PURMED Xiaomi Smart Air Purifier 4 Compatible True HEPA + Activated Carbon Replacement Filter
PURMED Xiaomi Smart Air Purifier 4 compatible replacement filter,
Specially designed for the Mi Air Purifier 4 model
It is a professional hybrid filter solution. In one body
combining the pre-filter + True HEPA + activated carbon layers;
solid particles such as dust, pollen, mold, bacteria, PM2.5 fine dusts ,
as well as chemical vapors such as smoke, cooking odor, VOC/TVOC
targets at the same time.
Thanks to the integrated RFID chip , the filter usage time is
It can be tracked via the Xiaomi Smart Air Purifier 4 app ;
So you can renew the filter at the right time and with confidence .
To see all PURMED air purifier filters on one page:
PURMED Filter Store – Xiaomi, Philips, Dyson, Levoit & Winix Compatible True HEPA Filters
Compatible Xiaomi Model
- Compatible device: Xiaomi Smart Air Purifier 4 (Mi Air Purifier 4)
- Not compatible: Other Xiaomi series such as Smart 4 Lite, 4 Compact, 4 Pro, Pro H, 3H, 2S, etc
Installing a filter on the wrong model; air leakage,
to reduce filtration performance and in the long term
may cause strain / damage to the device .
This product is designed exclusively for Xiaomi Smart Air Purifier 4
It is a PURMED branded replacement filter.
3-Layer Filter Structure
Xiaomi Smart 4 filter, which targets different pollutants step by step
It consists of three layers:
1) Pre-filter layer – large particulate barrier
- It is located in the outer layer and is the first to welcome air.
- Hair, pet hair, textile fibers, pollen clusters,
It captures large particles such as dust pellets, house dust mites .
- By preventing the inner HEPA and carbon layers from filling up unnecessarily quickly
It extends the total life of the filter.
- It helps to keep the air draft of the Xiaomi Smart 4 strong and balanced for a long time .
2) True HEPA layer – fine dust and allergen wall
- The True HEPA filter in the second layer is
It targets ultra-small particles that are invisible to the naked eye.
- Particles of 0.3 microns in size
It is designed to operate at least 99.97% efficiency.
- Pollen, mold spores, fungal spores, bacteria and some viral aerosols,
cigarette smoke particles and PM2.5 fine dust are trapped in this layer.
- For users with allergic rhinitis, asthma and dust/pollen sensitivity
It creates a strong barrier of protection.
3) Activated carbon layer – odor and chemical gas filter
- The activated carbon section in the innermost layer,
It focuses on gaseous pollutants and stubborn odors.
- Such as ammonia, benzene, formaldehyde
volatile organic compounds (VOC/TVOC), carbon monoxide, food and oil odors,
cigarette and stove smoke, cleaning chemical vapors and damp odor
trapped within carbon pores.
- The carbon structure with a large surface area protects the ambient air not only in terms of particles, but also
It also makes it fresh in terms of odor balance .
Color Options and Functions
PURMED Xiaomi Smart Air Purifier 4 filter has three different
It is offered in purple, green and gray color options according to needs.
In all versions, the pre-filter + True HEPA + activated carbon structure is the same;
The type of problem they focus on is different.
Grey filter – allergen / dust focused
- It is designed for homes and offices with a high allergen load.
- Such as dust, pollen, mold, mite residues and smoke particles
It focuses on reducing particles that stretch the airways.
- It is the ideal option for users with hay fever, pollen allergy, dust allergy or asthma complaints.
Purple filter – pet-focused
- It has been developed for homes with pets such as cats and dogs.
- Hair, feather dust, skin rash and animal-specific allergens
It helps reduce its density in the air.
- It contributes to keeping food, cat litter and animal odors under control.
- Purple filters are especially recommended for homes with more than one pet.
Green filter – chemical/VOC focused
- Optimized for environments with high chemical and VOC loads.
- Painted, new furniture used, frequent cleaning chemicals used
or homes and offices close to high-traffic/industrial areas.
- With its reinforced activated carbon structure, it is resistant to VOC/TVOC type gases and chemical vapors.
It helps to reduce it.
In Which Situations Does It Benefit?
- In individuals with allergies, asthma or dust/pollen sensitivity,
It helps to reduce the density of trigger particles in the air.
- Smoke and soot in smoking or stove/fireplace environments
It helps to keep both odor and particle load under control.
- Hair, dander and animal odors in homes with pets
It contributes to the balancing of the
- Food and oil odors in kitchen, living room and open-plan living areas
It promotes faster dispersion.
- In newly painted, renovated or newly furnished environments,
It helps to lower the chemical gas and VOC load.
Technical Specifications (Summary)
- Product Name: Xiaomi Smart Air Purifier 4 Compatible Replacement Filter – PURMED
- Filter Type: Hybrid (True HEPA + activated carbon + pre-filter)
- Filter structure: 3-layer filtration system
- Size (H x W): Approx. 29 x 20.9 cm
- Color options: Purple, green, grey
- Function focuses:
- Purple: Pet-focused
- Green: Chemical/VOC focused
- Grey: Allergen/dust focused
- Additional Feature: RFID chip integration (helps track filter life through the device)
- Compatible model: Mi Air Purifier 4
- Package Included: 1 Piece Replacement Filter
- Product Type: Disposable; not cleanable or washable.
- Recommended usage time: Average 8–12 months depending on ambient conditions
Lifespan and Filter Replacement
True HEPA and activated carbon filters prevent pollutants throughout the life cycle
accumulates in its pores. Over time, as these pores filled:
- Air passage becomes difficult,
- Filtration efficiency decreases,
- The device starts drawing more power to provide the same air flow rate.
The recommended filter replacement range for Xiaomi Smart Air Purifier 4 is
It is 8-12 monthsin typical home use. But:
- If outdoor air pollution is high,
- If smoking is done at home,
- If there is more than one pet,
- If the device operates for long hours a day
This time may be shortened and the filter may reach saturation sooner.
Typical signs that the filter needs to be replaced:
- Significant weakening of the air outlet even when the device is operating at high
- A persistent odor of unknown origin in the room
- Dust/lint build-up on surfaces faster than usual
- Visible dense layer of dirt and particles on the filter surface
During the replacement process, the device must be turned off and unplugged from the socket.
Using a mask and gloves when removing the used filter,
It is important to reduce the inhalation of particles attached to the filter.
Vacuuming HEPA paper with a broom or washing it with water,
It severely reduces filtration reliability by disrupting the fiber structure.
"Clean and reuse" a filter that has reached the end of its useful life;
It negatively affects both air quality and device health .
The saturated filter must be replaced with a new PURMED Xiaomi Smart 4 filter .
Compliance and Brand Note
This product is not the original OEM filter manufactured by Xiaomi.
To be compatible with Xiaomi Smart Air Purifier 4 air purifier
It is a high-quality replacement filter designed by the brand PURMED .
Xiaomi brand and model names mentioned in the product description are only
used to demonstrate compatibility ; Product sold
It is a registered PURMED filter branded product.
To get maximum efficiency from your Xiaomi Smart Air Purifier 4,
to maintain both the air you breathe and the long-lasting performance of the device
It is critical to use the right filter at the right period .
PURMED Xiaomi Smart 4 filter; three-layer hybrid structure,
reinforced activated carbon, high-efficiency True HEPA technology
and RFID chip support, to take the air quality in your home to the next level.
It is a professional solution designed.
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- PURMED Xiaomi Smart Air Purifier 4 PRO compatible filter (True HEPA + activated carbon + RFID)
- PURMED Winix Zero/P300 compliant HEPA+ carbon filter set
- PURMED Levoit Core Mini, Core 200, Core 300 / 300S compatible filters
- PURMED Dyson DP01 / DP03 / HP01 / HP02 compatible 3-layer filter
- PURMED Philips 800i, 1000, 2000i, 3000i, 3200, 8000 Series compatible HEPA + carbon filters
To see all models and current stocks:
View All PURMED Air Purifier Filter Models
