Through the Wall Air Conditioning

Our through the wall air conditioning systems for your property

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Air Conditioning that suits your style

Through The Wall Air Conditioning With Internal Condenser (no external unit)

Property restrictions are one of the main obstacles you may encounter when choosing the right air conditioning unit for your home or office. Our through the wall air conditioning units are a great alternative to conventional air conditioning systems and as a result, the ideal solution if you are not allowed an outside condenser. This solution is perfect for homes such as flats, apartments, offices and is suitable for installation if you have an external wall.

parkair through the wall air conditioner

Our Through The Wall air conditioning units


  • Reduced Water Consumption
  • Class A+++/A++
  • Gas R32
  • Maximum Silence
  • Full DC Inverter + H2O Inverter

Over 30 years of Air Conditioning expertise

Since starting in 2002, ACS Installations is the leading supplier of conditioning products and installations in London and Home Counties.

We offer a bespoke installation service to suit your needs and requirements. If you are looking for an internal air conditioning system, we should be your first choice. 

We have installed hundreds of internal condensers all over London and the Home Counties.

Certified Experts
Bespoke Installations
air conditioning engineer smiling next to wall mounted air conditioner after installation

Through the wall Air Conditioning System Features

Guaranteed Quality

We have accreditations from F-Gas and more so you are in safe hands.

No Outside Unit

We are the pioneers of water cooled air conditioning units in the country.

Minimal Fit

Fitted through the use of a wall sleeve. This prevents unwanted drafts.

Condenser Hidden

We tailor our installations based on your specific requirements.

Quiet When Used

This unit is incredibly quiet when being used to cool your space.

Dedicated Helpdesk

Our London based help desk engineers can assist you when you need us.

Where to install through the wall air Conditioning

Through the wall air conditioning units are ideal for properties with restrictions.

water cooled air conditioning for apartments

Water cooled units are ideal for restricted properties such as apartments where an outdoor condenser unit is not allowed.

listed building

Listed Buildings

If you live in a Grade II listed building, a water cooled unit can be installed with no planning permission required.


Water cooled units are ideal for single rooms with limited space or planning permission restrictions.

How it works

Water cooled systems are plumbed directly into your water supply. They use the cold water in a controlled manner to cool the air through the piping system. Unlike traditional air conditioning systems, water cooled units do not require an outdoor unit. The internal condenser is usually hidden within the property in a concealed space such as a cupboard or under the kitchen sink.

Mains Water Supply
Internal Condenser
internal wall mounted water cooled air conditioning how it works diagram
Patty CarterPatty Carter
23:38 08 Jul 22
Was very pleased with the work, very friendly and professional and they informed me of everything that they were doing. Going to tell all my friends about Various Comfort Solutions.
Michael EwingMichael Ewing
20:23 17 Sep 20
Job was done quickly with no hassle. Well worth the investment.
Lucas HumphriesLucas Humphries
20:06 17 Sep 20
Fantastic service! Really genuine and honest, always kept me in the loop. They were very efficient and the product itself was very much worth it. Highly recommend.
Talha FazlaniTalha Fazlani
13:22 17 Sep 20
I am glad I came across All Comfort Solutions because they are one of the few that offer and install water cooled air conditioning units in the London area. Living in a building where we are not allowed to have outdoor units can limit your choices, but the solution offered by ACS helped us overcome that.Highly recommended!

Frequently Asked Questions

Some of your questions about the through the wall air conditioner answered.

The simple answer is yes. You can install a through the wall air conditioning systems in a listed or restricted property. Contact us if you would like to discuss getting a water based AC in your home.

A typical single split type AC unit will take 1-2 days to install. We can give you a good estimate if you contact us and inform us about your property and what you require.

Modern units are very quiet. In the workplace, you rarely notice them while in bedrooms at night time certain specific night set back settings slow the fans down to reduce the cooling requirement in line with falling ambient temperatures.


A single AC unit of average size will run at a similar cost to a domestic fridge as modern technology allows the power element of the unit to speed up and slow down according to the demand.

Contact our specialist team

0208 669 1112
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