Maintaining Domestic Air Conditioning at Your Home in UK

The installation of domestic air conditioning in the UK has become a must have for the hot summer months.

If you have recently installed an air conditioning unit, it is of utmost importance that you maintain your unit so that it can perform at its best.  Did you know that some parts of an AC unit including, filters, coils, and fins, require proper maintenance for them to function correctly. Neglecting any necessary maintenance can result in substantial repair bills later on, as well as a shorter lifespan of the unit.

After your domestic air conditioning installation, you will need to perform regular maintenance checks.

Here’s a guide to maintaining a split air conditioning system.

Air Conditioner Filters

Filters should be your top priority. Dirt and debris will slowly start to collect on your AC’s air filters. Not cleaning them regularly can cause that dust to escape into your room and cause health issues. This kind of leakage can degrade air quality and cause severe issues for someone with dust allergy or asthma. Moreover, clogged filters can reduce airflow and system efficiency, ultimately causing your system to malfunction, a costly situation that most people would not welcome.

Air Conditioner Coils

The evaporator and condenser coil can collect dirt from the filters over time, which is why it is so important to clean your filters at regular intervals to avoid this.  However,  despite best efforts, the coils will still collect a certain amount of dirt. This dirt causes a film around the evaporator coil to form, making it difficult for the coil to absorb heat and reducing the airflow. The outdoor condenser coil could also collect debris from the outside. You can easily find the condenser coil in your outdoor unit and check if it requires any maintenance.

Coil Fins

Aluminium fins over the evaporator and condenser coil can be bent easily. A tool called a “fin comb” is available to purchase. Your air conditioning technician can use this tool to make the coil fins go back to their original state.

Clean and Clear Drains

Once in a while, try passing a copper wire through the drain pipes of your system. If the drain is clogged, it will be challenging to reduce the humidity. High humidity levels on the inside can cause your walls and carpet to become discoloured.

Sealed Rooms For Better Cooling

For through the wall or window air conditioners, you should also inspect the seals around the unit.  Ensure that there are no gaps that can allow air in or out as this can cause moisture to collect, causing damage to the seals. Also any gaps can also allow unwanted insects to enter your property and also possible contaminants from the outside.

Winter Preparations

When the winter season is around the corner, cover your wall mounted indoor AC unit. Also, cover the outdoor unit with a plastic sheet or a cloth to prevent any dirt from getting in it.

Know When You Need Help

If you think that your unit requires an inspection by a professional, hire an A/C technician. The technician will help you with any problem in your air conditioning system.

Our dedicated team at Evergreen Environmental would be happy to assist you, so please contact us today on 08081 781 678. 

Alternatively you can email us at or complete the online form to receive a response within 24 hours.

Tips for Wall-Mounted Air Conditioning Installation



When considering a domestic air conditioning installation there are several important factors that should be taken into account. In this article, we identify  the key considerations, and give you some useful guidelines on how to locate the best place to install your air conditioner.

The exact location of your wall mounted air conditioning unit will need to be carefully planned, ensuring that it is installed in an unobstructed position, at the correct height and away from heat generating sources.  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.

Keep the Space Properly Ventilated

In simple terms your AC unit absorbs hot air from within your room and circulates cool air. Some systems have reverse-cycle technology, (which means they can heat as well as cool) they draw heat from the air outside and distribute it around the room.  For either of these processes to happen effectively your unit will need to be located in an unobstructed position where air can flow freely around it. 

To have effective temperature control in your house, the air conditioning vents must not be blocked by furniture or any other item. If the vents are obstructed, you will not be able to receive the maximum cooling and heating benefits, and in addition your unit will be forced to work harder resulting in high energy consumption and the increased risk of a mechanical breakdown requiring an emergency repair. The clearance distance varies from one manufacturer to another, however, the general rule is to have 1 foot (or 30 centimetres) of free space around the unit.

Install the Indoor Unit As High as Possible


When installing your indoor 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, it is also out of harms way, and at this height there is more room to place all the pipes and ducts. If you are using your unit to cool your room, for maximum comfort, ensure that your louvres are pointing either at an upwards angle or are horizontal.  When used for heating ensure the louvres are pointing downwards.

Of course there are always exceptions to rules, in areas that have restricted ceiling heights, or lack of usable wall space, floor mounted units are called for and these are designed to be installed at low level.

Be sure to consider the construction of the wall where your wall unit is to be located. On average wall units weigh in at about 12-15 kg so a reliable and sturdy fixing will be required.

Your air conditioner will also require regular service and maintenance checks, so a service technician will need to have easy access.

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.

Where to install a WiFi enabled AC System


A smart air conditioner connects to your home’s local WiFi network and can be controlled via a smartphone app, or even voice control using Alexa or Google Home.  These high spec features give complete flexibility on temperature control, and they even allow you to monitor consumption, but for them to work effectively you will need to locate your unit within range of your router.

The Correct Location for the Outdoor Unit

Just like the indoor unit, the outdoor one also requires to be placed in a shady, dry and well ventilated area and out of harms way.  Sunlight, along with the heat that is generated from the condenser, can cause overheating issues.  Make sure the area chosen is away from trees, undergrowth and excessive dust.

The outdoor unit should be placed on a flat and rigid surface and ideally,  if the situation allows, against a wall. 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. 

Although modern day units are much quieter than their earlier counterparts, they still produce a certain amount of noise.  Try not to locate your unit close to any bedrooms and try to  keep your neighbours ‘sweet’ by placing the unit as far away from their property as possible.

The minimum and maximum allowable distance for the pipe run between inside and outside units may vary between manufacturers, your specialist installer will ensure that your installation adheres to the individual manufacturer guidelines.

Finally, there may be planning restrictions which may  affect the location of your air conditioner.  Listed Buildings and properties situated in Conservation Areas will need permission granted prior to installation.  


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, either call our fully trained and certified air conditioning installation experts at Evergreen Environmental on 08081 781 678 or fill in our contact form and one our dedicated team will be in touch within 24 hours.