Midea M4OE-28HFN8-Q 24000BTU multi-split air conditioner outdoor unit

Midea M2OE-18HFN8-Q 18000 BTU is a compact, energy-efficient multi-split outdoor unit that lets you connect multiple indoor units to one external module and enjoy comfort in different rooms without a “forest” of outdoor units on the facade. The fully inverter FULL DC inverter platform complies with ERP standards, meaning efficient temperature maintenance and modern load-control logic.

Why it’s convenient and cost-effective

1) Multi-split = space saving and a cleaner facade

One outdoor unit serves multiple rooms. This is especially valuable when outdoor space is limited (balcony, niche, narrow facade) or when building aesthetics matter.

2) Flexible indoor unit configuration

You can build the system for a specific site using different indoor unit types and capacities: wall-mounted, cassette, ducted (depending on the project). This gives planning freedom: a visible stylish wall unit in one area, and an “invisible” ducted solution above the ceiling in another.

3) FULL DC inverter (fully inverter system)

In these systems, inverter control covers the key components:

• inverter compressor,

• inverter outdoor fan,

(and, within the system, inverter components of the indoor units).
Practical benefit: fewer hard start/stop cycles, more stable temperature, lower noise, and reduced power consumption in steady-state operation.

4) R32 refrigerant — eco-friendly and efficient

The system uses R32, a next-generation refrigerant with zero ozone depletion and a lower global warming potential (as stated by the manufacturer). It delivers efficient cooling and strong performance.

5) “Smart” coordinated component control

Control relies on an algorithm that coordinates the compressor, fan motor, and electronic expansion valves. This is important for multi-split: the system distributes capacity more precisely between rooms and operates more steadily under changing loads.

6) Self-diagnosis

Self-diagnosis helps identify the cause of a fault faster and speeds up service — less downtime and simpler maintenance.

7) Outdoor unit protection and durability

• Golden Fin — an anti-corrosion coating on the casing/heat exchanger to protect against moisture and aggressive environments.

• Water-repellent aluminum fins — reduce moisture and dirt retention, helping maintain heat-exchange efficiency.

• Protective cover for connection ports — lowers the risk of damage and improves installation neatness.

8) Low-temperature operation down to -15°C

Stable operation in cold weather (within stated limits) extends seasonal usability.

Important note about multi-split operating modes

Indoor units can operate simultaneously only in one mode: either cooling or heating. At the same time, each room can have individual settings from its own remote (temperature/fan speed/air direction within the selected mode).