At John Cullerton & Sons Ltd we understand the importance of mechanical engineering and air conditioning solutions to your public or commercial market, and how it can help you succeed in the world of business by creating a productive working environment.

Over 25 years’ we have provided high quality solutions in mechanical, gas, air conditioning, ventilation, refrigeration, under-floor heating and commercial catering installations to clients in a wide range of sectors, as well as ongoing maintenance and repairs.

All of our team are fully trained, professional and security vetted, dedicated to providing you with the best solutions, whilst all of our vehicles are tracks. We also have PDAs to manage our projects and ensure success. Once completed, a client’s own certifications are available online via a secure portal.

Mechanical Services

Planning, installation and maintenance

  • Testing and certification for boiler plants

  • Gas installation

  • Heating and plumbing installations and maintenance

  • Air conditioning and ventilation installations and maintenance

  • Refrigeration

  • Compressed air systems

  • Chilled water systems and supplies

  • Under-floor heating systems

  • Commercial catering

  • Process technology systems

Mechanical testing and inspection

  • Gas installations

  • Air conditioning

  • Ventilation

  • Boilers

  • Heating

  • Plumbing

  • Refrigeration

  • Chilled water systems


Quality is at the heart of our business and we are Quality Assured to BSS9001. We pride ourselves on achieving high levels of repeat business through customer satisfaction and workmanship, underpinned by our ability to deliver all of our projects on time and within budget.Furthermore, we are fully accredited with the CHAS Safety Scheme, Apea, Safe Contractor, Constructionline, Gas Safe and the B&ES Association (formerly HVCA). We are also a Water Regulations (1999) Approved Installer.

Our services also include ongoing maintenance, so choose us in confidence as your mechanical contractors, knowing you can count on us time and time again.

To find out more about us and our services

Call us now 0191 383 1145

No obligation quotes available