Full-room purification
in the time it takes to read a bedtime storyXiaomi Smart Air Purifier 4 Pro has a Particle CADR of up to 500m³/h*, and is able to release 8330L* of clean air per minute. The purified air is able to reach every corner of your home, so you and your family can breathe healthy all the time.
Clean air output per minute*
8330L
All-round air intake
360°
Effective coverage area*
35–60m²
11min
Approx. purification time for 30m² bedroom
15min
15min
Approx. purification time for 40m² living room
Clean air that is visible
with comprehensive monitoring and real-time displayPM2.5/PM10 dual-effect laser sensorTargeted purification that leaves pollutants with nowhere to hideComprehensive monitoring of air-quality changes for more targeted, efficient purification. In Auto Mode your purifier monitors real-time air quality and automatically adjusts the purification speed.
PM2.5-PM10
Detection of coarse particles such as pollenIndoor monitoring for pollen, ash, spores, pet dander and plant epidermis etc.PM2.5
Detection of fine particlesIndoor monitoring for small inhalable pollutants, such as invisible particles in smoke etc.Clean airLow-speed purificationDirty airHigh-speed purification
OLED displayIntuitive display, easy-to-control interface Intuitive indoor air-quality data with the real-time PM2.5/PM10 display and colour-coded light strip. Adjust your purification settings with the simple touch control buttons, one light touch to fulfil your air-quality needs.
Fresh and cleanLow pollutionModerate pollutionHigh pollution
Just one filter for up to one year's usage
Everyday freshness with a long-lasting filterThe filter, made from large-area high-efficiency filter and large volume high-quality activated carbon, can last 6-12 months. No need for frequent filter replacement.
High-efficiency filter expanded area*
24000cm²
High-quality activated carbon content*
650000mg
99.97% elimination of 0.3μm particles*
Three-in-one filtration for high-efficiency purificationThe Xiaomi Smart Air Purifier 4 Pro features a three-in-one filter, including a primary filter, the Xiaomi's High Efficiency Filter, and a high-quality activated carbon filter, which work together to purify your air and keep you healthy.
Pet hair
Pollen
Dust
Smoke
Dander
Cotton fibre
TÜV Rheinland Allergy Care Certification Strict allergen filtration guaranteedCertified by the authoritative TÜV Rheinland,Xiaomi Smart Air Purifire 4pro is proven to effectively filter out allergens in the air
A hero for animal loversPet hair and dander filtration
Allergy season at easePollen filtration
Xiaomi Smart Air Purifier 4pro can effectively reduce H1NI virus in the air Xiaomi Smart Air Purifier 4pro can effectively reduce Escherichia coli，Staphylococcus aureus and Streptococcus pneumoniae in the air
High-quality activated carbon
Odour elimination for lasting freshnessActivated carbon has a high adsorption rate, able to eliminate odours and keep your air fresh.
Pet odours
Cooking fumes
VOC
Formaldehyde, toluene
Other odours
Formaldehyde removal improved by 160%*
Eliminate invisible threats and protect your lovedThe powerful filter removes harmful gases including formaldehyde and toluene to clean your air for better breathing
185m³/h
FCADR*
Negative air ionization
Stale-air elimination to keep your home freshEnhanced air purification with dust cleaning that will make you feel as though you're in the forest.
Smart control
Start your air purification anywhere, anytime"Use the Mi Home/Xiaomi Home app to activate your air purifier on the move, so your home is fresh from the moment you arrive.
Remote control
Timed on/off
Adjustable settings
Air quality
Child lock
Filter replacement remindersSimply change your filter when recommended
Voice-control supportActivate your purifier with your voice*
Low-noise 33.7dB(A) Night Mode*
High-quality air that leaves you to sleep undisturbedSwitch to Night Mode to turn off display luminance for no-glare, no-noise purification. Your purifier will keep air circulating, providing you with the perfect environment for a night of sound sleep.
Easy-to-clean removable top grille.
Clean your purifier from the inside outTo protect the infants in your house, the top grille is screwed on and cannot be removed accidentally. Unscrew and remove the grille for easy access to the fan blades and air ducts. Clean the inside of your purifier to prevent secondary pollution.*Make sure the device is switched off before taking any of the following actions.
Step 1Unscrew and remove the grille
Step 2Using a soft cloth, clean the air ducts and the fan blades
Step 3Screw the grille back into place
An excellent user experience, it's in the details
Easy open and closeMagnetic-door design
DurableWeather-resistant ABS body
The difference between Xiaomi‘s High Efficiency Filter and conventional HEPA FilterCombining two filter technologies: Electrostatic charge and mechanical filtration, Xiaomi's High Efficiency Filter media can remove 99.97% of airborne particles of 0.3 micrometers in size and traps dust, PM 2.5, pollen, pet dander, smoke and tiny particles.
Compared to a conventional HEPA filter, Xiaomi's High Efficiency Filter allows the air purifier to generate less noise and consume less energy by allowing more airflow to pass through the filter all the while keeping the same cleaning efficiency.
Conventional HEPA filter
Less clean air
HEPA filter is made of dense fiberglass to trap particles, which means that less clean air get through the filter.
Noisy
Large volume air is forced to get through a dense HEPA filter, requires higher fan speed, which will generate higher noise.
Higher energy consumption
In order to get more clean air, HEPA filter requires the motor to run at a higher speed, which causes higher energy consumption.
Xiaomi's High Efficiency Filter
More clean air
Xiaomi's High Efficiency Filter integrated melt-blown PP fibers with electrostatics technology equipped with bigger fibers space, which enables a large volume clean air to get through the filter.
Low noise
Less dense fibers filter is easy to have the air passed even in a high speed, which results in much lower noise.
Lower energy consumption
Thanks to a less dense fibers filter,Xiaomi's High Efficiency Filter consumes less energy to achieve the same volume clean air.
*The filter media performance is tested by China Testing & Inspection Institute for Household Electric Appliances based on GB/T 6165-2021 standard. (Report Number: WCv-21-40115). Due to the technical specifications of the filter media, the test environment and parameters may differ.
* 500m³/h Particle CADR: Data from China Testing & Inspection Institute for Household Electric Appliances Inspection. Tested based on GB/T 18801-2015 standard. Report No. WCk-21-50469.* 8330L of purified air per minute: Refers to the clean air output when the product is operating at maximum output. Calculated based on the PM CADR of Xiaomi Smart Air Purifier 4 Pro.* Effective coverage area of 35-60m²: Data from China Testing & Inspection Institute for Household Electric Appliances Inspection Report (No. WCk-21-50469).* 15min purification for a living room of approx. 40m²: In a bedroom of 40m², with a ceiling height of 3m when the device is running at maximum output, a single-cycle purification time is calculated by: room area x room height ÷ PM CADR. On this basis, an 11min approx. single-cycle purification time is calculated for a bedroom of 30m².* High-efficiency filter for a larger surface area of 24000cm²: The surface area of filter paper used on the high-efficiency filter of Xiaomi Smart Air Purifier 4 Pro was 24000cm². Data from Smart Mi Lab, and may vary slightly due to differences between individual products.* High-quality activated carbon content of 650,000mg: The activated carbon content of the filter used on Xiaomi Smart Air Purifier 4 Pro is 650,000mg. Data from Smart Mi Lab, and may vary slightly due to differences between individual products.* 99.97% elimination of 0.3μm particles: Data from China Testing & Inspection Institute for Household Electric Appliances Inspection. Tested based on GB/T 6165-2021 standard. Report No. WCv-21-40115.* Low-noise 33.7dB(A) Night Mode: Refers to the noise value generated when the product is in Night Mode. Data from the China Testing & Inspection Institute for Household Electric Appliances Inspection Report (No. WCk-21-50469).* Alexa and Google Assistant voice control features require smart voice devices to function. Related connecting devices are sold separately.
* Google and its related logos are trademarks of Google LLC.
* Amazon, Alexa and all related logos are trademarks of Amazon.com, Inc. or its affiliates.
* Google Assistant and Amazon Alexa are not available in certain languages and countries. Availability of services varies by country and language.
Best for UK homes with allergies, pets, and medium rooms
Spring pollen, pet dander, and cooking odours can quickly build up indoors. The Xiaomi Smart Air Purifier 4 Pro is designed to help maintain cleaner air across everyday living spaces. For buyers searching for a Xiaomi Smart Air Purifier 4 Pro UK model, it offers strong airflow and smart monitoring to improve indoor air quality.
With a Particle CADR up to 500 m³/h and coverage of 35–60 m², the purifier can circulate up to 8330 litres of clean air per minute, helping reach corners of medium-sized UK living rooms or open-plan spaces.
This makes the Xiaomi Smart Air Purifier 4 Pro a practical Xiaomi air purifier for allergies UK households often look for, particularly during high pollen seasons.
The device also features PM2.5 and PM10 air quality monitoring, which automatically adjusts purification levels when pollution rises. Its Auto Mode reacts quickly to airborne particles, while Night Mode reduces operating noise, making it suitable as a quiet air purifier UK bedroom users can rely on.
Customer feedback on the Xiaomi UK Official Store reflects its real-world benefits. One reviewer noted: “Very happy with this purchase, my allergy is gone now.” For households with pets, the purifier can also help reduce airborne particles, making it a practical pet hair air purifier UK homes can benefit from.
UK buyers can take advantage of free delivery on orders over £59 and a 14-day free return policy, making the purchase more convenient and risk-free.
How to choose the right Xiaomi air purifier for you
When selecting a Xiaomi air purifier UK model, consider three main factors: room size, filtration features, and running costs. Room size and placement
Start by matching the purifier's coverage area to your space. The Xiaomi Smart Air Purifier 4 Pro covers 35–60 m², making it suitable for medium-sized living rooms or open-plan flats. Smaller rooms may benefit from a more compact purifier with lower airflow capacity. Filtration and smart monitoring
Air quality sensors can make a significant difference in everyday use. A PM2.5 and PM10 sensor air purifier with Auto Mode helps detect changes in real time and adjust purification levels automatically, keeping indoor air cleaner without manual adjustments. Noise and nighttime comfort
If you plan to run the purifier overnight, noise levels are important. The Night Mode operates at around 33.7 dB(A), making it suitable as a quiet air purifier UK bedroom users can keep running while sleeping. Filter lifespan and running costs
Maintenance should also be considered. Xiaomi Smart Air Purifier 4 Pro filter replacement typically lasts 6–12 months, depending on usage and air quality conditions. Delivery, returns, and savings
For UK buyers, practical perks like free delivery over £59, a 14-day return policy, and occasional student discounts can help improve overall value.
A common misconception when buying an air purifier is assuming that higher CADR automatically means better sleep quality. While airflow is important, comfort also depends on noise levels, room size, and proper placement.
Overall, the Xiaomi Smart Air Purifier 4 Pro remains a well-balanced option for households looking for effective allergen control, pet-friendly air purification, and smart monitoring in medium-sized rooms.
