Cassette Air Conditioner Installation

Cassette air conditioners sit flush in the ceiling, with only a discreet grille visible from below. They distribute conditioned air in four directions simultaneously, making them the preferred choice for open-plan offices, restaurants, retail spaces, and larger rooms where wall-mounted units would be impractical or visually intrusive. We design and install cassette systems across London and Essex, with a free site survey before any work begins.

Request a Free Quote
Book a Site Visit
Step 1 of 7

Find the right air conditioning system for your space

Flush Ceiling-Mounted, No Wall Space Used

Four-Way Air Distribution

Ideal for Commercial and Open-Plan Spaces

Cassette air conditioner installed in an office ceiling

Why Choose Lux Cooling to Install Your Cassette AC?

  • Experienced with Ceiling-Mounted Systems: We have installed cassette units across offices, schools, restaurants, and homes throughout London and Essex for over 20 years. We know the pipework routing and structural considerations involved.
  • Ceiling and Structural Assessment Included: Our free site survey covers ceiling void depth, joist position, and drainage routing to confirm suitability before any work is agreed.
  • Clean, Discreet Finish: We take care of all the installation including pipework concealment, condensate drain routing, and a tidy, plastered finish around the grille where needed.
  • Part of a Wider AC Service: We also carry out AC repairs and servicing on all makes and models.
Enquire now

Why choose us for your cassette air conditioning installation?

  • 20 Years of Experience

    We have installed and maintained AC systems for over 20 years in homes and businesses across London and Essex.

  • Free Survey and Quote

    We carry out a free site survey and provide a full written quote before any work is agreed. No call-out charges.

  • 1-Year Installation Warranty

    All our installations are backed by a 1-year warranty on workmanship.

  • Commercial Fit-Out Experience

    We regularly install cassette systems in offices, retail units, and hospitality venues, working to agreed programmes to minimise disruption.

  • Multiple Units, One Outdoor Condenser

    A single outdoor condenser unit can support multiple cassette indoor units, reducing the number of external installations needed on roofs or walls.

  • London and Essex Engineers

    Our engineers are based in Loughton and cover the whole of London and Essex, with fast response and local knowledge.

Cassette AC unit installed in the ceiling of a London restaurant

Where Are Cassette Units Installed?

Cassette air conditioners require a ceiling void deep enough to house the unit body and allow condensate drainage. They are the standard choice wherever a wall-mounted unit is either impractical or unwanted. Common installations include:

  • Open-plan offices and managed workspaces
  • Restaurants, cafes, and hospitality venues
  • Retail units and showrooms
  • Schools, leisure centres, and healthcare facilities
  • Large living rooms and open-plan residential spaces

We carry out a full ceiling assessment during the survey to confirm void depth and drainage options before recommending a cassette system. Explore our full AC installation service or see our London and Essex pages for area-specific information.

Check suitability for your property

Benefits of Cassette Air Conditioning

Cassette units offer a different set of advantages over wall-mounted alternatives, particularly in larger spaces or commercial settings where even air distribution matters.

  • Even cooling across the whole room: Four-way airflow means there are no cold or warm spots, which is particularly important in open-plan spaces.
  • No wall space taken up: The unit body sits entirely above the ceiling, so there is nothing on the walls at all. Only the grille is visible.
  • Quieter operation at desk level: The unit body is above the ceiling, which reduces the noise level at occupant height compared with wall-mounted alternatives.
  • Supports larger room volumes: Cassette units are available in higher capacities than most wall-mounted units, making them suitable for larger spaces.
  • Heat pump functionality: Most modern cassette units operate in reverse-cycle mode, providing efficient heating in winter as well as cooling in summer.
Cassette AC grille visible in office ceiling tiles

Types of air conditioning

Whether you’re looking for AC for a single room, an office, a school, or an industrial complex, we at Lux Cooling Group have the solutions for you. If you’ve been wondering ‘what type of air-conditioning is the best?’ then our handy guide has everything you need to know…

Cassette Air Conditioners

Cassette air conditioners are installed within the ceiling, leaving only a discreet grille visible. They distribute air evenly in multiple directions, making them ideal for larger rooms, open-plan spaces, and homes where a clean, unobtrusive appearance is preferred.
Cassette Air Conditioners

Ducted Air Conditioning Systems

Ducted air conditioning provides whole-home climate control through a network of concealed ducts. Air is distributed evenly throughout the property, while zoning options allow different areas to be cooled independently for enhanced comfort and energy efficiency.
Ducted Air Conditioning

Multi-Split Air Conditioners

Multi-split air conditioning systems connect several indoor units to a single outdoor unit. They allow independent temperature control in multiple rooms, making them a practical solution for homes that require flexible comfort without installing multiple outdoor condensers.
Multi-Split Air Conditioners

Window Air Conditioners

Window AC is most suited to those that are looking to cool a single room or a small area. As the name suggests, these systems are installed by a window or by making a hole in the wall.

Window Air Conditioners

Keep Your System Running All Year

Installation is just the beginning. We offer annual servicing and maintenance packages to keep your system efficient, extend its working life, and protect your warranty. Our engineers cover all of London and Essex and can respond quickly to any service call.

AC Maintenance Services
Lux Cooling Group engineer carrying out an AC service

Aircon Installation Across London and Essex

We carry out installations across London and Essex from our base in Loughton. For location-specific information, visit our London or Essex pages.

Explore other system types, see: Cassette Air Conditioners | Multi-Split Systems | Window Units | Duct Air Conditioning.

Get a free survey

London

  • All London boroughs
  • East and West London
  • North and South London
  • Central London

AC installation in London

Essex

  • Chelmsford, Colchester
  • Brentwood, Harlow
  • Basildon, Southend
  • All Essex towns

AC installation in Essex

Frequently asked questions about cassette air conditioning

How much ceiling void depth does a cassette unit need?
Most cassette units require a ceiling void of at least 250 to 300mm to accommodate the unit body, the refrigerant pipework, and the condensate drain outlet. We measure this during the site survey and confirm suitability before recommending a cassette system. If the void is too shallow, we may recommend an alternative system type.
Can a cassette unit be installed in a domestic property?
Yes. Cassette units are commonly installed in large living rooms, open-plan kitchen-diners, and basement rooms where a wall-mounted unit would be ineffective or visually intrusive. The key requirement is adequate ceiling void depth. We assess this at the survey stage and advise on the most suitable unit size and position.
How does condensate drainage work in a cassette system?
Cassette units produce condensate water during the cooling process. This is collected in an internal tray and pumped out through a small drain pipe, which we route to an appropriate drain point during installation. We plan the drain route as part of the survey to ensure a clean, tidy finish without visible pipework.
How much does cassette air conditioning installation cost?
Costs vary depending on the capacity of the unit, the number of units required, and the complexity of the ceiling void access and drain routing. We carry out a free site survey and provide a full written quote before any work is agreed. Contact us to arrange a survey at your London or Essex property.
Can cassette units be linked to a multi-split outdoor unit?
Yes. Cassette indoor units can be connected to a multi-split outdoor unit, allowing multiple rooms to be served by a single condenser. This is a common approach in commercial fit-outs and properties where multiple areas need cooling but roof or wall space for outdoor units is limited.

Quick contact

Name
GDPR

Trusted cassette air conditioning installers in London and Essex

With over 20 years of experience, we install and maintain cassette air conditioning systems across London and Essex. Free site surveys, transparent pricing, and a 1-year warranty on all installations. Get in touch and we will arrange a visit at a time that suits you.