Experts in air conditioning and refrigeration engineering

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.

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.

Putting you in control

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.

Fully equipped projects teams

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.

Recent projects include large chiller and air handling unit installations at:

• the Dorchester Hotel;
• Ladbrokes headquarters;
• North Middlesex Hospital.

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.

Reducing chiller running costs

Our recently launched Chiller Health Check service cuts energy costs and spots potential problems before they result in chiller breakdown.

The Chiller Health Check uses the latest thermal imaging systems coupled with a new award-winning performance analyser, called ClimaCheck.

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Compressor remanufacturing

Our state-of-the-art compressor remanufacturing facility includes the latest engineering and test equipment, to ensure remanufactured compressors are leak-free and leave the factory in “as new” conditions, under full warranty.

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Railway air conditioning maintenance

Our unique railway air conditioning refurbishment department provides a specialist service for the main carriers and the London underground.

We maintain a full history of all assets worked upon, which is accessible by our customers.

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The Calibre Services Group

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, Calibre Ventilation Ltd and Next Control Systems.

LH plc works closely with sister company Klima-Therm Ltd, and manages all of that company’s project work and maintenance.

Klima-Therm Ltd supplies a full range of high efficiency chillers (based on ammonia, propane and HFC), including the ultra-efficient award winning Turbomiser Chiller, based on the Turbocor compressor.

Klima-Therm also supplies a range of air handling units from Saiver and Novair, as well a complimentary fan coil units from Eurapo, and chilled beams from Cosy.

Calibre Ventilation Ltd specialises in the design, fabrication and installation of ventilation and extract systems. It is also a D1 Daikin Partner, supplying a complete range of packaged and split air conditioning systems.

Next Control Systems Ltd supplies advanced energy-saving controls systems to supermarkets, department stores, hotels, restaurants, offices and cold stores. It operates a 24/7 bureau to monitor and manage alarms on behalf of clients.

Tutela Systems supplies monitoring equipment to blood banks and other highly controlled environments, both in the UK and the US.