Castle Refrigeration and Heating Services Ltd is a, Middlesex based, family run business who have been designing, installing, maintaining and repairing HVAC systems for over 20 years. We are a Daikin D1 approved partner, selected by Daikin UK for our high standards of installation and expertise in design and product knowledge. We specialise in all elements of HVAC installations from commercial CAT A office space, hotels, hospitality and retail space to domestic residential homes & flats. Working on such a varied range of projects has enabled us to ensure that our customers receive the best design, service and installation tailored to their individual needs - no matter how simple or complex. We have developed proven solutions for a large variety of project types seeing the project through from conception to completion. Our aftersales support provides tailored maintenance packages to ensure continued optimum performance and efficiency from our installations.

Key services and capabilities :

  • Full HVAC turnkey Services - Installation, Maintenance and Repair 

  • Innovative solutions for Net Zero compliance

  • Renewable Energy projects (Heat pump - Air & Ground Source)

  • Energy reduction and decarbonisation advisory services

  • Indoor air quality monitoring

  • CO2 controlled systems (influenced by area occupancy level) 

  • Industry recognised Heat load calculation programs

  • Inhouse CAD design facilities

  • Thermal Imagining facilities

Client benefits:

  • ​Full site survey, consultation and quotation submission.

  • Full project consultation to ensure we have a comprehensive understanding of our clients functional and aesthetic requirements.

  • Minimal disruption to occupied offices and working environment through flexible working practices

  • Dedicated Service and breakdown engineers minimalising down time

  • Computer generated commissioning data and F-Gas compliance documentation 



Castle Refrigeration and Heating Services have worked at many prestigious locations across London and the south of England.

Lee Valley Velopark, Design and Installation of a CAT A HVAC system to utilise redundant space post Olympic games. 

Victoria, London. In excess of 3000 chilled beam hoses replaced in order to create a leak-free cooling system 

Victoria, London. Extensive works on the HVAC equipment to increase efficiency and reliability utilising state of the art heat pump technologies

Threadneedle Street, London, Cat A, Daikin 3 pipe VRV system heating and cooling plus CO2 variable fresh air system.

Beech Street, London. 90 fan coils and 6 VRV systems replaced with Daikin Q systems to increase efficiency and comfort levels. 

Soanne Point, Reading. The upgrade of 2 floors from R407C/R22 split systems to 3 pipe VRV systems, heating and comfort cooling throughout. 

West Point, Bristol, 58 Daikin splits units supplied and installed 

Temple Meads, Bristol. A complete office refurbishment, Daikin 3 pipe VRV with independently controlled heating and cooling zones.   



For any enquires please call:

Office: (+44) 01932 765309

Mobile: (+44) 07958 303604 

Email: info@castleaircon.co.uk

or alternatively fill out the following form below. 


To apply for a job with Castle Refrigeration, please send a cover letter together with your C.V. to: info@castleaircon.co.uk