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Air Conditioners Without External Unit

The whole family of solutions that cool without a motor hanging outside: fixed on the wall or portable, from 5000 to 14000 BTU. The right choice where the outdoor unit is banned or impossible to install.
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Air conditioners without an outdoor unit: the overview

Air conditioners without an outdoor unit are a family of appliances designed to cool a room without having to mount any motor on the façade. The entire refrigerant circuit stays enclosed in a single body, inside the room. This is the category to look at when the building regulations, a heritage constraint or the shape of the building make the classic installation with two separate units impossible.

When to choose them

This family was created to solve concrete cases: flats where the residents' association bans motors on the façade, historic centres under landscape protection, studios and rented homes where you don't want permanent works, or walls that simply have no room to host an outdoor unit. In all these situations a traditional split system is not feasible, while a solution without an outdoor motor still lets you have cooling at home.

The available types

Within the family two main approaches coexist:

  • Fixed wall-mounted monobloc: it is installed permanently high on the perimeter wall and discharges air through two holes. It is the tidiest and most efficient choice. You'll find all the models among the fixed air conditioners without an outdoor unit.
  • Portable: on wheels, it moves from one room to another and expels warm air through a flexible hose to the window. No permanent hole. Discover them among the portable air conditioners.

Advantages

The main strength is the complete absence of an outdoor motor: no work on the façade, no condominium authorisation for the outdoor unit, no aesthetic impact on the building. Installation is faster because no welding of the gas pipes between inside and outside is needed, and the appliance is ready in a few hours. Many heat pump models cool in summer and heat in winter.

Limits to be aware of

It is only fair to know the trade-offs too. At equal BTU the performance is a little lower than a split with a separate motor, because all the heat exchange happens at the wall. The compressor is housed inside the appliance, so the noise is felt in the room more than with a split system. For these reasons this family is at its best on single rooms of medium to small floor area, not on large surfaces. For the rest of the house you can always consider the classic wall air conditioners.

Outputs and brands

The range covers sizes from 5000 to 14000 BTU, so you can choose the right power based on the square metres of the room. The benchmark manufacturers are Innova and Olimpia Splendid, joined by Diloc, Ariston and Argo. Prices start from about 248 euros for the most compact portable models and reach the most complete fixed solutions around 2745 euros.

Where to start

Frequently asked questions

What is the difference between a fixed and a portable air conditioner without an outdoor unit?
The fixed monobloc is installed permanently on the wall with two holes and always stays in place, with better performance. The portable one is on wheels, moves between rooms and discharges air through a hose to the window, with no permanent holes.
Why choose an air conditioner without an outdoor unit?
It is the right solution when you can't install the motor on the façade: condominiums that ban outdoor units, protected buildings, rented homes or walls with no room. You cool the room without works on the outside.
Do they cool as much as a traditional split system?
At equal BTU the performance is slightly lower, because all the heat exchange happens at the wall instead of on a separate motor. On rooms of medium to small floor area the difference is limited and the benefit of having no outdoor unit remains significant.
Are they noisier than an air conditioner with an outdoor unit?
The compressor is housed inside the appliance in the room, so the noise is felt more than with a split system that keeps the motor outside. It is a natural trade-off for anyone who can't mount the outdoor unit.
Do these air conditioners also heat in winter?
Many heat pump models cool in summer and heat in winter. Check the product sheet for the presence of the heat pump function if you also need heating.
Which outputs and brands are in this family?
The sizes range from 5000 to 14000 BTU, with the brands Innova and Olimpia Splendid in the foreground, joined by Diloc, Ariston and Argo. Prices start from about 248 euros for the most compact portable units.
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