Expert Water Cooled Air Conditioning in Kensington & Chelsea
The Royal Borough of Kensington and Chelsea has some of London’s most prestigious — and most restricted — property. Grade II listed buildings, conservation areas, and luxury apartment buildings make external AC virtually impossible throughout the borough.
Hidden Cool provides specialist water cooled air conditioning systems that operate entirely within your property. No outdoor condensing unit. No external modifications. No planning permission required. Just powerful, efficient cooling and heating — completely hidden from view.
As the sole UK distributor of HiddenCo’s Italian-engineered water cooled systems, we offer a premium product that no other installer can match. Our A++ energy-rated units are designed specifically for restricted properties and deliver the same cooling performance as traditional split systems — without any of the external equipment.
Why Water Cooled Air Conditioning?
Almost the entire Royal Borough is covered by conservation areas. Listed buildings in South Kensington, Chelsea, and Notting Hill have extremely strict planning controls. Luxury apartment buildings universally prohibit external modifications to preserve the streetscape.
Our water cooled systems solve these challenges completely. The condenser unit connects to your mains water supply and is installed internally — typically in a kitchen cupboard, utility room, or bathroom vanity. It takes up minimal space (our smallest unit measures just 500mm x 500mm) and operates whisper-quietly.
The system connects to stylish wall-mounted or ducted indoor units in the rooms you want to cool, giving you precise temperature control in every space. One internal condenser can power multiple rooms, making it a cost-effective solution for larger properties.
Key Benefits
No outdoor unit — everything is installed inside your property, with zero impact on the building’s exterior.
No planning permission — because the system is fully internal, there are no planning requirements to navigate.
Powerful performance — water conducts heat more efficiently than air, delivering excellent cooling even on the hottest days.
Heating included — our systems provide both cooling and heating, giving you year-round comfort from a single system.
A++ energy rated — Italian-engineered for maximum efficiency and minimum running costs.
Whisper quiet — designed for residential use, our units operate at noise levels comparable to a domestic fridge.
Our Installation Process
Every Hidden Cool installation follows the same professional process:
1. Free consultation — we discuss your property, your requirements, and the best system configuration for your space.
2. Site survey — our engineers visit your property to check water supply access, pipe routes, electrical capacity, and optimal unit placement.
3. Custom proposal — you receive a clear, detailed quote with no hidden costs.
4. Professional installation — our F-Gas certified engineers complete the work neatly and efficiently, with minimal disruption to your routine.
5. Commissioning & handover — we test everything, walk you through the controls, and ensure you’re completely comfortable with your new system.
Serving Kensington & Chelsea and All of London
From Holland Park mansions to Chelsea riverside apartments, Hidden Cool is the water cooled AC specialist trusted by property owners in London’s most prestigious borough.
Hidden Cool is based in Mitcham, South London, and provides water cooled air conditioning installation, maintenance, and repair services across all London boroughs. Our team of experienced, F-Gas certified engineers deliver the same high standard of work whether you’re around the corner or across the city.
Ready to get started? Contact Hidden Cool today for a free, no-obligation consultation. Call us on 020 8669 1112 or request a quote online.
Frequently Asked Questions
How much does water cooled air conditioning cost?
The cost depends on the number of rooms, system size, and complexity of installation. Contact us for a free, tailored quote for your Kensington & Chelsea property.
How much water does a water cooled AC system use?
Water consumption varies by unit size and usage. Our engineers will advise on expected consumption during your consultation. Running costs are comparable to traditional split systems.
Can I install water cooled AC in a rented flat?
Yes, with your landlord’s permission. Because the system is fully internal and non-destructive, many landlords approve installation readily.
How long does installation take?
Most single-room installations are completed in one day. Multi-room systems typically take 1-2 days depending on complexity.