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With more than a quarter of a century of experience, LH plc is one of the UK’s leading air conditioning and refrigeration engineering companies. Our Wimbledon-based headquarters are ideally located to serve London, the Home Counties and the South of England, with teams of specialist engineers strategically located around the country to serve clients across the UK. Part of the award-winning Calibre Service Group, our clients include major companies and organisations, such as banks, universities, hospitals and government agencies. They entrust to us the maintenance of the vital cooling needed to keep their buildings and businesses running smoothly.

Our Railway Air Conditioning Division, our Compressor Services & Specialist Engineering Division are unrivalled in their ability to work together with a synergy that provides our customers with a true TurnKey solution… We are among the Top 50 companies listed as a “Best Trading Partner” in the 2009 Plimsoll Portfolio Analysis report on The UK Air Conditioning Equipment and Systems Industry.


Our professional service management team keeps track of clients’ maintenance schedules, to ensure reliable, trouble-free cooling. We also keep complete details of customer’s plant, equipment and spares, so that engineers attending site arrive equipped to deal with any problem – resulting in rapid solutions and minimal downtime.


Our project teams have their own mechanical engineering consultants and commissioning engineers, plus a specialist lifting team with full systems support to ensure projects are delivered safely, on time and to budget. The company is committed to the highest standards of design, installation and support. Our reputation for engineering and technical excellence has resulted in substantial growth in the business. We are BS-EN-ISO 9001:2000 approved.


LH plc is part of the Calibre Services Group, which specialises in HVACR engineering, service and maintenance, controls and related technologies. It includes Klima-Therm Ltd and GREE UK. LH plc works closely with sister company Klima-Therm Ltd, and manages all of that company’s project work and maintenance. Call us on 020 8971 4186 or email us here or contact us below. We look forward to working with you.