
The Mijia Air Conditioner Pro Eco 3.5 kW (ASH-12WO/N1C3-EU) is Xiaomi’s wall-mounted split AC for mid-range buyers. It comes in white, with a 9.8 kg indoor unit and a 25.5 kg outdoor unit. It cools and heats, and it is rated at 3.5 kW (12,000 Btu/h). It arrived in Europe next to a 2.6 kW version, and these are the first Mijia air conditioners sold in the region. Xiaomi suggests it for rooms of 15 to 25 m².
It delivers 3.5 kW of cooling on 875 W and 3.6 kW of heating on 860 W. The compressor is a full DC inverter, and the airflow is 650 m³/h. The refrigerant is R32, the maximum current is 7.1 A, and the outdoor unit has an IPX4 rating. SEER is 8.5, and SCOP is 5.7 in warm climates or 4.6 in average ones. Cooling gets A+++, and heating gets A+++ or A++ depending on climate. Cooling works from 18 °C to 43 °C, and heating works from -20 °C to 24 °C. Sound power is 55 dB(A) indoors and 61 dB(A) outdoors. Xiaomi claims the AI energy-saving mode adds up to 27% efficiency on this model. Control runs through the Xiaomi Home app over 2.4 GHz Wi-Fi. No power cord or plug comes with the indoor unit.
The European price is €699, and the 2.6 kW costs €599. Poland lists it at 2,999 zł, or 4,699 zł installed. It suits someone who wants an app-controlled inverter AC for a living room or a big bedroom and already has Xiaomi Home devices. In Xiaomi’s range it is the bigger sibling of the Pro Eco 2.6 kW, and it overlaps with the Mijia Air Conditioner Eco line sold in China. Rivals at this size include the Midea Xtreme Save and the Gree Pular in 3.5 kW versions. The best direct comparison is the Pro Eco 2.6 kW, because only capacity and price change. For another brand, compare it with the Gree Pular 3.5 kW.
| Model name | Mijia Air Conditioner Pro Eco 3.5 kW |
| Model number A model number is a unique alphanumeric code assigned by a manufacturer to identify a specific version, design, or series of a product | ASH-12WO/N1C3-EU |
| Series | Mijia Pro Eco |
| Product Type | Split-type wall-mounted inverter AC (cooling and heating) |
| Release date A release date is the specific day when a product, service, or official piece of information becomes available to the public | Not specified |
| Availability by region Availability by region means whether a specific product is in stock, can be purchased, or is legally allowed to be sold in a particular geographic area (such as a country, state, city, or postal code). | EU markets (Xiaomi Global, Spain, Poland listings) |
| Color options | Not specified |
| Launch price | €699 (installation about €300 extra, per Xataka) |
| Warranty A warranty is a legally binding promise from a manufacturer or seller to repair, replace, or refund a product if it breaks or fails to meet specific quality standards within a set time | Not specified |
| Capacity | ≈12,000 Btu/h (cooling) |
| Cooling Capacity | 3.5 kW |
| Cooling Capacity Range | Not specified |
| Heating Capacity | 3.6 kW |
| Heating Capacity Range | Not specified |
| Auxiliary Heater Power | Not specified |
| Recommended Room Size | 15–25 ㎡ |
| Operating Temperature Range (Cooling) | Not specified |
| Operating Temperature Range (Heating) | Not specified |
| Airflow Volume | 650 m³/h |
| Swing Type | Up-down and left-right |
| Energy Efficiency Rating | Cooling A+++; heating A+++ (warm climate) / A++ (average climate) |
| Energy Rating Standard | EU energy label |
| Efficiency Index (Cooling) | SEER 8.5 |
| Efficiency Index (Heating) | SCOP 5.7 (warm) / 4.6 (average) |
| Rated Power Input (Cooling) | 875 W |
| Rated Power Input (Heating) | 860 W |
| Rated Voltage | 220–240 V, 1 phase |
| Rated Frequency | 50 Hz |
| Maximum Current | Not specified |
| Noise Level (Indoor Unit) | 55 dB(A) sound power |
| Noise Level (Outdoor Unit) | 61 dB(A) sound power |
| Inverter Type | Inverter |
| Compressor type | Not specified |
| Compressor Brand | Not specified |
| Compressor Displacement | Not specified |
| Refrigerant Type | R32 |
| Refrigerant Charge | Not specified |
| Throttling Method | Not specified |
| Maximum Pipe Length | Not specified |
| Maximum Height Difference | Not specified |
| Filter Type | Not specified |
| Self-Cleaning | |
| Sterilization rate | Not specified |
| Fresh Air Function | |
| Dehumidification Function |
| App Control | |
| Wi-Fi Wi-Fi is a wireless networking technology that uses radio waves to connect devices to the internet without physical cables. | |
| Voice assistant A voice assistant is a software program powered by artificial intelligence that understands and responds to spoken commands. | |
| Smart Home Platform | |
| OTA updates |
| Dimensions (Indoor Unit) | Not specified |
| Dimensions (Outdoor Unit) | Not specified |
| Weight (Indoor Unit) | Not specified |
| Weight (Outdoor Unit) | Not specified |
| Gross Weight (Indoor Unit) | Not specified |
| Gross Weight (Outdoor Unit) | Not specified |
| Connecting Pipes Included |