What air purifier Xiaomi Mi Air Purifier is better to buy: comparison of models and tips for choosing

Xiaomi Mi Air Purifier air purifiers have long been the standard of quality in the smart home appliances segment. Every year the range expands, with new models with new filters, improved sensors and advanced control functions. But how not to get lost in this variety and choose the perfect option for your needs? This article will help you understand the key differences between popular models, assess their strengths and weaknesses, and avoid typical mistakes when buying.

We analyzed specifications, user reviews and independent test results to create an objective ranking, focused on such parameters as coverage area, filter type, noise level and integration with the Xiaomi ecosystem, and you will learn which models are better at dealing with dust, allergens or smells, and which are suitable for large rooms or children's rooms.

It's important to understand that even the most expensive Xiaomi cleaners require regular filter replacements, which is a major expense in the long run. So in this article, we'll look at the cost of consumables and how often they are replaced for each model. If you're looking for a device "for years," this will be a crucial consideration when choosing.

Key criteria for choosing an air purifier Xiaomi

Before comparing specific models, determine the basic requirements for the device. Here are the parameters that should be considered first:

• 📏 Size of the room: models are designed for different squares (from 20 to 100 m2). For the bedroom, a compact version will suffice, and for the living room you need a powerful cleaner.
• 🔄 Type of filtration: HEPA-filter (H11-H13) They can trap up to 99.97% of particles, charcoal can absorb odors, and antibacterial coatings can kill microbes.
• 🔊 Noise level: at night it is important that the device is quieter than 30 dB. In Turbo mode, noise can reach 60 dB.
• 📱 Smart features: support for Mi Home/Google Home, voice control, automatic mode according to sensor data PM2.5.
• 💰 Cost of consumption: original filters are used 6-12 months, but their price may be 30-50% cost of the device.

Look at the CADR, which is the clean-up efficiency score. The higher it is, the faster it can handle pollution. For those with allergies, the HEPA filtering level is critical: H13 is better than H11, but it costs more. Also check if the model has an air quality sensor, without which the automatic mode will not work.

Comparison of top Xiaomi Mi Air Purifier models in 2026

The table below shows the key characteristics of the most popular models to date, and we have included both budget options for small rooms and flagship devices for large rooms.

As you can see from the table, the Mi Air Purifier 4 Pro and Smartmi P1 are both the top performers, but they are also significantly more expensive. For smaller rooms (up to 30 m2), the Mi Air Purifier 4 Lite is the best choice, which is cheaper to maintain and takes up little space. If you want to integrate with a smart home, look at models that support HomeKit or Google Assistant.

💡

For allergy sufferers and asthmatics, the HEPA H13 filter is critical, it traps even the smallest particles of dust and pollen, and H11 models are only suitable for general air purification from dust and wool.

The best cleaner for allergies and asthmatics

If your primary goal is to control allergens (pollen, mites, animal hair), choose models with a HEPA H13 filter and additional layers of protection.

• 🌿 Mi Air Purifier 4 Pro - filter H13 + antibacterial, CADR 500 m3/h Suitable for rooms up to 60 m².
• 🧪 Smartmi Air Purifier P1 — 7-step cleaning system, including formaldehyde filter, ideal for new repairs (removes paint smell).
• 🛡️ Mi Air Purifier 4 - budget version with the H13, less productive (CADR 380 m3/h).

For maximum efficiency, it is important that the device is automatically operated with the PM2.5 sensor, which will allow the cleaner to respond to the slightest changes in air quality, and check whether the model has a night mode with reduced noise (up to 30 dB), which is critical for bedrooms.

⚠️ Note: If your area has high pollution levels (e.g. near a road or industrial area), choose a model with a high pollution level. CADR at least 400 m3/h Weak cleaners will not cope with the constant influx of polluted air.

For children's rooms, we recommend the Smartmi P1 - it not only cleans the air, but also controls the level of formaldehyde, which is important if there are new furniture or finishing materials. Alternatively, Mi Air Purifier 4 with night mode enabled and placement at a distance of 1-2 meters from the crib.

What cleaner to choose for a large room (50+ m2)?

For living rooms, offices or studios with an area of 50 m2, only powerful models with CADRs from 500 m3 / h are suitable.

1. Smartmi Air Purifier P1 (CADR 600 m3/h) is the leader in performance, but also the most expensive to maintain.
2. Mi Air Purifier 4 Pro (CADR 500 m3/h) - optimal balance of price and power. Suitable for rooms up to 60 m2.

An important nuance: in large rooms, the cleaner must operate at maximum speed, which increases noise and energy consumption, the solution is to place the device in the center of the room or use two medium-power cleaners (for example, two Mi Air Purifier 4 at different corners of the room).

💡

For an open plan (kitchen-living room), choose a model with the function Auto Mode + - it automatically increases the power when cooking or opening windows.

If the budget is limited, consider the Mi Air Purifier 3H - its CADR 380 m3 / h will last for 35-40 m2, but for 50 + m2 you will have to sacrifice the cleaning speed. In this case, it is better to buy a second cleaner or choose a model from another brand (for example, Philips AC3858 with a CADR 520 m3 / h).

How much do you charge and how often do you change them?

One of the main hidden costs of buying a cleaner is replacing filters. The table below shows the average prices and lifetimes for popular Xiaomi models.

The filter life depends on the degree of air pollution and the intensity of use. In megacities or near roads, filters will have to be changed more often (every 6 months). The Mi Home app has a filter resource meter - focus on it, not on average data.

⚠️ Note: Use of non-original filters can lead to loss of warranty and deterioration of cleaning quality. HEPA. If you have a budget, it’s better to choose a model with cheap consumables (for example, Mi Air Purifier 4 Lite) than to save on filters for an expensive device.

Tip: buy filters for stock during sales (for example, on AliExpress or in the official Xiaomi store). Some users clean carbon filters with a vacuum cleaner, but this is a temporary measure - the efficiency after such a "cleaning" drops by 30-50%.

Integration with a smart home: what do you need to know?

All modern Xiaomi cleaners support management through the Mi Home app, but the integration options are different:

• 📱 Basic models (4 Lite, 3H): Control over Wi-Fi, voice commands (only via Alice or Google Assistant), automatic mode on schedule.
• 🏠 Advanced models (4 Pro, Smartmi) P1): Apple HomeKit support, automation scenarios (e.g., turning on when windows are opened), temperature/humidity sensor.

To make smart features work, the cleaner must be connected to the same Wi-Fi network as your smartphone or Xiaomi Gateway hub. If you have multiple cleaners, they can be combined into one group in an application and managed simultaneously.

Voice control works through Yandex Alice, Google Assistant or Siri (for models with HomeKit).

• "Alice, turn on the air purifier to maximum."
• "OK Google, set the cleaning speed to Level 2."
• "Hey Siri, turn off the purifier in the living room."

Frequent errors in selection and use

Even experienced users sometimes make mistakes that reduce the efficiency of the cleaner or lead to additional costs.

Make sure that the CADR corresponds to the area of the room (formula: area × 2 = minimum CADR)

Check compatibility with your smart home ecosystem (HomeKit, Google Home, etc.)

Estimate the cost and availability of filters for the model

Check the noise level at night (should be) ≤30dB for the bedroom)-->

Error 1: Buying a power-saving cleaner, such as a Smartmi P1 for a room of 20 m2, which leads to excessive noise and overuse of electricity, optimally when the CADR is 2-3 times the area of the room (for example, CADR 380 for 30 m2).

Mistake 2: Place the cleaner in the corner or behind the furniture, and work efficiently requires free air from all sides, and optimally positioned 30-50 cm from the walls and furniture.

Mistake 3: Ignoring filter replacement. A clogged filter not only loses its effectiveness, it becomes a breeding ground for bacteria. There's a reminder on the Mi Home app to replace it -- don't put it off.

⚠️ Warning: Some users try to reset the filter life meter in the application after it is cleaned by a vacuum cleaner, which is dangerous: a polluted filter may look clean on the outside, but its pores can no longer cope with microcontamination. It is better to replace the filter on time or buy a model with a washable prefilter (for example, Smartmi). P1).

FAQ: Answers to popular questions