The leading experts in HVAC solutions, backed by over 100 years of innovation in the cooling industry.

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Explore Our Full Range of HVAC Technologies

Air Handling Units

Custom-engineered air handling systems optimised for high airflow efficiency, indoor air quality, and compliance with building regulations in commercial and public-sector environments.

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Service & Maintenance

Comprehensive planned maintenance and rapid-response support services, including F-Gas compliance checks, system diagnostics, and long-term performance protection.

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Chillers

Versatile and energy-efficient cooling systems, including oil-free and low-GWP options, suitable for retrofit projects and new developments across a wide range of building types.

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Heat Pumps

Integrated heating and cooling solutions that deliver consistent performance, reduce carbon emissions, and support compliance with the UK’s long-term decarbonisation objectives.

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Latest News

Valerio Micali Featured in Elemental’s Spotlight on Holistic HVAC We’re proud to share that Valerio Micali, Managing Director of Daikin Applied (UK), was recently interviewed by Elemental as part of their Spotlight on Holistic HVAC series. In the ...
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Quick Summary Daikin’s air handling unit (AHU) solutions for industrial applications deliver exceptional performance in environments where air quality is critical—such as pharmaceuticals, electronics, and food production. These AHUs ensure complia...
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Unlocking Efficiency: Retrofit Kits to Optimise Daikin’s Small Inverter Chiller (R-32) In a climate of rising energy costs, tightening sustainability regulations, and growing operational demands, optimising your HVAC systems is more than a nice-to...
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Daikin enhances its Data Centre cooling solutions with the new Pro-C CRAH range. Daikin announces the launch of its new Pro-C Computer Room Air Handler (CRAH), extending its Data Centre product portfolio. Designed to meet the cooling needs of any ...
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HVAC Solutions Tailored to Your Building and Industry

Every building has specific operational and compliance requirements. Daikin Applied provides sector-specific HVAC systems engineered to maximise performance and sustainability.

Daikin Data Centre Solutions

Coordinate globally - engage locally.​ The global Daikin network providing dedicated expertise at your location. ​

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Stock Units - Fast delivery

Daikin stock units are available for fast delivery. Among the stock products you will also find a choice of R-32 chillers and heat pumps readily available for HVAC projects.

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IAQ Solutions

The expression Indoor Air Quality (IAQ) refers to the air quality in indoor environments, which affects building occupants during their everyday lives. Check out why IAQ matters.

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Why Choose Daikin Applied UK

Daikin Applied UK (formerly McQuay UK Ltd) Daikin Applied UK is the market leader in energy efficient Air Handling Units (AHU) and Chillers, and specialises in large scale bespoke projects from data centres and hospitals to pharmaceutical facilities and process cooling. We offer world leading end-to-end solutions for facilities managers and engineering professionals within the HVAC community with an after sales service of full life cycle care through Daikin Applied Service.

UK-Based Design, Manufacturing & Support

End-to-end HVAC expertise delivered locally, with engineering, production, and service teams based throughout the UK.

HVAC for Complex Requirements

Flexible system configurations tailored to meet the demands of unique building specifications and operational challenges.

Compliant, High-Efficiency Equipment

Products engineered to meet or exceed UK Part L standards and F-Gas regulations, supporting energy savings and legal compliance.

Driven by Innovation & Net-Zero Goals

Ongoing investment in low-carbon technologies and refrigerant alternatives aligned with the UK’s sustainability roadmap.

Daikin Applied Service

Our commitment doesn't end at installation. With Daikin Applied Service, you gain access to expert support that extends across the full lifecycle of your HVAC system. From smart diagnostics and performance optimisation to emergency repairs, we ensure your equipment continues to deliver maximum efficiency, compliance, and uptime.

We work directly with facilities managers, building operators, and consultants to maintain mission-critical HVAC environments.

Remote Monitoring & Smart Diagnostics

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Performance Optimisation & Upgrades

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Important HVAC Projects

 

Read about how Daikin can provide valuable technological solutions for different projects and applications.

CERN

Where scientists, engineers and technicians build and run accelerators, detectors and computing infrastructures, to probe the fundamental structure of the universe.

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Negative CO2 emission Data Centre

Daikin has supplied 4 water cooled VZ chillers to meet the cooling needs of a negative CO2 emmisions Data Centre in Sweden

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Optimised Air Handling for a Prestigious Scottish University Sports Complex

Daikin Applied (UK) upgrades Edinburgh University’s sports complex with a high-efficiency AHU, improving ventilation, energy use, and performance.

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The highest peak in Applied solutions

Whether you're upgrading legacy equipment, seeking guidance on compliance, or specifying systems for a new development — our experts are here to help.