•  CGSYS for commercial services, including North London, Central London, West London, and other districts

    Gas Safe Registered & Certified

    Our team is fully certified and highly-trained, with years of experience on commercial and residential systems.

  • A woman in a blue shirt labeled 'Certified Gas Gas Inspector' is testing gas levels with a portable device in a classroom laboratory. In the background, four students in white lab coats and a teacher are working at lab stations with glassware and equipment.

    Our core mission

    Our core mission is to safeguard learning environments by providing specialist gas safety testing and inspections, ensuring every school kitchen, laboratory, and plant room is compliant, safe, and secure for students and staff.

    We understand that true safety is the essential foundation upon which great education is built. It is our fundamental responsibility to ensure that the spaces where students discover, create, and thrive are free from preventable hazards. Our team of certified specialists goes beyond simple compliance checks; we conduct meticulous, in-depth assessments born from a deep understanding of the unique demands of educational facilities.

    This unwavering commitment to excellence provides school leaders and facilities managers with the certified assurance and complete peace of mind they need. By guaranteeing the safety and integrity of their gas systems, we empower them to focus on what they do best: shaping the next generation.

  • Technician in a blue uniform writing on a tablet in an industrial setting with pipes and gauges in the background.

    CP17 Comprehensive Plant Room Gas Safety

    CP17 service offers a detailed safety inspection of specified appliances within your plant room. We verify safe operation, check ventilation, safety devices, and general integrity, ensuring full compliance with current gas safety regulations. This is a crucial annual requirement for businesses.ion goes here

  • A kitchen staff member wearing a blue uniform with 'cgsys' on the back is working at a stainless steel stove with two tablets in front of him, in a commercial kitchen with stainless steel shelves and appliances.

    CP42 Commercial Kitchens Gas Safety Check

    Specifically designed for high-demand commercial kitchens, our CP42 check covers all accessible gas appliances and associated pipework. We rigorously inspect ventilation, interlocks, emergency stop functionality, and appliance integrity, ensuring compliance with standards like BS6173:2009 and IGEM/UP/19 for ultimate kitchen safety.

  • A technician working on industrial pipeline equipment with yellow pipes and gauges in a factory setting.

    CP16 Visual Inspection & Pressure Testing

    Essential for new installations or significant modifications, our CP16 service provides a meticulous visual inspection and pressure tightness testing of your gas installation. We identify any leaks and ensure your system conforms to the Gas Safety (Installation and Use) Regulations 1998 (GSIUR), guaranteeing safety before operation.

  • A technician in safety gear working with industrial equipment and monitoring system data on a laptop in an industrial plant.

    CP15 Full Commercial Boiler Servicing

    Maintain peak performance and safety with our CP15 full servicing of commercial boilers. Following manufacturer instructions, we conduct thorough cleaning, combustion analysis, control checks, and ensure efficient operation. Regular servicing is key to extending boiler lifespan and complying with GSIUR 1998.

  • A young male student wearing safety goggles and a blue lab coat working with scientific instruments in a laboratory. In the background, several students and an instructor are engaged in experiments.

    School Laboratories

    The Mandatory Safety Check: Gas Pressure Proving

    The IGEM/UP/11 standard mandates that whenever an AIV is used, the system must perform a "downstream integrity check" before the gas can be turned on. This is a critical automated safety feature that prevents accidents.

    This check, performed by a gas pressure proving system, ensures no gas taps have been left open before the main valve opens. Here's how it works:Description goes here

  • Commercial kitchen with multiple stoves, ventilation hoods, and a gas control system panel with digital displays and buttons.

    Gas Safety in Food Technology Rooms

    Food technology areas present a unique gas safety challenge. Unlike a science lab with fixed benches or a commercial kitchen with a large extraction canopy, these rooms often feature multiple domestic-style gas cookers spread throughout the space. This makes it difficult to design a single, cost-effective ventilation system that efficiently removes both the products of combustion and cooking fumes from every appliance.

    UK safety standards acknowledge this difficulty and provide specific, technology-led solutions to ensure student and staff safety.

  • A woman and a man in an office, working with digital tablets and computers. The woman is standing, pointing at her tablet, while the man is seated at his desk, looking at his computer screen.

    Fully Paperless System

    All documentation, from service records to certificates, is sent instantly to your email as a clear PDF.

    Responsive & Accountable

    We outline clear processes for emergency/out-of-hours work and variations to work, ensuring flexibility and responsiveness while maintaining transparency and clear communication.

  • Two men inspecting digital service history displayed on a tablet in an industrial setting with machinery and pipes in the background.

    Complete Digital History

    We maintain a full service and repair history for your appliances, providing service reminders to keep you compliant.

  • A technician in blue uniform labeled 'CGSYS' working on plumbing and pump system, pouring liquid from a white bottle into a pipe valve in a mechanical room.

    Heating System Dosing & Maintenance

    Beyond standard servicing, we offer vital services like heating system inhibitor dosing to prevent corrosion and scale, ensuring optimal boiler efficiency and system longevity. Our comprehensive checks also cover expansion vessels and Pressure Relief Valves (PRVs), critical for system safety and performance.

  • Two technicians working on electrical and plumbing equipment in a utility room. One is adjusting pipes, the other working on an electrical panel. They are dressed in blue shirts with the logo 'CGYS' and have tools on the workbenches.

    Installation & Systems

    New Installations & System Upgrades

    Whether you require a new gas installation, a complete system upgrade, or specialized commercial interlock systems, our team delivers expert solutions tailored to your specific needs, ensuring optimal performance and compliance with all relevant standards.

  • Three groups of people engaged in gas safety training: two women discussing safety solutions, a woman testing gas safety equipment, and a man and woman discussing notes with notebooks in a well-lit industrial setting.

    Gas Safety for the Education Sector

    We provide expert, compliant gas safety solutions for schools and colleges, covering boiler rooms, catering kitchens, and science labs.

    Specialist Education Sector Solutions

    We provide compliant gas safety solutions specifically for the education sector, addressing the unique requirements of boiler rooms, catering kitchens, and science labs in schools and colleges, ensuring a safe learning environment.

  • A technician in a navy blue uniform with 'casys' logo kneeling on a stool working on industrial plumbing equipment with gauges, pipes, and a motor in a dimly lit room. Tools are on the floor nearby. A backlit sign displays logos of Vaillant, Worgester, Bosch, Buderus, and Ideal Concord.

    Breakdown & Repair

    We offer commercial boiler breakdown and repair services for all major brands. Our 24/7 emergency response minimises downtime for your business.

    We Specialise in All Major Boiler Brands

    Our highly experienced team can install, service, and repair boilers from leading manufacturers, including:

    Vaillant • Worcester Bosch • Buderus • Ideal Concord

  • Technician working on HVAC control systems in an industrial setting with pipes and control units labeled Vaillant.

    Specialist Installations

    Underfloor Heating Installation & Servicing

    Solar Hot Water System Repair

    Solar Hot Water & Panel Installation

    Hot Water System Repair

  • Technician working on equipment in a high-rise building with a city skyline view at sunset.

    Servicing & Compliance

    We provide routine central heating inspections and servicing to ensure your systems are efficient and compliant with all gas safety regulations.

    London-Wide Coverage

    We provide our full range of heating and plumbing services to residents and businesses throughout London.

  • Commercial Systems

    Commercial Heating Repairs

    Commercial Boiler Breakdown & Installation

    Commercial Gas Interlock Systems

    Gas Mechanic Services

    Emergency & Safety

    Emergency 24hr Boiler Installation

    Emergency Gas Leak Repairs

    Gas Safety Certificates (for Landlords & Commercial)

    Gas Safe Registered Engineers