Barcol-Air (UK) Ltd. - Building services supplier and manufacturer of HVAC building management systems. Specialising in air distribution and control and comfort air conditioning systems. Sirocco-Air - Professional building services including heating, ventilation, plumbing, electrical, welding and cleaning. Specialists in air conditioning design and installation. Dewco Limited - Building services contractors. Design and installation engineers supplying plumbing, heating, air conditioning and ventilation systems. Livingston Mechanical Services Ltd - Heating, ventilation, plumbing and air conditioning contractors. The Solar Design Company - Supplier and installer of energy-efficient and environmentally-friendly heat and power systems. Western Air Ducts Ltd - Consultants, designers, manufacturers and installers of industrial dust and fume extraction systems. Emerald House Global Engineering Limited - Offer mechanical, electrical and cabled services installation and maintenance. Airtech Cooling Services Ltd - Liverpool based providers of commercial air conditioning design, installation and maintenance. Havills Maintenance Ltd - Torquay based building services engineers specialising in the design, installation and maintenance of electrical and mechanical systems.