Alen T500 Tower HEPA Air Purifier Review In 2022

The Alen T500 Tower HEPA Air Purifier is an impressive yet compact air cleaner that is well-balanced in its performance, dimension and price. Ideal for someone who is either fairly sensitive to the surrounding air quality, frequently suffering from common allergies (including asthma) or in need of an air purifier that is fairly simple to pick up, easy to maintain and most importantly consistent performance delivery throughout the year. Hit the break to learn more about this all-rounder Alen T500 Tower air purifier and the cost of owning one.
online price (US)**
±249.00 $$$/ 7

(annual filter cost ±44-88)

** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

Alen T500 Specification

ProductAlen T500
10 x 22 x 6 in
(25.4 x 55.9 x 15.2 cm)
Weight9 lb (4.1 kg)
Coverage (up to)500 sq. ft. (46 m2)
Airflow speed48 - 130 cfm (82 - 221 m3/h)
Dust free (CADR)159 cfm (270 m3/h)
Pollen free (CADR)159 cfm (270 m3/h)
Smoke free (CADR)159 cfm (270 m3/h)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
HEPA-Pure Filter TF60
6 - 12 months
+- 44
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ TechnologiesIonizer
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
HEPA-Silver Filter TF60-SILVER
6 - 12 months+- $59
HEPA-OdorCell Filter TF60-MP
6 - 12 months+- $89
HEPA-Fresh Filter TF60-CARBON
6 - 12 months+- $49
Noise level42 - 56 dB
Power usage level30 - 53 W
Timer/ Scheduler12 hour timer
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
WarrantyLifetime Limited Warranty
Email/ Phone support

Key Features

  • 3-stage filtration with 3 speed and built-in ionizer
  • Washable pre-filter
  • HEPA-Pure filter with optional filter upgrades
  • Changeable panel
  • Up to 12 hour programmable timer
  • Auto-off safety feature when the front cover is removed
  • Easy back cover filter change
  • Alen Lifetime limited warranty (registered and active filter subscription)
  • [Optional] filters - HEPA-Pure filter, HEPA-Fresh filter, HEPA-OdorCell filter

Design And Usability

Alen T500 dimension
10 x 22 x 6 in
(25.4 x 55.9 x 15.2 cm)
Alen T500 weight
9 lb (4.1 kg)

Currently, the smallest tower air purifier in Alen’s lineup, Alen T500 remains true to its conventional small tower size air purifier at 10 x 22 x 6 in and just under 9 pounds in weight. Finding a place to fit in the air purifier is a straightforward task as you could use it as a desktop air purifier, bedside, or even bring it along for travel/ staycation. On to usability and controls, there is a dated non-color top digital display. It will show basic information such as fan speed, filter indicator, timer. Controls are easy to use with a dedicated on/ off button for the Ionizer. sadly there is no air quality status in the machine due to the lack of sensors. Auto mode is not present either for the same reason. Other specifications in this 3-stage air purifier including Auto-off safety features, Smart Filter light indicator, UL listed, ENERGY STAR rated, ozone-safe, and Lifetime limited warranty (subscription needed).

Airflow, Coverage, And CADR

Alen T500 coverage
Purifying coverage
500 sq. ft. (46 m2)
Alen T500 fanspeed
Alen T500 has an impressive 500 sq. ft. purifying coverage for a tower air purifier. You could easily utilize T500 in an entire studio, living room, or bedroom at max speed. Airflow delivery rate is at 48 cfm lowest speed to 130 cfm at maximum speed. It is bot the quickest and is only limited to 3 fan speed (BreatheSmart series has 4).
Alen T500 dust CADR
159 cfm (270 m3/h)
Alen T500 pollen CADR
Pollen CADR
159 cfm (270 m3/h)
Alen T500 smoke CADR
Smoke CADR
159 cfm (270 m3/h)
The clean air delivery rate (CADR) is good for its category. It is at an average of 159 cfm between Dust, Pollen, and Smoke. Ideal for home use but if you have severe allergies or asthma, the higher variant BreatheSmart series would probably suit you better. Use the comparison link above to compare with other similar range tower air purifiers.

Recommended Read

Filters And Performance

Alen T500 has a familiar 3-stage filtration setup that most user would be acquainted with. The washable pre-filter traps large airborne particles like dust, hair and protect the HEPA filter from over-stressing with unnecessary pollutants. Stage 2 HEPA-Pure filter would concentrate on smaller, non-odor size particles that are not captured by pre-filter. The HEPA filter can remove 99.97% of microscopic allergens as small as 0.3 microns. For smoke, chemical, and odor related particles, upgrade the filter to HEPA-Fresh or HEPA-OdorCell filter. For mold and germs related allergens, upgrade to HEPA-Silver instead. Finally, the last-stage Ionizer would reduce the number of airborne particles and allergens floating in the air by diffusing negative ions.

Noise And Energy Usage

Alen T500 noise level
Noise level
42 - 56 dB
Alen T500 power consumption
Power consumption
30 - 53 W
Alen T500 42 - 56 dB noise level is subtle at low speed with pink noise at high speed. Most people would have no problem utilizing the air purifier throughout the night. Power consumption is reasonably cost-effective at a range of 30 watts to a maximum of 53 watts. Less than other BreatheSmart air purifiers but you would hardly notice the differences.
Noise TypeDecibels
Alen T50042 - 56 dB
Breathing10 dB
Rustling leaves20 dB
Whispering/ Quiet library30 dB
Light rainfall40-50 dB
Conversation50-60 dB
Vacuum cleaner/ Hair dryer/ Washing machine65-80 dB
City traffic80-90 dB

Pricing And Maintainence Cost

Alen T500 MRSP/ RSP
+- 249.00
Alen T500 annual filter replacement cost
Annual Filter Cost
+- 44 - 88
^ Replacement filters/ estimated cost
Alen T500 is not cheap for a tower air purifier, but for the performance you would get in such compact form, the price is justifiable in our opinion. Annual filter replacement cost is on the higher side as the recommended filter lifespan is between 6-12 months (easily achievable in most scenarios). If you are planning to save up on filter replacement costs, try purchasing it in a bundled via its official website or through Amazon.

Alen T500 VS The Challengers

Honeywell AirGenius 5 HFD320 Air Purifier review

Honeywell AirGenius 5 HFD320

A permanent filter air purifier that is easy to use with virtually zero maintenance. Filtration strength and depth are not on par with the T500 standard.


  • Comprehensive purifying coverage for a tower air purifier.
  • Easy to bring around thanks to the compact size and back handle.
  • Upgradable HEPA filters depending on your individual needs.
  • Covered by Alen lifetime warranty.
  • Ionizer function can be turned off.
  • Up to maximum of 12 hour timer.
  • Relatively subtle noise level even at the highest setting.


  • No stand-alone deodorization filter.
  • An optional filters purchase (HEPA-OdorCell) is required to deal with odors.
  • Lacks air quality sensors and Auto mode especially at this price point.
Alen T500

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.
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