Honeywell HPA300 True HEPA Allergen Remover

Honeywell HPA300 True HEPA Allergen Remover is excellent air purifier designed to clean and to keep clean the air in extra large rooms and even, up to the point, in the adjacent rooms.

Honeywell HPA300 combines active carbon filter and true HEPA air filter(s) to capture 99.97% of 0.3 microns and larger particles, keeping the home clean and safe for living.

Updated: June 12, 2019.honeywell hpa300 1

 Honeywell HPA300 physical dimensions are 20.8 x 10.83 x 22.38 inches (~53 x 27.5 x 57 cm) - it is rather large unit and personally, it should be positioned on the floor.

During operation at the maximum fan speed, unit requires ~130 W of power.

The CADR rating indicates the volume of clean air delivered into the room and the higher the CADR rating, the faster the unit filters the air.

Maximum CADR rating of Honeywell HPA300 (brand new filters) is 300 for tobacco smoke, 320 for dust and 300 for pollen, making this unit suitable for rooms up to 465 sq. ft.

Honeywell HPA300 Controls

Although HPA300 is very capable unit, its controls are rather simple and easy to use.

Honeywell HPA300 comes with automatic shut-off timer, with three possible settings: two, four or eight hours. Use of timer is not required and the unit can operate continuously and keep home air clean over longer period of time.

honeywell hpa300 2

To avoid causing issues during night and other low level conditions, HPA300 features control panel light dimmer.

Note: HPA300 is simple to operate unit, but it is highly recommended to read the manual first, to get accustomed with the new unit.

HPA300 features 3 cleaning modes:

- allergen mode optimizes allergen capturing performance during allergen season and is recommended mode for people having breathing issues.

- general cleaning mode is used for general, everyday air cleaning, and if you are unsure which mode to use, use this one.

- germ cleaning mode optimizes germ capturing performance. It should be used during cold & flu season.

Also, unit has turbo cleaning mode which is used for fast odor reduction and air cleaning. To use this mode, unit already must be in one of the previously mentioned modes (allergen, general, germ).

 Honeywell HPA300 Air Filters

Honeywell HPA300 comes with two different air filters: active carbon filter and true HEPA air filter (consisting of three actual mechanical filters).

honeywell hrf ap1 hrf app1

Active carbon filter HRF-AP1 help reduce common household and pets odors and it traps larger particles like fibers, hair, pet fur, dust, lint and similar and it increases the life of the main true HEPA air filter.

Note that there is also HRF-APP1 version with zeolite added for extra odor reduction performance and for capturing harmful gases.

honeywell hrf r3Honeywell HRF-R3 is true HEPA air filter - it is one set of three filters and all three filters are replaced at once.

On average, activated carbon filter is replaced every three months and HEPA filter is replaced once a year.

To alert the user that it is time to replace the filters, Honeywell HPA300 comes with the electronic filter replacement reminders.

Note: none of these air filters are washable. When it is time to change them, use OEM filters only. Price difference between HRF-AP1 and HRF-APP1 differ from time to time, and if you find HRF-APP1 on sale, give it a try.

Honeywell HPA100, HPA200 and HPA300 HEPA Air Purifiers - Comparison and Recommendation

Honeywell HPA100, HPA200 and HPA300 HEPA Air Purifiers are three very similar air purifier units in terms of quality of air filtration, design, warranty and use.

Their most important features and specifications are given in the following table:

Model Honeywell HPA100 HEPA Air Purifier  Honeywell HPA200 HEPA Air Purifier  Honeywell HPA300 HEPA Air Purifier 
Photo honeywell hpa100 table honeywell hpa200 table honeywell hpa300 table
Recommended Room Size Medium Rooms - up to 155 sq. ft. Large Rooms - up to 310 sq. ft. Extra Large Rooms - up to 465 sq. ft.
CADR Rating - Smoke 100 200 300
 CADR Rating - Dust 106 190 320
 CADR Rating - Pollen 100 180 300
HEPA Filter HRF-R1 (1 Filter)  HRF-R2 (2 Filters)  HRF-R3 (3 Filters) 
 Odor Reducing Filter HRF-AP1/HRF-APP1  HRF-AP1/HRF-APP1  HRF-AP1/HRF-APP1 
Dimensions (inches) 13.54 x 8.9 x 13.94  17.72 x 10.05 x 18.86  20.08 x 10.83 x 22.32
Warranty 5-Year Limited 5-Year Limited  5-Year Limited 
Amazon Link Honeywell HPA100 Honeywell HPA200 Honeywell HPA300

Note: Amazon affiliate links open in the new windows, feel free to check them for most up to date offers and prices.

As one can see, main difference is in physical size, CADR rating and number of HEPA filters.

Honeywell HPA300 is the largest of the them all and it requires most space. However, its CADR ratings are also the highest and its recommended room size is the largest - it can clean air in the recommended room size up to 5x per hour.

On the other hand, Honeywell HPA100 Air Purifier can be placed even on the desk, although with the height of almost 14 inches (~35 cm), it is still one of the tallest potential desk air purifiers.


Long Story Short: Honeywell HPA300 HEPA Air Purifier is excellent and affordable air purifier recommended for people with pets and kids and everyone having issues with various airborne particles and air gases that can cause health issues.

Some users complain about changing the active carbon filter every three months, but if you follow procedure in the manual, it can be replaced rather quickly.

For the latest offers and prices, check Honeywell HPA300 True HEPA Allergen Remover Amazon link (link opens in the new window).