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Looking for a company that specialises in internal air conditioning in London?
Cool You specialises in designing and installing fully internal air conditioning systems for London apartments, flats, houses and listed buildings. Our specialist water-cooled systems require no external condenser, making air conditioning possible in many properties where conventional external AC equipment is unsuitable, restricted or simply unwanted.
From modern apartments in Canary Wharf and South Bank to mansion blocks in Kensington, converted warehouses in SE1 and period properties across central London, we provide discreet, high-performance air conditioning designed around the building and the people who live there.
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Which Companies Specialise in Installing Internal Air Conditioning Systems in London?
Cool You has specialised in fully internal, water-cooled air conditioning for over 15 years and was the first company to bring this type of system to the London market. Since then, we have built extensive practical experience designing and installing fully internal air conditioning for apartments, listed buildings and other properties where a conventional external condenser is unsuitable or restricted.
Unlike conventional air conditioning companies whose installations normally rely on an outdoor condenser, fully internal air conditioning is a core part of what we do.
Our systems are particularly suited to:
- London apartments and flats
- Leasehold properties
- Listed and period buildings
- Conservation areas
- High-rise developments
- Properties where an outdoor condenser is prohibited
- Homes where the owner wants to preserve the external appearance of the building
The condenser is located inside the property and uses water to remove heat rather than rejecting it through a conventional outdoor condenser.
That specialist experience is important. Fully internal air conditioning requires a different approach to conventional split systems, from condenser positioning and plumbing through to pipe routes, heat-load calculations and the practical restrictions commonly found in London properties.
Every Cool You installation is completed by our own experienced, F-Gas-certified engineers rather than being outsourced to subcontractors.
With over 15 years' experience and thousands of installations across London, we have developed extensive knowledge of cooling apartments, houses, listed buildings and other properties where conventional air conditioning can be difficult or impossible to install.
Looking for an internal air conditioning installer in London?
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Why Air Conditioning in London Requires a Specialist Approach
London presents particular challenges for air conditioning.
Modern developments frequently have extensive glazing and high levels of insulation. Older properties may be listed, leasehold or subject to conservation restrictions. High-rise apartments can also have sealed windows and limited natural ventilation.
At the same time, London experiences the Urban Heat Island Effect, meaning built-up areas can remain considerably warmer than surrounding rural locations.
Common causes of overheating include:
- Solar gain through large areas of glass
- Highly insulated and increasingly airtight buildings
- Restricted natural ventilation
- High-rise living
- Heat generated by appliances and home working
- Restrictions on altering the external appearance of a building
- Lease conditions that prohibit external condensers
That is why simply choosing a conventional air conditioning system is not always enough.
The installation needs to be designed around the property.
Fully Internal Air Conditioning Designed for London Apartments, Houses and Listed Buildings
Cool You does not simply take a standard outdoor air conditioning system and try to adapt it to a difficult London property.
We specialise in purpose-designed fully internal air conditioning.
Instead of placing the condenser outside the property, we install it internally. This allows us to create discreet cooling solutions without the conventional outdoor box associated with most split air conditioning systems.
Depending on the property and system selected, we can cool individual rooms or use a multi-split arrangement to air-condition several rooms from one compact internal condenser.
Our in-house team looks at the complete installation, including:
- Room size and heat load
- Available condenser locations
- Pipe routes
- Water and drainage connections
- Noise considerations
- Interior appearance
- Listed-building or leasehold constraints
- The number of rooms requiring cooling
The result is an air conditioning installation designed for your particular London home.
Internal Air Conditioning Solutions by London Property Type
Air Conditioning for London Apartments and Flats
London apartments are where fully internal air conditioning really comes into its own.
Outdoor condensers are frequently prohibited by the freeholder, managing agent or lease. In modern apartment buildings, there may also be nowhere suitable to install one.
A fully internal water-cooled system provides an alternative without placing conventional condenser equipment on the balcony, roof or external wall.
Air Conditioning for Listed Buildings
Traditional external air conditioning equipment can be difficult to accommodate sympathetically within a listed or architecturally sensitive property.
Because our condenser is positioned inside, fully internal air conditioning offers a discreet alternative where preserving the building's exterior is important. Always consider any relevant listed-building, freeholder or other permissions for the individual property.
Air Conditioning for London Houses
External condensers are possible in many houses, but they are not always desirable.
Homeowners may prefer a fully internal solution because of planning considerations, neighbouring properties, noise, limited outdoor space or simply because they do not want an external condenser affecting the property's appearance.
Air Conditioning for Loft Conversions
Loft rooms can become some of the hottest spaces in a London home.
Large roof windows, insulation and direct exposure to the sun can create significant heat gain.
Our internal air conditioning systems provide effective cooling without necessarily requiring condenser equipment on the roof or exterior of the building.
Why Choose Cool You as Your Internal Air Conditioning Installer in London?
Choosing the right system matters, but choosing an installer with experience in fully internal systems matters just as much.
The Original Specialists in Fully Internal Air Conditioning
Cool You introduced fully internal, water-cooled air conditioning to the London market more than 15 years ago. Since then, we have completed thousands of installations and developed extensive expertise in designing systems for some of London's most challenging residential properties.
No Conventional External Condenser
Our water-cooled systems place the condenser inside the property, so no conventional outdoor condenser is mounted on an external wall, balcony or roof.
Experienced In-House Engineers
Our own F-Gas-certified, DBS-checked engineers complete installations rather than subcontractors.
Thousands of London Installations
Cool You systems can be found in apartments, houses and residential developments throughout the capital.
Multi-Room Solutions
One compact internal condenser can be configured to provide air conditioning to multiple rooms, depending on the system and property.
Quiet Operation
Our systems are designed for residential environments, including bedrooms, living rooms and home offices.
Energy-Efficient Technology
Our systems use modern DC inverter technology and R32 refrigerant.
Fast, Carefully Managed Installation
Depending on the property's complexity, many installations can be completed quickly and with minimal disruption.
Long-Term Support
Our team provides ongoing maintenance and support after installation, along with warranty protection, subject to applicable terms.
Energy Efficiency
Great Air Quality
Elegant Design
Simple To Use
Quick Installation
No Outside Box
Internal Air Conditioning Installations Across London
Experience matters when installing specialist air conditioning.
Cool You has completed thousands of fully internal air conditioning installations across London, giving our team first-hand experience with a wide range of properties and building types.
Our installations include:
- Luxury apartments in Chelsea and Knightsbridge
- Mansion blocks and period properties in Kensington
- Converted warehouses and heritage properties in SE1
- Apartments in Canary Wharf
- New developments in Nine Elms
- Apartments and riverside developments in Battersea
- Properties around South Bank and Southwark
- Homes in Shoreditch
- Apartments around Barbican
- Properties across central, east, west, north and south London
Want to see whether we have installed air conditioning near you?
Explore our extensive library of London air conditioning case studies. Search for your area, postcode or development and you will likely find a Cool You installation nearby.
Explore our London air conditioning case studies
Trusted By London's Homeowners
For many of our customers, the first question is not which air conditioning unit to buy.
It is: “Can I have air conditioning in my property at all?”
This is particularly common in apartments, listed buildings and properties where the installation of an external condenser has already been refused or ruled out. Fully internal air conditioning can provide another option. Our customers regularly comment on our team's professionalism, the quality of the installation, and the difference effective cooling makes in their homes.
Don’t just take our word for it, check out our 5-star TrustPilot reviews from happy London customers.
Air Conditioning Without an Outside Box
Most conventional split air conditioning systems consist of an indoor unit connected to an outdoor condenser.
Cool You offers a different solution.
With our water-cooled air conditioning systems, we install the condenser internally. The refrigeration system transfers heat from the room to the water-cooled condenser, which removes it using the property’s water supply.
This makes the system particularly useful in London properties where:
- External condenser units are prohibited.
- There is no balcony or suitable outside space.
- The building’s appearance cannot easily be altered.
- The property is leasehold.
- The building is architecturally sensitive.
- The homeowner does not want an outside condenser.
Find out how water-cooled air conditioning works
Water-Cooled vs Conventional Air Conditioning
Conventional Split Air Conditioning
A conventional split system normally consists of an indoor air conditioning unit connected to an outdoor condenser. It is an excellent solution when you can install an outside unit. However, this is not possible or appropriate for every London property.
Fully Internal Water-Cooled Air Conditioning
A water-cooled system replaces the conventional outdoor condenser with a compact condenser positioned inside the property. This keeps the building's external appearance unchanged by a conventional condenser installation.
For many London apartments and restricted properties, this can make permanent air conditioning possible where a traditional split system is not practical.
Can Internal Air Conditioning Cool More Than One Room?
Yes. Depending on the property's layout and cooling needs, a single internal multi-split condenser can serve multiple room units.
For example, it may be possible to cool:
- A bedroom and living room
- Two bedrooms and a living area
- A bedroom and home office
- Several rooms within an apartment
During your survey, we calculate each room's cooling requirements and recommend the most appropriate configuration.
How Much Does Internal Air Conditioning Cost in London?
The cost of installing internal air conditioning depends on several factors, including:
- The number and size of rooms
- Required cooling capacity
- The type of indoor units
- Whether a single or multi-room system is required
- Pipe routes
- Condenser location
- Access
- The layout and construction of the property
Because London properties vary so considerably, the most accurate way to establish the cost is through a property survey.
Our surveyor can assess what is possible, explain the available options and provide a detailed quotation.
View our air conditioning costs
Do I Need Planning Permission for Internal Air Conditioning in London?
One of the main advantages of fully internal air conditioning is that there is no conventional external condenser attached to the building.
This can considerably simplify installations where external alterations are restricted. However, requirements vary between properties.
If you live in a:
- Listed building
- Leasehold apartment
- Conservation area
- Managed development
- Property subject to restrictive covenants
you may still need permission from a freeholder, managing agent, local authority or another relevant body, depending on the work required.
Our experience with London properties means we can discuss these issues with you during the survey and explain how the proposed installation would work.
Air Conditioning for Working From Home in London
Working from home has changed what many people expect from their homes. A room that's comfortable for occasional use can become extremely hot when occupied throughout the workday, especially where there is extensive glazing or direct sunlight.
Internal home office air conditioning can provide precise temperature control for:
- Home offices
- Studies
- Bedrooms used as workspaces
- Open-plan living areas
- Loft offices
Quiet operation is especially important in a working environment, so we design systems around both cooling performance and comfort.
Book a Free London Air Conditioning Survey
If you are looking for air conditioning in London but cannot or do not want to install an outside condenser, talk to Cool You.
We specialise in fully internal, water-cooled air conditioning for London homes.
During your survey, we can:
- Assess your property’s cooling requirements.
- Identify suitable locations for indoor units.
- Find an appropriate position for the internal condenser.
- Discuss pipe routes and discreet installation.
- Explain single-room and multi-room options.
- Consider any property restrictions.
- Recommend the most appropriate system.
- Provide a detailed quotation.
Book a Free Survey - call us now on 0207 043 2275 or fill out the form below.
Your comfort isn’t seasonal. It’s essential.