Wall Mounted Air Conditioner Units – Inverter H/pump. Available on long term maintained contracts.

Portable Air Conditioning System Split Design – Better energy efficiency however no fresh air!
In split devices the condenser (external unit) and evaporator (internal unit) are separated.

The external unit is positioned outside, normally on a balcony or terrace or other area which is outside. They are connected to the inside evaporator by a connection line containing the refrigerant.

Compared to monobloc design devices, Portable Air Conditioning Split systems are characterised by having a higher energy efficiency as the waste heat is produced outside in the external unit, rather than indoors – this also eliminates the need for a hose. Another consequence of running a Split portable system is that there is no vacuum created – which means there is no warm outside air trailing back into the room – however this does limit the amount of fresh air the room will receive (e.g. poorer oxygen balance).

Another difference to note is the noise emission. Split Air Conditioners are generally more silent that other monobloc devices. This is because part of the ventilation system is outside in the external unit, whereas in the case of a monobloc design, all fans are based in the same, internal, device. It is also valuable to note that both Split and Monobloc designs have compressors inside the indoor unit which also emit noise.