Apartments and flats in the UK are designed to keep us warm through the British winter. For this reason, they are not great at keeping us cool during the summer months. If you live in a city such as London, many high-rise flats have large windows and little ventilation. Many London residents see their apartments reach 30°C plus in the summer, making it difficult to relax in your home. Whether or not you can install air conditioning in your UK flat or apartment will depend on a few factors.
Do You Own Or Rent Your Flat?
Firstly, if you own your flat, it is up to you to decide whether you want to install air conditioning in your home. Secondly, it is essential to check with your local authority whether you need planning permission. Some buildings, particularly in cities such as London, can restrict what external modifications you can make, even if you own the property. If you rent, it is essential to check whether installing air conditioning is permitted with your landlord before proceeding with the installation.
Do You Require Planning Permission?
Many city-based apartments are subject to planning permission when it comes to installing air conditioning. This is due to the external condenser in traditional air conditioning units that are fixed to an external wall on the property. These units affect the appearance of the building and create possible noise pollution for neighboring properties. In addition, if you live in a listed building, it will be subject to its own set of building restrictions. Check with your local planning authority if you need to apply for planning permission.
What Are My Options If Planning Permission Is Denied?
It is important to note that your local authority may not grant you planning permission if your building is subject to certain restrictions. This is quite often the case in city-based apartments and flats. If this is the case, do not worry, there is an alternative solution. You can install water cooled air conditioning with no need for planning permission.

What Are Water Cooled Air Conditioners?
Water cooled air conditioning is an alternative to traditional air conditioners. They are designed for restricted properties such as apartments and Grade II listed buildings. Engineers install the condenser inside of the property as opposed to an external wall. This allows you to install air conditioning in your flat or apartment that you do not require planning permission to install this type of system as they are fully internal.
They feature the following benefits:
- Internal water cooled condenser
- Energy efficient
- Compact and hidden condenser
- Suitable to install in apartments and Grade II listed buildings
- No planning permission required

Where Are Water Cooled Condensers Installed?
The main difference between traditional and water cooled units is the condenser. Traditional systems vent hot air through the external condenser whereas internal units rely on water to cool the air. There is a common misconception that internal condensers are large or invasive to install. This is simply not the case. Water cooled condensers are compact and hidden in a concealed space such as under the kitchen sink or hallway cupboard. This means that they do not impact the visual aesthetic of your home, especially in flats where space is often limited.
Talk To The Experts
Armed with over 30 years of experience, we are your local experts in water cooled air conditioning. We have helped thousands of homeowners across London and the home counties find the ideal air conditioning solution for their property. We understand that no two properties are the same, and that’s why we offer a bespoke installation service, tailored to your individual needs. Get in touch today for a free consultation and quote with one of our dedicated engineers!