How loud is the Princess 352900 Smart Air Conditioner 9000?

65 dB(A) indoors, louder than a dishwasher.

What size room does the Princess 352900 Smart Air Conditioner 9000 cool?

It is rated to cool a room 20–25 m² (2.6 kW · 9,000 BTU).

Do I need a professional to install the Princess 352900 Smart Air Conditioner 9000?

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

Portable monoblocA

Princess

352900 Smart Air Conditioner 9000

Name: Princess 352900 Smart Air Conditioner 9000
Brand: Princess

Princess 352900 smart single-hose monobloc, 9,000 BTU/h (2.6 kW), R290, energy class A, with app scheduling and voice control for rooms up to 25 m2. A widely-stocked value smart portable.

£300

List price

About GBP 300 typical (RRP GBP 499.99); roughly EUR 396 at Amazon ES.

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: 20–25 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

Affordable smart portable with app and voice control
R290 refrigerant and energy class A
3-in-1 cooling, dehumidifying and fan with window kit

What to watch

Loud at 65 dB(A)
Modest 25 m2 coverage and tank-based dehumidification

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 Princess 352900 Smart Air Conditioner 9000

How loud is the Princess 352900 Smart Air Conditioner 9000?: 65 dB(A) indoors, louder than a dishwasher.
How energy-efficient is the Princess 352900 Smart Air Conditioner 9000?: Its efficiency rating is A.
What size room does the Princess 352900 Smart Air Conditioner 9000 cool?: It is rated to cool a room 20–25 m² (2.6 kW · 9,000 BTU).
Do I need a professional to install the Princess 352900 Smart Air Conditioner 9000?: 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.

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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