Tips for Wall-Mounted Air Conditioning Installation

There are several important factors to be taken into account when considering a domestic air conditioning installation.  The exact location of your wall mounted air conditioning unit will need to be carefully planned, ensuring that it is installed at the correct height, in an unobstructed position and in a well ventilated space.  An ill-considered installation can result in premature wear and tear, and will often lead to higher running costs, increased maintenance and the unnecessary expense of mechanical failure.

In this article, we expand further on the points raised above and give you some useful guidelines on how to choose the best place to install your AC unit when considering domestic air conditioning in the UK.

Keep the Space Properly Ventilated

To have an instant cooling effect in your house, the air conditioning vents must not be blocked by furniture or any other item. If the vents are blocked, you will not be able to receive the maximum output from your AC unit. For the best results, ensure that there no obstructions near your AC unit. The clearance distance varies from one manufacture to another, however, the general rule is to have 1 foot (or 12 inches) of free space around the unit.

Install the Indoor Unit As High as Possible

When installing your AC unit, make sure that you place it near the ceiling of your room. This rule is based on simple physics. Hot air rises, so the nearer the ground your unit is, the longer it will take to cool the room.  This will lead to increased power consumption, and higher electricity bills.  Placing an air conditioning unit higher will also ensure that there is less opportunity for objects to hinder the airflow, and at this height there is more room to place all the pipes and ducts.

Place the Indoor Unit in a Shaded Area

Continuous exposure to sunlight will increase your AC unit’s workload and can have a negative impact on its performance. The increased workload will eventually result in the premature wear and tear of your AC unit.

If possible keep your curtains and blinds closed, as this can increase the air conditioner’s lifespan and reduce expenses. Install your indoor unit away from heat-generating items, such as bulbs, gaming consoles, and other electronic items, otherwise the AC unit will need to work harder to maintain the overall room temperature.

The Correct Location for the Outdoor Unit

Just like the indoor unit, the outdoor one also requires to be placed in a well-shaded area.  Sunlight, along with the heat that is generated from the condenser, can cause overheating issues.

Moreover, the outdoor unit should be placed on a flat and rigid surface. The unit contains a condenser, a compressor, a fan motor, etc. everything to keep an AC functional. Without any proper support, the vibrations from a poorly installed outdoor unit can be excessive, which can then cause breakage of copper wires, coolant leakage or compressor/condenser damage.


If you are considering a domestic air conditioning installation, please ensure that you have researched and considered the factors mentioned above before the start of the installation process.

However, for a seamless installation, we would recommend you choose a specialist air conditioning installer to guide you through the complicated process. They will help you choose an air conditioning unit that is specific to your requirements, and ensure that it is installed correctly. 

If you would like to speak to a recognised and respected expert in this field, call our fully trained and certified air conditioning installation experts at Evergreen Environmental on 08081781678.

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