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Xiaomi Smart Air Purifier 4 XM200054 Review | 46 Data compared

Avg. price in UK: ~£140
Avg. price in US: ~$150
Max. CADR: 400 m³/h
Maximum room area: 48 m²
Maximum noise level: 64 dB
HEPA filter: yes
Weight: 5.6 kg

Xiaomi Smart Air Purifier 4 XM200054 review. Compare 46 technical specifications and user reviews to see how this product ranks in the Air Purifiers category and whether it is worth buying.

7.3

Very good

6.9

Good

9.0

Exceptional

5.0
Bedroom use
Score components:
35.0%
1.0
Maximum noise level
30.0%
10
Night mode
20.0%
4.0
Maximum room area
15.0%
5.6
Weight
8.8
Allergy relief
Score components:
35.0%
9.0
Max. CADR
30.0%
10
HEPA filter
20.0%
5.5
Number of filtration stages
15.0%
10
Washable prefilter
8.8
Smoke removal
Score components:
35.0%
10
Activated carbon filter
30.0%
9.0
Max. CADR
20.0%
5.5
Number of filtration stages
15.0%
10
Air quality indicator

Best prices in UK

Best rankings

#3 in Best Xiaomi Air Purifiers
#33 in Best Smart Air Purifiers
#42 in Best Air Purifiers for Dust
#50 in Best Air Purifiers for Smoke
#50 in Best Air Purifiers with HEPA Filters
#51 in Best Air Purifiers for Mold
#52 in Best Air Purifiers
#52 in Best Air Purifiers for Pets
#127 in Best Air Purifiers for Bedrooms

Verdict

The Xiaomi Smart Air Purifier 4 features a Particle CADR of up to 400m³/h, delivering 6660L of purified air per minute to efficiently cover an area of 28–48m² and clean a 20m² room in about 10 minutes. Main characteristics and pros include a high-efficiency three-in-one filtration system that eliminates 99.97% of 0.3μm particles, negative air ionization, an OLED touchscreen with real-time PM2.5 monitoring, smart Mi Home app/voice control, and a low-noise 32.1dB night mode. However, notable cons include the lack of historical air quality data tracking within the app, full advanced manual settings being locked behind app usage rather than the physical console, and the requirement of proprietary filter replacements.

Technical Specifications of air purifier Xiaomi Smart Air Purifier 4 XM200054

Overall score

7.3

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Popularity

What it is: An indicator based on the number of reviews received by products in the Air Purifiers category.

When it matters: When you prefer products in the Air Purifiers category that have been chosen and reviewed by many other buyers.

Performance

5.4

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Power

What it is: The electrical power consumption of the air purifier during operation, measured in watts (W).

When it matters: Helpful for estimating long-term electricity costs, particularly when running the unit continuously day and night.

Importance: HIGH

Max. CADR

What it is: The Clean Air Delivery Rate (CADR), measuring the volume of purified air delivered per hour in cubic metres.

When it matters: Crucial for determining how rapidly the purifier circulates and cleans room air, especially for severe allergies or larger spaces.

Importance: HIGH

Maximum room area

What it is: The maximum recommended floor area (in square metres) that the air purifier can effectively treat.

When it matters: Essential for matching the purifier's airflow capacity to your room size so all air is filtered thoroughly.

Importance: HIGH

N. of speeds

What it is: The number of manual airflow speed levels available to choose on the air purifier.

When it matters: Provides flexible control between whisper-quiet low speeds for sleeping and powerful high speeds for fast room clearing.

Importance: MEDIUM

Maximum noise level

What it is: The sound level emitted by the air purifier when running at its highest fan speed, measured in decibels (dB).

When it matters: Important if you plan to use the purifier in bedrooms, nurseries, or home offices where loud fan noise causes disturbance.

Importance: HIGH

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Features

9.2

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Air quality indicator

What it is: An optical or laser sensor system displaying real-time indoor pollution levels via color rings or numerical values.

When it matters: Provides immediate visual feedback on air cleanliness and confirms that the purifier is working effectively.

Importance: MEDIUM

Continuous purification

What it is: Engineered motor and filter architecture designed for safe, uninterrupted 24/7 operation without thermal degradation.

When it matters: Essential for maintaining permanently low allergen and dust concentrations in polluted urban areas or high-pollen seasons.

Importance: LOW

Auto mode

What it is: An intelligent operating mode that automatically increases or decreases fan speed based on live sensor pollution readings.

When it matters: Maximizes convenience and saves electricity by running quietly on low speed and ramping up only when pollution is detected.

Importance: MEDIUM

Timer

What it is: A programmable shut-off countdown timer that turns off the air purifier automatically after a set number of hours.

When it matters: Convenient for running the unit for a specific duration before leaving home or going to bed without wasting electricity.

Importance: LOW

Maximum timer

What it is: The longest selectable countdown duration available on the air purifier's timer, expressed in hours.

When it matters: Relevant if you prefer setting extended automated operating cycles, such as a full 8-hour workday or 12-hour overnight window.

Importance: LOW

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Design

5.9

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Color

What it is: The primary exterior color and aesthetic finish of the air purifier housing.

When it matters: Important for ensuring the appliance blends harmoniously into your room decor and furniture style.

Importance: LOW

white

Material

What it is: The primary manufacturing material used for the outer casing, such as ABS plastic, polycarbonate, or aluminum.

When it matters: Influences structural rigidity, scratch resistance, premium appearance, and ease of wiping clean.

Importance: LOW

plastic

Display

What it is: An integrated digital screen showing active fan speed, particulate pollution numbers, filter health, and active timers.

When it matters: Enables quick visual checks of air metrics and purifier settings directly on the device without picking up your phone.

Importance: LOW

Display position

What it is: The physical placement of the display screen on the body of the air purifier (e.g., top panel or front facade).

When it matters: Affects viewing convenience: top displays are easiest to read while standing, while front displays are visible from across the room.

Importance: LOW

front

Control type

What it is: The user interface mechanism for operating the device, such as capacitive touch keys, push buttons, or rotary dials.

When it matters: Determines tactile responsiveness, ease of operation in dark rooms, and durability over years of regular use.

Importance: LOW

touch, app, voice

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Xiaomi Smart Air Purifier 4 XM200054 vs the average air purifier

Why is Xiaomi Smart Air Purifier 4 XM200054 better than the average air purifier?

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66.7% higher CADR
Xiaomi Smart Air Purifier 4 XM200054 provides a higher clean air delivery rate than the average air purifier (400 m³/h vs 240 m³/h).
What it is: The Clean Air Delivery Rate (CADR), measuring the volume of purified air delivered per hour in cubic metres.
When it matters: Crucial for determining how rapidly the purifier circulates and cleans room air, especially for severe allergies or larger spaces.
Importance: HIGH
Xiaomi Smart Air Purifier 4 XM200054 provides a higher clean air delivery rate than the average air purifier (400 m³/h vs 240 m³/h).400 m³/h vs 240 m³/h
Supports Wi‑Fi
Xiaomi Smart Air Purifier 4 XM200054 supports Wi‑Fi; the average air purifier does not.
What it is: Wireless connectivity enabling smartphone app pairing for remote operation, scheduling, and live air quality tracking.
When it matters: Allows you to inspect home pollution levels from work and turn on the purifier so you return home to clean air.
Importance: MEDIUM
Xiaomi Smart Air Purifier 4 XM200054 supports Wi‑Fi; the average air purifier does not.
16 hours longer timer
Xiaomi Smart Air Purifier 4 XM200054 offers a longer timer duration than the average air purifier (24 hours vs 8 hours).
What it is: The longest selectable countdown duration available on the air purifier's timer, expressed in hours.
When it matters: Relevant if you prefer setting extended automated operating cycles, such as a full 8-hour workday or 12-hour overnight window.
Importance: LOW
Xiaomi Smart Air Purifier 4 XM200054 offers a longer timer duration than the average air purifier (24 hours vs 8 hours).24 hours vs 8 hours
Has a child lock
Xiaomi Smart Air Purifier 4 XM200054 has a child lock; the average air purifier does not.
What it is: A safety lock feature that disables the on-device control panel buttons to prevent unintended changes.
When it matters: Essential in households with curious toddlers or pets who might accidentally switch off the purifier or alter speed settings.
Importance: MEDIUM
Xiaomi Smart Air Purifier 4 XM200054 has a child lock; the average air purifier does not.
Supports voice control
Xiaomi Smart Air Purifier 4 XM200054 supports voice control; the average air purifier does not.
What it is: Integration with voice assistants such as Amazon Alexa, Google Assistant, or Apple Siri for voice commands.
When it matters: Offers convenient hands-free control to adjust fan speeds, check filter status, or turn the purifier on and off.
Importance: LOW
Xiaomi Smart Air Purifier 4 XM200054 supports voice control; the average air purifier does not.
Supports 360° purification
Xiaomi Smart Air Purifier 4 XM200054 supports 360° purification; the average air purifier does not.
What it is: A cylindrical or multi-directional intake design that draws in polluted room air from all surrounding angles.
When it matters: Improves airflow circulation and offers versatile room placement without needing to position the intake toward open space.
Importance: MEDIUM
Xiaomi Smart Air Purifier 4 XM200054 supports 360° purification; the average air purifier does not.
Has an ionizer
Xiaomi Smart Air Purifier 4 XM200054 has an ionizer; the average air purifier does not.
What it is: An auxiliary electronic feature releasing negative ions that attach to airborne particles, causing them to clump and settle faster.
When it matters: Acts as a supplementary cleaning boost for fine dust, though buyers sensitive to ozone should ensure it can be toggled off.
Importance: LOW
Xiaomi Smart Air Purifier 4 XM200054 has an ionizer; the average air purifier does not.
Supports delayed start
Xiaomi Smart Air Purifier 4 XM200054 supports delayed start; the average air purifier does not.
What it is: A delayed activation timer allowing you to set a delay before the air purifier automatically turns on.
When it matters: Useful for scheduling the purifier to begin cleaning shortly before you arrive home so you step into fresh air without running it all day.
Importance: LOW
Xiaomi Smart Air Purifier 4 XM200054 supports delayed start; the average air purifier does not.
66.7% higher CADR
Xiaomi Smart Air Purifier 4 XM200054 provides a higher clean air delivery rate than the average air purifier (400 m³/h vs 240 m³/h).
Supports 360° purification
Xiaomi Smart Air Purifier 4 XM200054 supports 360° purification; the average air purifier does not.
Supports Wi‑Fi
Xiaomi Smart Air Purifier 4 XM200054 supports Wi‑Fi; the average air purifier does not.
16 hours longer timer
Xiaomi Smart Air Purifier 4 XM200054 offers a longer timer duration than the average air purifier (24 hours vs 8 hours).
Has a child lock
Xiaomi Smart Air Purifier 4 XM200054 has a child lock; the average air purifier does not.
Supports voice control
Xiaomi Smart Air Purifier 4 XM200054 supports voice control; the average air purifier does not.
Has an ionizer
Xiaomi Smart Air Purifier 4 XM200054 has an ionizer; the average air purifier does not.
Supports delayed start
Xiaomi Smart Air Purifier 4 XM200054 supports delayed start; the average air purifier does not.
2.3 cm narrower width
Xiaomi Smart Air Purifier 4 XM200054 is narrower than the average air purifier (25 cm vs 27.3 cm).

Why is Xiaomi Smart Air Purifier 4 XM200054 worse than the average air purifier?

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11 dB higher maximum noise level
Xiaomi Smart Air Purifier 4 XM200054 runs louder at maximum speed than the average air purifier (64 dB vs 53 dB).
Lower Manufacturer warranty
Xiaomi Smart Air Purifier 4 XM200054 offers lower Manufacturer warranty than the average air purifier (1 years vs $$$).
7.5 W lower power
Xiaomi Smart Air Purifier 4 XM200054 has a lower power output than the average air purifier (30 W vs 37.5 W).
1 m² smaller room area
Xiaomi Smart Air Purifier 4 XM200054 covers a smaller room area than the average air purifier (48 m² vs 49 m²).
0.3 m shorter power cord
Xiaomi Smart Air Purifier 4 XM200054 features a shorter power cord than the average air purifier (1.5 m vs 1.8 m).
3 cm greater depth
Xiaomi Smart Air Purifier 4 XM200054 is deeper than the average air purifier (25 cm vs 22 cm).
22.5% higher weight
Xiaomi Smart Air Purifier 4 XM200054 is heavier than the average air purifier (5.6 kg vs 4.57 kg).
5.5 cm taller height
Xiaomi Smart Air Purifier 4 XM200054 is taller than the average air purifier (55.5 cm vs 50 cm).
3430.48 cm³ larger external volume
Xiaomi Smart Air Purifier 4 XM200054 has a larger overall volume than the average air purifier (34687.5 cm³ vs 31257.025 cm³).
11 dB higher maximum noise level
Xiaomi Smart Air Purifier 4 XM200054 runs louder at maximum speed than the average air purifier (64 dB vs 53 dB).
What it is: The sound level emitted by the air purifier when running at its highest fan speed, measured in decibels (dB).
When it matters: Important if you plan to use the purifier in bedrooms, nurseries, or home offices where loud fan noise causes disturbance.
Importance: HIGH
Xiaomi Smart Air Purifier 4 XM200054 runs louder at maximum speed than the average air purifier (64 dB vs 53 dB).64 dB vs 53 dB
Lower Manufacturer warranty
Xiaomi Smart Air Purifier 4 XM200054 offers lower Manufacturer warranty than the average air purifier (1 years vs $$$).
What it is: This attribute shows the air purifier's manufacturer warranty.
When it matters: It matters if longer manufacturer coverage is important to you.
Importance: MEDIUM
Xiaomi Smart Air Purifier 4 XM200054 offers lower Manufacturer warranty than the average air purifier (1 years vs $$$).1 years vs 2 years
7.5 W lower power
Xiaomi Smart Air Purifier 4 XM200054 has a lower power output than the average air purifier (30 W vs 37.5 W).
What it is: The electrical power consumption of the air purifier during operation, measured in watts (W).
When it matters: Helpful for estimating long-term electricity costs, particularly when running the unit continuously day and night.
Importance: HIGH
Xiaomi Smart Air Purifier 4 XM200054 has a lower power output than the average air purifier (30 W vs 37.5 W).30 W vs 37.5 W
0.3 m shorter power cord
Xiaomi Smart Air Purifier 4 XM200054 features a shorter power cord than the average air purifier (1.5 m vs 1.8 m).
What it is: The total physical reach of the supplied electrical power cord, measured in metres (m).
When it matters: Determines optimal placement flexibility relative to wall power outlets without needing extension cables.
Importance: LOW
Xiaomi Smart Air Purifier 4 XM200054 features a shorter power cord than the average air purifier (1.5 m vs 1.8 m).1.5 m vs 1.8 m
3 cm greater depth
Xiaomi Smart Air Purifier 4 XM200054 is deeper than the average air purifier (25 cm vs 22 cm).
What it is: The front-to-back depth measurement of the air purifier, in centimetres (cm).
When it matters: Determines how far the purifier protrudes outward into walkways or away from walls.
Importance: LOW
Xiaomi Smart Air Purifier 4 XM200054 is deeper than the average air purifier (25 cm vs 22 cm).25 cm vs 22 cm
22.5% higher weight
Xiaomi Smart Air Purifier 4 XM200054 is heavier than the average air purifier (5.6 kg vs 4.57 kg).
What it is: The total physical net weight of the air purifier without packaging, measured in kilograms (kg).
When it matters: Important if you frequently carry the purifier between rooms, to different floors, or place it on furniture.
Importance: MEDIUM
Xiaomi Smart Air Purifier 4 XM200054 is heavier than the average air purifier (5.6 kg vs 4.57 kg).5.6 kg vs 4.57 kg
5.5 cm taller height
Xiaomi Smart Air Purifier 4 XM200054 is taller than the average air purifier (55.5 cm vs 50 cm).
What it is: The vertical height of the air purifier unit, measured in centimetres (cm).
When it matters: Important for ensuring the unit fits underneath tables, under low window sills, or onto designated shelves.
Importance: LOW
Xiaomi Smart Air Purifier 4 XM200054 is taller than the average air purifier (55.5 cm vs 50 cm).55.5 cm vs 50 cm
1 m² smaller room area
Xiaomi Smart Air Purifier 4 XM200054 covers a smaller room area than the average air purifier (48 m² vs 49 m²).
What it is: The maximum recommended floor area (in square metres) that the air purifier can effectively treat.
When it matters: Essential for matching the purifier's airflow capacity to your room size so all air is filtered thoroughly.
Importance: HIGH
Xiaomi Smart Air Purifier 4 XM200054 covers a smaller room area than the average air purifier (48 m² vs 49 m²).48 m² vs 49 m²

Graphic comparison of Xiaomi Smart Air Purifier 4 XM200054 and other products in the Air Purifiers category

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Third-party reviews

United Kingdom

United States

(Reviews last updated: August 2026)

What customers like about Xiaomi Smart Air Purifier 4 XM200054?

Excellent value for money with low power consumption and affordable replacement filters
Highly efficient at eliminating cigarette smoke, cooking fumes, and pet odors
Extremely quiet operation, especially in sleep and low-speed modes
Clear OLED touchscreen display providing real-time air quality, temperature, and humidity readings
Seamless smart home integration via the Mi Home app, Google Assistant, and Amazon Alexa

What customers dislike about Xiaomi Smart Air Purifier 4 XM200054?

The built-in ionizer can only be disabled via the mobile app, with no physical button on the unit
White plastic finish can degrade or discolor over time due to dust buildup
Short power cord limits placement flexibility away from walls
Auto-mode can occasionally be too lenient or slow to ramp up fan speeds automatically

Expert reviews

indianexpress.com

24/04/2023

Summary of the review

Xiaomi Smart Air Purifier 4 review: A good option for urban households

The Indian Express review of the ₹14,999 Xiaomi Smart Air Purifier 4 highlights a feature-rich device featuring a 360-degree intake, an easy-to-clean child-safe grill, a clear OLED display, quiet operation, and strong smart home integration. While performance is strong, the review notes drawbacks including the lack of a built-in handle for portability, the need for a screwdriver to clean the top fan, and concerns regarding the availability of replacement filters.

hindustantimes.com

10/05/2023

Summary of the review

Xiaomi Smart Air Purifier 4 adds negative air ionization that works silently

The Hindustan Times review of the Xiaomi Smart Air Purifier 4 describes it as a minor, iterative update featuring the same reliable HEPA filter system and design, while adding a user-friendly, removable fan grill for easier maintenance and a toggleable negative ionizer. While maintaining effective, smart-connected air cleaning, the device's primary drawbacks include a higher ₹14,999 price tag, stiff competition, and potential long-term filter availability concerns.

cravingtech.com

31/03/2023

Summary of the review

Xiaomi Smart Air Purifier 4 Review - Great for large rooms

The Craving Tech review highlights the Xiaomi Smart Air Purifier 4 as a high-performing, elegant device with a robust 3-in-1 filtration system, an accurate air quality sensor, and convenient smart assistant integration. While praised for its performance, the review notes the lack of a carry handle for portability and the requirement of a screwdriver for accessing internal compartments as notable cons.

digitalcitizen.life

03/10/2025

Summary of the review

Xiaomi Smart Air Purifier 4 review: efficient and elegant - Digital Citizen

The Xiaomi Smart Air Purifier 4 is an efficient, elegant device covering up to 48 square meters with a 3-layer, 500g activated carbon filter capable of removing 99.97% of 0.3μm particles. Its strengths include highly responsive air-quality sensors, seamless app integration, and a quiet sleep mode, while limitations include poor cooling capacity and limited historical data tracking.

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