03-2026

    Cleat out the smoke in the garage.

  • mariarunancyok8425@gmail.com

    08-03-2026

    EMPEORA LAS ALERGIAS, AMANECES TODO TAPADO SIN PODER RESPIRAR, LO APAGAS A LA SIGUIENTE NOCHE Y RESPIRAS NORMAL. PESIMO PRODUCTO, SON SOLO ENGAÑOS. . .

  • jsbakgobelen8@gmail.com

    08-03-2026

    Sending your firstborn off to college in the midst of a global pandemic is kinda scary. To soothe your own nerves you think "Hmm if I buy him an air purifier for his dorm room maybe, just maybe it will capture some of those rogue air particles which might cause him discomfort (allergies) or harm (illness)."Of course the teen gives you the eyeroll when hearing about the idea. Parents of teens, *you know that look. "I don't need an air purifier!" insists he. I buy it anyway. I tell him it will make a great white noise machine. He rolls his eyes at me again. But, it makes it into the fully stuffed car as we get ready to roll on down the highway to get to the campus of higher learning. Pretty sure he was just humoring me as he packed it but hey, whatever it takes.I take no chances. *I* set it up in his teeny tiny dorm room (with which he will share with a roommate). Figured that while he might unplug it and shove it under the bed as soon as I leave, I at least gave it a shot.A few weeks go by before I happen to bring up the topic of "Hey, by the way, how's that air purifier working for you?" He says, "You were right (I try not to fall over hearing those rarely before uttered words). It makes a great white noise machine. We barely notice it on anymore." :::Victory dance on my end of the phone:::Before he's getting ready to come home for Thanksgiving, he happens to mention "Hey there's a red 'check filter' light that lit up on the machine. What am I supposed to do with this? It still seems to be working completely fine." Since he's going to be home for 7+ weeks (more pandemic disruption) before Spring semester starts up again, I just tell him to bring the whole machine home and we'll deal with it over break.Home comes the lad with his machine. We casually open it up to check the filter and "OMG!!!" Uh yes. This machine works and apparently works very well!! Mind you, I personally had installed the brand new and spiffy clean filter prior to sending it off to school. The dorm room was very tiny and was in fact pretty clean when we arrived. The boys chose not to use a rug in the room so it's not like there was "carpet fluff" to errantly fly around the room. They're both the studious, pretty overall clean guys who really couldn't do much to create dirt in the room as there were all kinds of pandemic guidelines/restrictions in place.But THIS (see photo) is what the machine captured between the late August & mid November! Pretty disgusting to see but also pretty darn awesome to see how well the machine worked.And the college lad? No more eye rolling when it comes to the mention of an air purifier. He is now completely sold on it. He recently came home for the summer & while most everything else from his dorm room got tossed into a corner of the basement not to resurface again until the trek back down to campus in August, I noticed that the air purifier (with a nice fresh & clean filter) is carefully set up in his bedroom & running 24/7. Catching any wayward dust particles....and serving as a good white noise machine.Buy this machine. It works. Pictures don't lie. I shared this pix on a college parents' message board. LOL Too bad I couldn't get commission on the ensuing sales because I can tell you, that a whole bunch of parents rushed to order one of these for their kids' dorm rooms after seeing the picture I took. I myself ordered another one (different size...larger) to place in our basement living area. And will be looking to order another one for our bedroom. The teen's not the only one sold on this machine. I am too!

  • dorothyuddeborahif4417@gmail.com

    08-03-2026

    RESULTO ÚTIL PARA LA LIMPIEZA DEL AIRE EN LA HABITACIÓN

  • hanrynikols04@gmail.com

    08-03-2026

    Apareil americain, acheté sur amazon.fr mais venu directement des Etas Unis, prise americain, INCOMPATIBLE avec le reseau europeen 230 V!! Il fallait un transformateur 110 Volts. Moi j'ai reussi a detruire l'appareil, vous devez prevoir un transformateur

There have been no reviews for this product yet.
  • bet******

    Mi mujer y uno de mis hijos (3 años) estaban teniendo problemas respiratorios (aparentemente) de alergias durante todo Diciembre, sobre todo por las noches. Compré los filtros para ponerlos en cada recámara y prenderlos durante la noche y se solucionaron los problemas, desde que llegaron todos pasamos buenas noches.El aparato luce de buena calidad, tal cual viene en la foto. Sólo hay que desempacarlo, sacar los filtros del aparato, quitarles las bolsas, volverlos a poner y es todo. Es relativamente silencioso, como un ventilador pequeño. Tiene timer y diferentes niveles de filtrado así como dimmer para "apagar" los leds que molestan por la noche.A pesar de ser el más pequeño de la gama, es más grande de lo que esperaba pero ligero.Si lees esto, es que no he tenido fallas con el producto y no he requerido modificar esta revisión. Hasta ahora, todo bien.

  • sha******

    Over the past 7 to 10 years, we have been purchasing this exact model for our house, and all of them still work perfectly. We live in a house that was built in the late 60s, have two cats and two dogs, and three teenagers. I am HIGHLY allergic to cats - if I pet them, I have to wash my hands immediately. The amount of pet dander in my home is outrageous. We also recently had our subfloor replaces in several areas of the house and it has caused a massive amount of wood-colored dust (we need to have our duct work redone and suspect it is a part of the dust issue in the house). These are strategically placed around the house for maximum cleaning.One, these are the best because you can place them against a wall. The downside is that it will create more dust on the wall near the air purifier. Simple logic - the air exits the top and what hasn't been sucked in through the device travels on a path that hits the wall. So you have to dust your wall - no big deal. I have to do that, due to just being noticeable, about twice a year.The hepa filters only need to be changed once a year, and the pre-filter every 3 months. When I change the pre-filter, I normally run a vacuum around the edges where there is dust buildup. This is unavoidable for any air purifier (I have tried many versions and keep coming back to this one).WHAT MAKES THIS THE BEST:- Durability. I have had our first one we ever purchased (maybe 7 to 10 years ago) running all day at the highest speed without going on turbo, consistently and there has been zereo degradation to the unit. It works as well today as it did when we purchased it many years ago.- White Noise. I like white noise, and unless it is on turbo, you don't really think about the sound once you get used to it. My pets are not afraid of it, which means it's just white noise to them as well.- Frequency of filter changes and types of filters. Sure you can buy the name brand filter replacements, but the generic ones are just as good and you save money. Honeywell's products are excellent from my experience, and the device itself has stood the test of time. For the filter replacements, you're just paying for the Honeywell name if you choose their higher priced replacements.-CLEANER AIR! Like I said, we have four of these now. One in my son's room which is a mother-in-law suite - the size is sufficient for the size of his room. The room was an addition built in the late 80s, early 90s, and the door to the outside isn't perfect (old house issues), and some outdoor allergens get into his room. Having one in his room has greatly reduced allergies during high pollen season (we are in the south, pollen is around all year). Since adding the most recent unit, the amount of the brown dust I have seen has been reduced. We also have one in our living room that is large enough to seat 10 people, and a home office. My newest one is located in another home office that I share with my dogs and their crates. Again, allergen reduction was easily noticeable once it was in place. The last one we own in in our bedroom because of my allergies (no pets allowed). I know it has made a difference because I have significantly less allergies in the morning than I did prior to putting one in our bedroom. My entire life has been one allergy attack after another, even after taking allergy shots. These units help me live life - WITH PETS I AM ALLERGIC TO - without a constant runny nose and itchy eyes.If you are looking for a unit that will not die in a year, or start making strange sounds after a few weeks of use, THIS IS THE UNIT YOU HAVE BEEN DREAMING OF! Like I said, we have had the same one for many years (we got our first one at a big box store and I can only guess that it was at least 7 years ago, but I suspect it was closer to 10).

  • zho******

    I've had allergies all my life. Over the years I have purchased other brands and found them ineffective. The technician who services my heat pump didn't recommend any air cleaner/purifier. I read the reviews for this unit, HPA 300, and decided to try it anyway. So glad I did. It does a great job circulating air in the room, and pulling dust out of the air. My house is dusty and I don't like housecleaning. I have noticed a big difference in how much less dust accumulates on the furniture since I have been using this unit. Even my cat, who has chronic upper respiratory issues, sneezes less. Once a month I vacuum the prefilter carefully, even thought the instructions said not to. That saves the cost of replacing the pre-filter every month, and I have not noticed any loss of effectiveness. The carbon pre-filter is primarily for odor removal, and that is not an issue for me. The carbon's ability to remove odors will be exhausted after 3 months or so, but it will still remove just as much dust. I have not had to replace the HEPA filter yet, and I also vacuum it carefully. Noise level on the low setting is acceptable. Louder noise on high took some getting used to, but it doesn't need to sat on high for very long. I like the performance of this unit so much, I am planning to add another unit soon. The HP300 is the largest unit, but handles a greater volume of air filtration. Definitely recommend the Honeywell HPA 300.

  • son******

    Cleat out the smoke in the garage.

  • mar******

    EMPEORA LAS ALERGIAS, AMANECES TODO TAPADO SIN PODER RESPIRAR, LO APAGAS A LA SIGUIENTE NOCHE Y RESPIRAS NORMAL. PESIMO PRODUCTO, SON SOLO ENGAÑOS. . .

  • jsb******

    Sending your firstborn off to college in the midst of a global pandemic is kinda scary. To soothe your own nerves you think "Hmm if I buy him an air purifier for his dorm room maybe, just maybe it will capture some of those rogue air particles which might cause him discomfort (allergies) or harm (illness)."Of course the teen gives you the eyeroll when hearing about the idea. Parents of teens, *you know that look. "I don't need an air purifier!" insists he. I buy it anyway. I tell him it will make a great white noise machine. He rolls his eyes at me again. But, it makes it into the fully stuffed car as we get ready to roll on down the highway to get to the campus of higher learning. Pretty sure he was just humoring me as he packed it but hey, whatever it takes.I take no chances. *I* set it up in his teeny tiny dorm room (with which he will share with a roommate). Figured that while he might unplug it and shove it under the bed as soon as I leave, I at least gave it a shot.A few weeks go by before I happen to bring up the topic of "Hey, by the way, how's that air purifier working for you?" He says, "You were right (I try not to fall over hearing those rarely before uttered words). It makes a great white noise machine. We barely notice it on anymore." :::Victory dance on my end of the phone:::Before he's getting ready to come home for Thanksgiving, he happens to mention "Hey there's a red 'check filter' light that lit up on the machine. What am I supposed to do with this? It still seems to be working completely fine." Since he's going to be home for 7+ weeks (more pandemic disruption) before Spring semester starts up again, I just tell him to bring the whole machine home and we'll deal with it over break.Home comes the lad with his machine. We casually open it up to check the filter and "OMG!!!" Uh yes. This machine works and apparently works very well!! Mind you, I personally had installed the brand new and spiffy clean filter prior to sending it off to school. The dorm room was very tiny and was in fact pretty clean when we arrived. The boys chose not to use a rug in the room so it's not like there was "carpet fluff" to errantly fly around the room. They're both the studious, pretty overall clean guys who really couldn't do much to create dirt in the room as there were all kinds of pandemic guidelines/restrictions in place.But THIS (see photo) is what the machine captured between the late August & mid November! Pretty disgusting to see but also pretty darn awesome to see how well the machine worked.And the college lad? No more eye rolling when it comes to the mention of an air purifier. He is now completely sold on it. He recently came home for the summer & while most everything else from his dorm room got tossed into a corner of the basement not to resurface again until the trek back down to campus in August, I noticed that the air purifier (with a nice fresh & clean filter) is carefully set up in his bedroom & running 24/7. Catching any wayward dust particles....and serving as a good white noise machine.Buy this machine. It works. Pictures don't lie. I shared this pix on a college parents' message board. LOL Too bad I couldn't get commission on the ensuing sales because I can tell you, that a whole bunch of parents rushed to order one of these for their kids' dorm rooms after seeing the picture I took. I myself ordered another one (different size...larger) to place in our basement living area. And will be looking to order another one for our bedroom. The teen's not the only one sold on this machine. I am too!

    Image

  • dor******

    RESULTO ÚTIL PARA LA LIMPIEZA DEL AIRE EN LA HABITACIÓN

  • han******

    Apareil americain, acheté sur amazon.fr mais venu directement des Etas Unis, prise americain, INCOMPATIBLE avec le reseau europeen 230 V!! Il fallait un transformateur 110 Volts. Moi j'ai reussi a detruire l'appareil, vous devez prevoir un transformateur

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