Wall mounted air conditioning units are one of the most common forms of domestic air conditioning and, unlike window mounted units, do not restrict the view from a window or the amount of daylight admitted. Furthermore, wall mounted air conditioning units are typically aesthetically appealing and easy to install, clean and maintain. Mounting through a wall is more secure than mounting through a window and there is no need to remove and store a wall mounted air conditioning unit during the winter.
How Wall Mounted Air Conditioning Works
A typical wall mounted air conditioning system is made up of a number of wall mounted units – one in each room to be cooled – fixed to the wall with metal mounting plates – and a single small “compressor” and “condenser” unit located outside the building. Warm air from a room passes over a cooling or “evaporator” coil which absorbs heat energy and moisture, and cool dehumidified air is circulated back into the room. Heat energy is carried away – via a “refrigerant” chemical flowing through a copper pipe – to the external unit where it is dissipated to the outside air. The refrigerant is cooled and compressed before flowing back to the evaporator coil and the cycle is repeated.
Some wall mounted air conditioning systems feature what is known as “inverter” technology; indeed, the units themselves may be referred to as wall or high wall “inverters”. Inverter technology allows the cooling capacity of a wall mounted air conditioning unit to be matched very precisely to the requirements of a room and allows the system, as a whole, to operate very efficiently.
Pros & Cons of Wall Mounted Air Conditioning
Wall mounted air conditioning typically offers a quieter more powerful – and often more aesthetically attractive – alternative to a window mounted or portable “monobloc” system. Wall mounted units with cooling capacities between 2.5kW and 6.5kW are generally available and suitable for installation in living rooms, bedrooms – noise levels are restricted to 25dB(A), or so – or any other large area where quiet unobtrusive cooling is required. The cooling capacity and fan speed of a unit, or units, can be digitally controlled via a timer or remote control.
Wall mounted air conditioning is, however, more expensive than the window or portable alternatives and is likely to require professional installation. The internal and external units are permanent fixtures which are not altogether easy to disguise, and wall units need to be properly sealed so that they are not a source of unwanted draughts during the cooler months. The connection of copper pipe between the units requires drilling – existing pipe work, electrical wiring and the composition of external walls may present problems in this respect – so the cost of installation itself may not be insignificant. Some larger systems may also require a dedicated 240-volt AC supply.