Invisible.AC offers a versatile and efficient air conditioning, heating, ventilation and UV air purification solution for residential, commercial, new build and heritage buildings. Highly efficient air-handling units distribute cooled or warmed air through flexible space-saving small ducts, injecting the air at high velocity through discreet linear grill or round outlets.

The Invisible.AC system injects air into rooms with a high-velocity duct system – resulting in much better mixing than the low velocity ‘air-dumping’ of conventional HVAC systems. This ‘Aspiration’ technique was pioneered by an American jet propulsion engineer, Calvin McCracken, after he observed the swirling mixing of air surrounding jet engines.

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Product Features

An Invisible.AC solution combines air conditioning, heating, ventilation and UV air purification in a single system for year-round comfort. Skillfully sited high-velocity ‘Aspiration’ air-jets eliminate drafts and ensure a temperature differential no greater than 1ºC throughout a room, compared to the variation of up to 6ºC with conventional systems. The system also removes 30 percent more relative humidity. The reduced humidity means you can set the temperature higher, saving energy and running costs when cooling. System zoning gives users the flexibility and control to set precise temperatures for different conditions in different areas. The basic Invisible.AC Twin zone product allows up to full-duty in either zone!

Discreet Air Conditioning

With an Invisible.AC there is no need to compromise on appearance. Discreet small duct heating and cooling outlets for cool or warm air eliminate the need for ugly grills, wall-units, radiators and pipe runs. The single 25-mm wide linear slot ceiling, wall or floor outlets deliver a hidden air conditioning solution that blends with any traditional or contemporary décor. Inconspicuous round outlets are also available.

Quiet Air Conditioning

The Invisible.AC system is one of the quietest around. The use of acoustic technology throughout ensures that the system operates at low noise levels with minimum vibration. Sound-attenuating ducts, smooth running equipment, extensive insulation and low-turbulence outlets enable noise levels as low as NR20 for quiet areas in homes, hotels, restaurants and working areas in offices.

Efficient Air Conditioning

Invisible.AC systems are compatible with reversible heat exchanger units to provide air conditioning and heating from a single source. As well as eliminating the additional capital costs of installing two separate systems, the combination of a modern heat-pump and an Invisible.AC system can increase energy efficiency and energy savings by 300 percent over conventional fossil fuel installations. The ability to deliver draught free, constant, even temperatures and the potential savings from system zoning can increase energy efficiency even further.

Small Duct Systems

The compact Invisible.AC air-handling equipment fits easily in a roof or cupboard space with small, flexible mini-ducts running in ceiling voids or partition walls. This small duct cooling and heating (SDHVAC) system is quick and easy to install in new or existing buildings and is suitable for traditionally challenging properties such as historical buildings.

Meeting Your Requirements

It adds up to a single system for all your cooling and heating needs, giving you complete control over your living environment and saving you money. And, the Invisible.AC system is so quiet and discreet, you won’t even notice it.


Why architects select it

  • Discreet appearance with linear grill ceiling or floor slotted outlets to enhance any décor
  • Quietest air conditioning system on the market
  • Even temperatures and low humidity throughout a building
  • Improves air quality by reducing unpleasant and harmful odours, by neutralising undesirable and dangerous pathogens and by converting pollutants such as VOCs and hydrocarbon exhaust fumes into harmless gases.


Why developers prefer it

  • One compact air conditioning system to install, reducing capital costs
  • Offers owners even temperatures, comfort, quality and efficiency
  • Compact system frees more space for living
  • Enhances interior design with no pipes, radiators or ugly grilles


Why specifiers recommend it

  • Simple installation of space-saving small duct heating and
    in ceilings, walls or floors
  • Compact duct equipment fits in tight spaces, roof voids, etc.
  • Layout is flexible and easy to design
  • Up to 100% fresh-air, links to heat-recovery systems
  • Suitable for new builds, refurbishments and historic buildings


Why consumers use it

  • Whole house air conditioning
  • Comfortable living and working conditions all year round
  • Even temperatures and draught free
  • Controlled temperatures for different rooms
  • Lower energy bills – heat-pump compatible
  • Quiet induction air conditioning, pleasant environment

Perfect for every environment

Invisible.AC systems give architects, interior designers, mechanical engineers and installers the flexibility to develop customised solutions to meet the individual needs of different types of customers.

Residential Air Conditioning

Invisible.AC offers residential customers the convenience of a cooling and heating system that reduces energy costs. With zonal control, they can choose comfortable even temperatures for different rooms like the bedrooms or living areas. Plus, with the Invisible.AC Twin zone product – the full duty can used in either area!

Commercial Air Conditioning

Zonal control is one of the most important requirements in commercial properties like restaurants and retail outlets. Invisible.AC systems provide comfortable even temperatures and silent air conditioning for customers, while maintaining appropriate temperatures in working areas and protecting products in storage or on display.

Invisible.AC systems maintain comfortable, even temperatures in the office, helping to improve working conditions and increase productivity. They ensure quiet air conditioning operation in the office environment and maintain temperatures at a level that meets legislation. Individual outlets can simply be moved if office partition layouts change.

New Build Air Conditioning

Invisible.AC products are more discreet and compact than existing air conditioning technology systems, providing great performance whilst ‘invisible’. The small ducted air conditioning fits into the smallest ceiling void in new construction (<150mm). They can be easily integrated with fresh-air energy recovery ventilation systems.

Heritage Air Conditioning

Invisible.AC – the revolution possible with mini-duct air distribution. Historic buildings were never originally intended to have ducted air conditioning systems installed. Authorities, owners can now install a system that provides heating, cooling, fresh-air and dehumidification with out impacting on the visual appearance or the fabric of the building.

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    Contact Information

    If you have any questions regarding our product or would like to learn more about how Invisible.AC can benefit you, we would like to hear from you.

    T: +44(0)870 961 9661

    Invisible.AC Limited
    St John’s Innovation Centre
    Cowley Road, Cambridge
    CB4 0WS, United Kingdom
    Company No. 04581610

    Distributed by

    Invisible.AC Spain

    P.O. Box 29, Marbella, Malaga

    T: +34 693 795 953

    Terry Pearson
    T: +34 693 795 953

    Savitru Aircon Pvt.Ltd

    A-9, Vimal Udog Bhaven
    119, Taikalwadi Road, Mahim,
    Mumbai 400016, India

    T: +91 22 2421 6755
    F: +91 22 2438 4555

    Bhushan Marde
    T: +91 98201 59998

    Invisible.AC Oceania

    T: +64 9889 8312