How loud is the AEG ChillFlex Pro AXP26U338CW?

51 dB(A) indoors, about as loud as a refrigerator.

What size room does the AEG ChillFlex Pro AXP26U338CW cool?

It is rated to cool a room 30–40 m² (2.6 kW · 9,000 BTU).

Do I need a professional to install the AEG ChillFlex Pro AXP26U338CW?

No. It is a portable monobloc you can fit yourself, no professional needed. No permission needed.

Portable monoblocA

AEG

ChillFlex Pro AXP26U338CW

Name: AEG ChillFlex Pro AXP26U338CW
Brand: AEG

A premium, well-built single-hose portable with self-evaporation so you rarely empty a tank. AEG rates it for larger rooms, though single-hose physics make smaller spaces a safer bet.

€499

List price

unit only, plug-in, window kit included

No live retailer link for this model right now.

This is a plug-in unit (no installer needed); we just have no live retailer for it right now. Compare it against models you can buy today.

Performance

Cooling capacity: 2.6 kW · 9,000 BTU
Heating capacity: Cooling only
Room coverage: 30–40 m²
SEER (cooling): Not published
SCOP (heating): Not published
Energy class (cooling): A
Energy class (heating): Not published
Annual energy (cooling): Not published

Noise, size & features

Indoor noise

What is good

Self-evaporating system, minimal need to empty water
Rated for larger rooms (manufacturer claims up to 40 m2)
Premium build and finish options
Eco R290 refrigerant

What to watch

Single-hose, so the 30-40 m2 claim is optimistic in real heat
Up to 64 dB(A) at full speed
No Wi-Fi on this variant

Installation & the rules that apply

This is a portable monobloc. The most regulation-light option by far. No F-gas certified installer is needed because you never break into the refrigerant circuit, no planning permission or permit is triggered since nothing is fixed to the building, and a landlord usually cannot refuse it as there are no permanent alterations. The main constraints are the tenancy or building rules on window-kit appearance and noise nuisance to neighbours.

Installation

Plug and play

Refrigerant

R290

GeneralRenters: get written landlord consent firstReviewed June 2026Often blocks install

Common questions about the AEG ChillFlex Pro AXP26U338CW

How loud is the AEG ChillFlex Pro AXP26U338CW?: 51 dB(A) indoors, about as loud as a refrigerator.
How energy-efficient is the AEG ChillFlex Pro AXP26U338CW?: Its efficiency rating is A.
What size room does the AEG ChillFlex Pro AXP26U338CW cool?: It is rated to cool a room 30–40 m² (2.6 kW · 9,000 BTU).
Do I need a professional to install the AEG ChillFlex Pro AXP26U338CW?: No. It is a portable monobloc you can fit yourself, no professional needed. No permission needed.

Is a portable even the right type?

Compare portables against the other types on price, noise, efficiency and install.

Window vs portable Mini-split vs portable

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Compact Italian-made single-hose monobloc with R290 refrigerant, EER 2.7 and energy class A. The Olimpia spec sheet and Geizhals both confirm 2.1 kW nominal cooling (8,000 BTU/h marketing label), not the A+ class previously recorded.

Cooling

2.1 kW