Philips Air Purifier AC4084/01

Philips Air Purifier AC4084/01 Review

This could be the golden era for air purifier as more and more brands are coming up with their own lineup. Philips is certainly no stranger in the healthcare department for both consumer and professional. Their top of the line model AC4084/01 is one of the few air purifiers that able to cover large room with applicable area of 40 m<sup>2</sup>. With built-in intelligent dual sensors, advanced filtration system and a host of features, let’s see what this air purifier has to offer.
± 699 p
     Annual filter ^    
Online price*
Lazada Singapore
Lazada Malaysia

Philips AC4084/01 Specification

ProductPhilips AC4084/01
390 x 586 x 243 mm
(15.4 x 23.1 x 9.6 in)
Weight10 kg (22 lb)
Coverage (up to)40 m2 (431 ft2)
Humidifying(H) coverage
Airflow speed210 - m3/h (124 - 0 cfm)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ Technologies
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
Noise level34 - 50 W
Humidifying(H) Noise level
Power consumption20 W
Humidifying(H) power
Humidifying(H) capacity
Humidifying(H) tank
Timer/ Scheduler
More color options
Auto mode
Air qualityAQ indicator
Filter change indicator
Wi-Fi/ BTBluetooth
Remote control
Child lock
Email/ Phone support
Product image

Key features

  • 1/4/8 hours easy-to-set timer
  • Healthy air protect alert warns you when to replace filter
  • Healthy air protect lock ensures healthy air always
  • 3-step light indicators clearly show air quality level
  • 3-step fan speed lets you adjust airflow to your liking
  • Fully automatic operation ensures hassle free functioning
  • Smart air quality sensor measures and controls air quality
  • 3-step humidity setting adjusts humidity to your liking
  • With advanced filtration system
  • Intelligent dual sensors give total feedback on air quality

Philips AC4084/01 review

  • Reasonable price with good coverage and airflow rate.
  • 3 speed with automatic mode.
  • Humidifying features with 3 speed setting.
  • Built-in intelligent dual sensors.
  • Lack of child lock, casters.
  • Only 3 years filter lifespan.
Philips AC4084/01 dimension
390 x 586 x 243 mm
(15.4 x 23.1 x 9.6 in)
Philips AC4084/01 weight
10 kg (22 lb)

Philips AC4084/01 is measured at 39 x 58.6 x 24.3 cm with the weight of 10 kg. It is the bulkiest and heaviest model among the other Philips air purifier lineup but given its features and applicable area, I would say it is still justifiable. A classic white boxy design that not only looks solid, the top left “eye” (light indicator – more on that later) really compliments well to its design in looking modernistic. Overall the entire unit is well built although it might be too bulky for some that has very limited space.

ModelDimension (W x H x D)Weight
Philips AC4084/0139 x 58.6 x 24.3 cm10 kg
Philips AC4014/0135 x 62.3 x 19.6 cm6.1 kg
Philips AC4012/0034.3 x 52 x 19.8 cm5.35 kg
Philips AC4025/0033.3 x 51 x  18.6 cm4.5 kg

Let’s guide you through on some of its features. It comes with a standard 3 set of timer that can be pre-set to automatically switch off the unit. An auto reminder that will remind you to replace the filter and best of all, it will stop and lock the unit from functioning when one of the filters is dirty or damaged. A very good feature I would say. 3-step light indicators (the “eye”) that show the current room air quality level: Blue – Good; Purple – Fair; Red – Bad. Adjustable 3-step fan speeds with auto setting that will automatically select the correct speed based on the surrounding air quality. This is achievable with its smart air quality sensor. 3-step humidity settings to adjust the humidity level. Standard four stage filtration system: Pre-filter – Capture big particles e.g. dust, hair; Active Carbon (deodorization) filter – remove odors and gases; HEPA filter – eliminate up to 0.3 micron bacteria e.g. pet dander, pollen; Humidification filter – eliminate bacteria e.g. germs, molds. Built-in intelligent dual sensors that will auto measures and display feedback of the air particle with humidity level.

Applicable area, airflow, noise level and power input

With applicable area of 40 m2 and 3-step settings for both fan speed and humidity, Philips AC4084/01 airflow level is pretty much on par with other air purifier at average of 210 m³/h. The noise level is standard as well at 34 minimum and 50 maximum. Power consumption is surprisingly low at average of 20 watts compared with other brand however, there is no minimum or maximum figure provided. Overall the performance for Philips AC4084/01 is pretty good and it is fully adjustable based on your own preference.

Philips AC4084/01210 m³/h
Philips AC4014/01237 m³/h
Philips AC4012/00128 m³/h
Philips AC4025/00127 m³/h

Final thoughts

Philips AC4084/01 is a solid and well-built air purifier that comes with abundant of features at a reasonable price. Its weight and bulkiness might be a turn-off for some (even though we seen bulkier unit with less feature), the lack of child lock, casters/ wheels/ rollers for easy moving and of course, limited 3 years filter life span compared with other competitors that offer up to 10 years filter life span. However, considering the number of service centers throughout the nation, Philips air purifier AC4084/01 is a safe choice for after service or replacement parts (if required).

Covered against
Philips AC4084/01 VS Dust



Philips AC4084/01 VS Pollen



Philips AC4084/01 VS Hair

Hair/ Pet hair


Philips AC4084/01 VS Dust mites

Dust mites


Philips AC4084/01 VS Mold/ Mildew

Mold/ Mildew


Philips AC4084/01 VS Pet dander

Pet dander


Philips AC4084/01 VS Virus/ Germ

Virus/ Germ


Overall Philips AC4084/01 efficient plus purifying coverage and airflow input/ output is terrific in capturing large airborne pollutants such as dust, hair, pet hair. pit against allergens, irritants, viruses and bacteria, Philips AC4084/01 combined , fanspeed and filtration is at somewhat fine grade in eliminating pet dander, dust mites, pollen, mold and mildew. 

Verdicts and ratings

Build quality
Airflow delivery
Particle Filtration
Smoke Filtration
Philips Air Purifier AC4084/01

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