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Honeywell True HEPA HPA300

Honeywell True HEPA HPA300 Air Purifier Review

The Honeywell HPA300 is one of the most popular HEPA air purifiers with over 2,000 reviews on Amazon and an impressive 4.3/5 rating.

Using a dual filtration process, it removes all kinds of allergens from the air including tiny pollutants as small as 0.3 microns.

The air purifier is rated for large rooms of up to 465 square feet, making it perfect for open style living areas, spacious bedrooms and any other large indoor space.

We love how quiet it is especially at lower fan speeds. We also think it looks great with its all-black ribbed design.

The air purifier is surprisingly affordable considering its powerful coverage. That’s why we picked it as the best value air purifier in our best air purifiers for mold 2019 guide. 

Read on for our full review.  


  • True HEPA filter- efficient air filtration
  • Large area coverage
  • Filter replacement indicators
  • Quiet operation
  • Easy to mount and to use – user manual is available.
  • Power saving as it does not use a lot of power
  • Has a timer of different hours.
  • 3 fan modes      
  • Warranty and customer service available all week through.


  • It does not have a sensor  
  • It lacks auto modes for automatic adjustments

Best features

Once in the air purifier, the air goes through two filtration stages before it is released back into the room.

1. Pre filter – The pre filter has an activated carbon filter in it. It helps in absorbing VOCs, gases, odors and other large particles like hair. This filter requires replacement within three months.

2. True HEPA filter – The pre filter only removes large particles like hair while other smaller ones like Pet dander, mold, viruses, bacteria and pollen are removed by the true HEPA filter. This filter removes at least 99.97 percent of allergens and tiny pollutants as small as 0.3 microns.

Large coverage

Honeywell True HEPA review

The Honeywell HPA 300 covers a large are of up to 465 square feet. In this kind of space, the air purifier performs five air changes in one hour. This means that air will pass through the purification process again after every 12 minutes.

Filter replacement indicators

The Honeywell Hpa 300 is equipped with 2 led filter replacements indicators.  There is one indicator for each filter. This comes in handy especially to those who can’t remember the filter change dates.

Quiet operation

Honeywell True HEPA HPA300 Air Purifier Review

Large air purifiers are normally noisy. Though the Honeywell Hpa 300 is relatively big, it operates more quietly than similar sized air purifiers.

It specifically has a smooth and low operation especially when it is operating on lower fan speeds and due to its manageable noise operation it comes in handy as it can also operate at night without causing disturbances.


The Honeywell Hpa 300 has a timer which you can set upon the duration you want it to run. You can set it to run at a value of two, four or eight hours.

Three fan modes

The Honeywell Hpa 300 has 3 fan modes:  Allergen, General clean and germ mode.

For maximum efficiency especially in extreme allergies situations, the turbo mode is the best as it maximizes the Honeywell Hpa 300’s fan speed.


Honeywell True HEPA HPA300 Air Purifier Review

With its high efficiency air purification process, the Honeywell Hpa 300 air purifier will need frequent filter replacement especially on the pre filter which will need to be replaced after every three months.

However the HEPA filter may take a little longer to need a replacement as it may even go for a whole year without being replaced.

Many makes of air purifiers are genuinely equipped with automatic smart features and this may work to its disadvantage as it lacks them.

It is however equipped with a timer which you can manually set at different values of times to run through.


Dimensions: 9.2 x 20 x 22.2 inches

Product Weight: 21 pounds

Shipping weight: 21.6 pounds

Warranty: 5 year warranty and 7 days a week customer service

Coverage: 465 square feet


The Honeywell HPA300 is a decent air purifier that can effectively remove dust and smoke from your home without much issue.

However, it lacks some convenient features such as such as an auto mode which would allow you to automatically adjust it using remote control.

When working at full speed it can be a bit noisy but overall this air purifier ranks best for removing dust particles and other allergens, this comes in handy especially to those with asthma and allergens struggles.

It is an ideal choice especially to those leaving in smoky and dusty areas.

About the Author Tom Hanson

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