Here at CER we are proud to offer an in-house full 360 process, staring from the Design all the way to the annual Maintenance visits. We take on projects and site of all sizes - there is no job to small or too great. To find out more on what we can offer, please find information on the relevant pages.





Why Choose CER?

There are many reasons why! See for yourself..

  •  42 years of experience providing Air Conditioning & Ventilation services to hundreds of happy commercial and residential customers - John started the business 42 years ago and put a footprint for success in motion. The 'younger' generations are now in place to take the company through another 40 years and beyond. We will be here to support your business into the future, not just in the short term.
  • We care - Coming from humble beginnings and being a family run business we actually care about yours! We treat every client and job with the same care, enthusiasm and quality of work, no matter how big or small your project is.
  • We are REFCOM registered; your equipment will be in good hands.
  • We are honest - What you see is what you get with CER, no hidden agenda or plan, just old fashioned business ethics, with a modern service. Unlike other companies we are not afraid to admit a mistake, although rare to happen, we will move heaven and earth to put it right quickly and in the right manner. Honesty between ourselves and clients is the fundamentals of a good working relationship.
  • We will carry out a FREE site survey and provide a quotation tailored to your needs.
  • We are reliable, trusted, and quick to respond team of Air Conditioning and Refrigeration experts and friendly office support staff - give us a call to find out more. We pride ourselves on quality of service throughout, speed of reaction to a problem, thoroughness in reporting and sound engineering throughout. Our engineers are motivated by high standards and walking away from a job with their head held high.
  • We are endorsed by the industry – Accredited installer for Mitsubishi Electric & Daikin / Toshiba and many more.
  • We are your local company! We cover Nationwide including Ireland.


Contact us on 01923 266 866 or send us an enquiry.




Monday-Friday : 06:00 - 20:00

Saturday-Sunday : As Above


Unit 7, Monaco Works, Station Road, Kings Langley, Hertfordshire, WD4 8LQ


+44 1923 266 866