Over the last decade Active have built a reputation throughout Scotland synonymous with excellence in the area of installation and maintenance of energy efficient air conditioning and ventilation systems. Active was founded in 1999 by Mr Ian Nicol, over the years the business has expanded and now employs 62 people with a fleet of 30 Mercedes mobile vans all dedicated to delivering the best service and products on the market today. Active act as the sole agents for some of the world's leading manufactures giving us a wide choice of systems and products to deliver in the solutions we build.www.active-aircon.co.ukBraehead Centre/Blackness Ave Altens Industrial Estate, AB12 3PG

HVAC & Refrigeration Engineering Ltd provides a comprehensive range of services to the Onshore, Offshore and Marine Industries worldwide. These include performance surveys, conceptual & detailed design, supply, installation, commissioning, maintenance & repair of Heating, Ventilation, Air conditioning (HVAC) & Refrigeration systems.www.hvac-refrigeration.co.ukUnit 12/Denmore Ind Est/Denmore Rd Bridge of Don, AB23 8JW

Extensive experience in the fields of refrigeration and air conditioning. Time served engineers install, service and maintain all types of industrial and commercial equipment. Engineers are registered with ACRIB, with City & Guilds Safe Handling of Refrigerant/Ammonia Certification. Winner Scottish Refrigeration Apprentice of the Year 2007. Installations have been carried out nationwide and worldwide including Europe, Russia, South America, South Africa and the Middle and Far East.www.refrigeration-aberdeen.comHillview Rd East Tullos Industrial Estate, AB12 3HB