--- product_id: 644421767 title: "Mi Air Purifier 4 Compact, True HEPA H13 3-Stage Filter System Removes 99.97% of Pollutants as small as 0.3 microns, Smart Home Integration, Whisper Quiet, Just 0.9KW/day, OLED Touch Display" brand: "xiaomi" price: "HK$2831" currency: HKD in_stock: true reviews_count: 13 category: "Xiaomi" url: https://www.desertcart.hk/products/644421767-mi-air-purifier-4-compact-true-hepa-h13-3-stage store_origin: HK region: Hong Kong --- # Smart app & voice control Ultra-quiet 20 dB noise 99.97% pollutant removal Mi Air Purifier 4 Compact, True HEPA H13 3-Stage Filter System Removes 99.97% of Pollutants as small as 0.3 microns, Smart Home Integration, Whisper Quiet, Just 0.9KW/day, OLED Touch Display **Brand:** xiaomi **Price:** HK$2831 **Availability:** ✅ In Stock ## Summary > 🌬️ Breathe Smart, Live Better — The Future of Clean Air is Here! ## Quick Answers - **What is this?** Mi Air Purifier 4 Compact, True HEPA H13 3-Stage Filter System Removes 99.97% of Pollutants as small as 0.3 microns, Smart Home Integration, Whisper Quiet, Just 0.9KW/day, OLED Touch Display by xiaomi - **How much does it cost?** HK$2831 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/644421767-mi-air-purifier-4-compact-true-hepa-h13-3-stage) ## Best For - xiaomi enthusiasts ## Why This Product - Trusted xiaomi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Purify Like a Pro:** True HEPA H13 filter traps 99.97% of particles down to 0.3 microns for pristine air quality. - • **Long-Lasting Filters:** Enjoy hassle-free maintenance with filters lasting up to 12 months, tracked conveniently through the app. - • **Whisper-Quiet Comfort:** Operates at a barely-there 20 dB, 33% quieter than typical purifiers—perfect for work or sleep. - • **Energy-Savvy & Compact:** Consumes only 0.9 kW/day with a sleek, space-saving design that fits effortlessly into your modern home. - • **Smart Living, Simplified:** Seamlessly control your air purifier via app or voice assistant—clean air is just a command away. ## Overview The Xiaomi Mi Air Purifier 4 Compact features a True HEPA H13 3-stage filtration system that removes 99.97% of pollutants as small as 0.3 microns. Designed for spaces up to 50 m², it operates whisper-quietly at 20 dB and consumes just 0.9 kW/day. With smart home integration, OLED touch display, and app/voice control, it offers effortless air quality management. Its long-lasting filters (6-12 months) and compact design make it an ideal choice for health-conscious professionals seeking clean, fresh air in their living or workspaces. ## Description Shop Xiaomi Mi Air Purifier 4 Compact, True HEPA H13 3-Stage Filter System Removes 99.97% of Pollutants as small as 0.3 microns, Smart Home Integration, Whisper Quiet, Just 0.9KW/day, OLED Touch Display. Free delivery on eligible orders of £20 or more. Review: Larger than expected not suitable on top of desks perfect for floor - works very well, cheap to buy filters and filter themselves last very long ~1 year probably more if for smaller rooms Review: Highly recommend - Excellent, really happy with it. Very easy to use, great features and easy to set up the WiFi app. Replacement filters are also competitively priced. ## Features - High efficiency: this air purifier effectively filters animal hair, dust, smoke, etc. With built-in electrostatic and activated carbon filters, it can remove at least 99.97%. - Powerful performance: You can feel a noticeable difference in air quality when the air purifier is on. This air purifier can clean a small room in just 12 minutes and 50 m2 in 30 minutes. - Low noise level of 20 dB: the noise level is 33% lower than normal air purifiers. Ideal for closed rooms, such as living rooms or bedrooms. Create a pleasant and healthy environment for you and your family. - Intelligent app control: via the app, you can control the settings of the air purifier, set timers, check the life of the filter, connect to voice assistants and so on. It is very easy to use and you can enjoy clean air at any time at the same time. - Hassle-free replacement: It can last 6-12 months, 2 times longer than others. You can use the app to find out how long the filter works. If you need to replace the filter element, just turn it from below. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D1YBCWGZ | | Best Sellers Rank | 189,528 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 211 in Air Purifiers | | Brand | XIAOMI | | Brand Name | XIAOMI | | Colour | Ivory | | Contaminant Filtration Capability | True | | Control Method | Voice | | Control method | Voice | | Controller Type | Touch Control | | Customer Reviews | 4.4 out of 5 stars 4,619 Reviews | | Filter Class | HEPA | | Filter Type | HEPA | | Floor Area | 517 Square Feet | | Included Components | Air Purifiers | | Item Dimensions D x W x H | 25D x 25W x 25H millimetres | | Item Type Name | Xiaomi Air Purifiers K | | Item Weight | 2.99 Kilograms | | Item weight | 2.99 Kilograms | | Model Number | Xiaomi | | Noise Level | 20 Decibels | | Number of Packs | 1 | | Part Number | Xiaomi | | Particle Retention Size | 0.3 Micron | | Power Source | electric | | Power source | electric | | Product dimensions | 25D x 25W x 25H millimetres | | Special Features | Compact, Smart Home Integration | | Specification Met | Certified HEPA | | Unit Count | 1.0 count | | Wattage | 27 watts | ## Product Details - **Brand:** XIAOMI - **Colour:** Ivory - **Item weight:** 2.99 Kilograms - **Power source:** electric - **Product dimensions:** 25D x 25W x 25H millimetres ## Images ![Mi Air Purifier 4 Compact, True HEPA H13 3-Stage Filter System Removes 99.97% of Pollutants as small as 0.3 microns, Smart Home Integration, Whisper Quiet, Just 0.9KW/day, OLED Touch Display - Image 1](https://m.media-amazon.com/images/I/71jQqynFuVL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: What room size is this purifier suitable for? Is it effective against kitchen fumes and pet odors?** A: Suitable for 16-27㎡ bedrooms/studies. CADR 230m³/h with 3-in-1 filter, removing 99.97% of 0.3μm particles. Effective against kitchen fumes and pet odors. **Q: Why does the purifying effect seem weak after a few days?** A: Check 1. Is filter packaging removed? 2. Is room size matched to unit capacity and fan speed? 3. Is room sealed properly? Run 48h continuously. Contact support if no improvement. **Q: How loud is sleep mode? Will it disturb sleep in the bedroom?** A: Sleep mode: 20dB (whisper-quiet). Turbo: 52dB. Runs quietly with no light to disturb sleep at night. If buzzing persists, check 1. Hard surface placement? 2. Filter installed properly? **Q: Why does the air quality light stay green? Is the sensor broken?** A: Light shows PM2.5 only, not odors/VOC. Green = PM2.5<35μg/m³ (normal). After long use, sensor may be dirty, aged, loose, or damaged, affecting accuracy. Follow manual for maintenance; contact support if damaged. **Q: Is a burnt smell or abnormal noise a quality issue?** A: New units may have brief harmless odor (residue from composite filter materials), fading over time, not harmful to health. Run on max speed in ventilated area to dissipate. Stop use immediately for persistent smell/noise. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Larger than expected not suitable on top of desks perfect for floor *by H***N on 25 April 2026* works very well, cheap to buy filters and filter themselves last very long ~1 year probably more if for smaller rooms ### ⭐⭐⭐⭐⭐ Highly recommend *by T***Y on 2 July 2026* Excellent, really happy with it. Very easy to use, great features and easy to set up the WiFi app. Replacement filters are also competitively priced. ### ⭐⭐⭐ Works well with Home Assistant *by D***N on 8 June 2026* Its great once you grab the API key and add to Home Assistant and block its outbound access so it doesn't require a constant connection to MANY China IPs. ## Frequently Bought Together - Xiaomi Mi Air Purifier 4 Compact, True HEPA H13 3-Stage Filter System Removes 99.97% of Pollutants as small as 0.3 microns, Smart Home Integration, Whisper Quiet, Just 0.9KW/day, OLED Touch Display - Xiaomi Electric Precision Screwdriver, All-metal Gearbox, Powerful Magnetic Motor, Rechargeable Lithium Battery, S2 Steel Screwdriving Bits, Type-C Charging, Aluminium Alloy Case (Power Screwdriver) - Xiaomi Mi Computer Monitor Light Bar - Easy Installation, Extra Computer Lighting w/o Taking Desktop Space, with Wireless Remote Control Adjusting Lights Easily --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hk/products/644421767-mi-air-purifier-4-compact-true-hepa-h13-3-stage](https://www.desertcart.hk/products/644421767-mi-air-purifier-4-compact-true-hepa-h13-3-stage) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-10-13*