How loud is the Daikin 4MXM80A (4-room multi-split outdoor unit)?

19 dB(A) indoors, quieter than a whisper.

How energy-efficient is the Daikin 4MXM80A (4-room multi-split outdoor unit)?

Its efficiency rating is SEER 7.33.

Do I need a professional to install the Daikin 4MXM80A (4-room multi-split outdoor unit)?

Yes. As a multi-split it needs a certified installer. Usually needs permission.

Does the Daikin 4MXM80A (4-room multi-split outdoor unit) heat as well as cool?

Yes. It also heats, rated 9 kW.

Multi-splitA++ Heats too

Daikin · Model 4MXM80A9

4MXM80A (4-room multi-split outdoor unit)

Name: Daikin 4MXM80A (4-room multi-split outdoor unit)
Brand: Daikin

A single Daikin outdoor unit that runs up to four indoor units, so one wall-mounted condenser can cool and heat a whole flat or small house. You pick the indoor unit style per room.

€2,600

List price

outdoor unit only; indoor units and install extra (full 4-room system typically 5000-7000 EUR installed)

No live retailer link for this model right now.

Performance

Cooling capacity: 8 kW · 27,300 BTU
Heating capacity: 9 kW
Total coverage: 60–100 m²
SEER (cooling): 7.33
SCOP (heating): 4.61
Energy class (cooling): A++
Energy class (heating): A+
Annual energy (cooling): 382 kWh

Noise, size & features

Model number: 4MXM80A9
Indoor noise

What is good

One outdoor unit can serve up to 4 separate rooms, saving wall space and facade clutter
Reverse-cycle: efficient heating in winter as well as cooling in summer
Daikin indoor mix-and-match: wall, floor, ducted or cassette units on the same system
Quiet R32 inverter platform with whisper-mode indoor units down to 19 dB(A)

What to watch

Outdoor unit is large and heavy (around 60-65 kg), needs a solid mounting position
If the outdoor unit fails, all connected rooms lose cooling at once
Full multi-room system cost is high once indoor units and labour are added

Installation & the rules that apply

This is a multi-split. Same F-gas certified-installer requirement and sub-750 GWP refrigerant rule as a single split, applied across a bigger system. Because it touches multiple rooms and routes pipes through the structure, it more often triggers planning or prior-declaration steps, freeholder, landlord or condominium and shared-wall consent, and neighbour distance and noise rules. Heritage and historic-centre restrictions apply to the outdoor unit just as for a single split, but the single shared condenser is often easier to get approved than several separate units.

Installation

Certified installer

Refrigerant

R32

BelgiumCopropriete authorisation for shared partsReviewed June 2026Often blocks install

Common questions about the Daikin 4MXM80A (4-room multi-split outdoor unit)

How loud is the Daikin 4MXM80A (4-room multi-split outdoor unit)?: 19 dB(A) indoors, quieter than a whisper.
How energy-efficient is the Daikin 4MXM80A (4-room multi-split outdoor unit)?: Its efficiency rating is SEER 7.33.
Do I need a professional to install the Daikin 4MXM80A (4-room multi-split outdoor unit)?: Yes. As a multi-split it needs a certified installer. Usually needs permission.
Does the Daikin 4MXM80A (4-room multi-split outdoor unit) heat as well as cool?: Yes. It also heats, rated 9 kW.

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2AMW42U4RGC Multi Split (dual)

The Hisense 2AMW42U4RGC is a compact 4.1 kW R32 dual-split outdoor unit that drives two indoor heads from one small, lightweight condenser. It is a budget-friendly way to cool and heat two rooms, such as a living room and bedroom, without a second outdoor box.

Cooling

4.1 kW